[Bug tree-optimization/13962] [tree-ssa] make "fold" use alias information to optimize pointer comparisons
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13962 Richard Biener changed: What|Removed |Added CC||msebor at gcc dot gnu.org --- Comment #13 from Richard Biener --- *** Bug 78412 has been marked as a duplicate of this bug. ***
[Bug middle-end/78412] attribute malloc ineffective
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78412 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #1 from Richard Biener --- Well, see PR13962. It's not about malloc being ineffective but the optimization not being implemented. *** This bug has been marked as a duplicate of bug 13962 ***
[Bug other/55930] libatomic build failure if configured with --disable-dependency-tracking
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55930 Stephen Kitt changed: What|Removed |Added CC||steve at sk2 dot org --- Comment #4 from Stephen Kitt --- This is still relevant for version 6.2.0.
[Bug middle-end/78411] [7 Regression] FAIL: gcc.target/i386/pr45685.c scan-assembler-times cmov 6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78411 Richard Biener changed: What|Removed |Added Target||x86_64-*-*, i?86-*-* Status|UNCONFIRMED |NEW Keywords||missed-optimization Last reconfirmed||2016-11-18 CC||rguenth at gcc dot gnu.org, ||wschmidt at gcc dot gnu.org Blocks||77848 Ever confirmed|0 |1 Summary|FAIL: |[7 Regression] FAIL: |gcc.target/i386/pr45685.c |gcc.target/i386/pr45685.c |scan-assembler-times cmov 6 |scan-assembler-times cmov 6 Target Milestone|--- |7.0 --- Comment #1 from Richard Biener --- Ok, so this relied on tree loop if-conversion. Not sure if it really should though (tree loop if-conversion has no cost model). I'd rather have RTL if-conversion do the if-conversion if profitable. Otherwise the regression can be easily fixed by adding -ftree-loop-if-convert (though I'd recommend against this). Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77848 [Bug 77848] Gimple if-conversion results in redundant comparisons
[Bug middle-end/78409] Segfault in classify_object_over_fdes when throwing and exception
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78409 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2016-11-18 Ever confirmed|0 |1
[Bug lto/78407] [5/6/7 Regression] LTO breaks separate overriding of symbol aliases
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78407 Richard Biener changed: What|Removed |Added Keywords||wrong-code CC||hubicka at gcc dot gnu.org Target Milestone|--- |5.5 Summary|LTO breaks separate |[5/6/7 Regression] LTO |overriding of symbol|breaks separate overriding |aliases |of symbol aliases
[Bug tree-optimization/78413] [7 Regression] ICE in single_pred_edge, at basic-block.h:361
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78413 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 CC||rguenth at gcc dot gnu.org Target Milestone|--- |7.0 Ever confirmed|0 |1 --- Comment #3 from Richard Biener --- Confirmed. Even with simple latches loops may have more than one predecessor for their latches so we have to actually verify single_pred_p for the two latches we look at.
[Bug rtl-optimization/78400] [7 Regression] ICE: in df_refs_verify, at df-scan.c:4045 when building powerpc crosscompiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78400 Richard Biener changed: What|Removed |Added Target Milestone|--- |7.0
[Bug middle-end/78399] g++ generates sub-optimal assembler code when structs aren't explicitly aligned.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78399 Richard Biener changed: What|Removed |Added Target||x86_64-*-* Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 Ever confirmed|0 |1 --- Comment #3 from Richard Biener --- Confirmed. We're also expanding from pod copy_pod(pod) (struct pod d) { struct pod D.2314; ;; basic block 2, loop depth 0 ;;pred: ENTRY D.2314 = d; return D.2314; ;;succ: EXIT } which has one useless aggregate copy (somewhere we have a bug about not having aggregate copy propagation). The C++ FE emits < = TARGET_EXPR >>;
[Bug tree-optimization/78396] [7 regression] gcc.dg/vect/bb-slp-cond-1.c FAILs after fix for PR77848
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78396 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2016-11-18 Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- Mine, I'll have a look what we can do for GCC 7.
[Bug other/78410] gen-fac.c: undefined references
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78410 Andreas Schwab changed: What|Removed |Added Resolution|WORKSFORME |INVALID
[Bug rtl-optimization/71785] Computed gotos are mostly optimized away
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71785 --- Comment #7 from Segher Boessenkool --- Author: segher Date: Fri Nov 18 09:14:52 2016 New Revision: 242584 URL: https://gcc.gnu.org/viewcvs?rev=242584&root=gcc&view=rev Log: bb-reorder: Improve compgotos pass (PR71785) For code like the testcase in PR71785 GCC factors all the indirect branches to a single dispatcher that then everything jumps to. This is because having many indirect branches with each many jump targets does not scale in large parts of the compiler. Very late in the pass pipeline (right before peephole2) the indirect branches are then unfactored again, by the duplicate_computed_gotos pass. This pass works by replacing branches to such a common dispatcher by a copy of the dispatcher. For code like this testcase this does not work so well: most cases do a single addition instruction right before the dispatcher, but not all, and we end up with only two indirect jumps: the one without the addition, and the one with the addition in its own basic block, and now everything else jumps _there_. This patch rewrites the algorithm to deal with this. It also makes it simpler: it does not need the "candidates" array anymore, it does not need RTL layout mode, it does not need cleanup_cfg, and it does not need to keep track of what blocks it already visited. PR rtl-optimization/71785 * bb-reorder.c (maybe_duplicate_computed_goto): New function. (duplicate_computed_gotos): New function. (pass_duplicate_computed_gotos::execute): Rewrite. Modified: trunk/gcc/ChangeLog trunk/gcc/bb-reorder.c
[Bug rtl-optimization/78400] [7 Regression] ICE: in df_refs_verify, at df-scan.c:4045 when building powerpc crosscompiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78400 ktkachov at gcc dot gnu.org changed: What|Removed |Added CC||segher at gcc dot gnu.org --- Comment #1 from ktkachov at gcc dot gnu.org --- Looks like a separate shrink-wrapping issue
[Bug libquadmath/78414] New: libquamath converts (long double) INFINITY to NAN
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78414 Bug ID: 78414 Summary: libquamath converts (long double) INFINITY to NAN Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: libquadmath Assignee: unassigned at gcc dot gnu.org Reporter: walter.mascarenhas at gmail dot com Target Milestone: --- Created attachment 40078 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40078&action=edit a simple code showing the bug Libquadmath converts the INFINITY long double to a NAN __float128
[Bug libquadmath/78414] libquamath converts (long double) INFINITY to NAN
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78414 Uroš Bizjak changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #1 from Uroš Bizjak --- Dup. *** This bug has been marked as a duplicate of bug 77265 ***
[Bug libgcc/77265] Casting an extended precision long double "inf" to __float128 results in "nan"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77265 Uroš Bizjak changed: What|Removed |Added CC||walter.mascarenhas at gmail dot co ||m --- Comment #6 from Uroš Bizjak --- *** Bug 78414 has been marked as a duplicate of this bug. ***
[Bug libquadmath/78415] New: sqrtq does not round correctly when round mode is upward
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78415 Bug ID: 78415 Summary: sqrtq does not round correctly when round mode is upward Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: libquadmath Assignee: unassigned at gcc dot gnu.org Reporter: walter.mascarenhas at gmail dot com Target Milestone: --- // // The code below shows that sqrtq does not round // correctly when the rounding mode is upwards. // #include #include #include #include int main() { __float128 x = 1.0; x += 2.0 * FLT128_EPSILON; std::fesetround(FE_UPWARD); __float128 su = sqrtq(x); // the sqrt is rounded to 1 + 2 epsilon, whereas the least __float128 // above the mathematical sqrt(1 + 2 epsilon) is 1 + epsilon: // The Taylor series for sqrt around 1 yields // sqrt(1 + 2 epsilon) ~ 1 + epsilon - epsilon^2/2 < 1 + epsilon. assert(su == x); }
[Bug fortran/78395] [OOP] error on polymorphic assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78395 --- Comment #7 from vehre at gcc dot gnu.org --- (In reply to janus from comment #2) > (In reply to janus from comment #1) > > gfortran 6.2.0 says: > > > >v6 = 3 * v4%get_t2() ! This line is the one which causes ICE > > 1 > > Error: Assignment to an allocatable polymorphic variable at (1) is not yet > > supported > > It seems this error message was removed on trunk by Andre's r241439. Well, that error message was not only removed, but the feature reported missing was implemented. While doing so, I happened to find a piece of code dealing with typebound-procedures, that when removed did not cause any regression. I therefore assume, that it just was not tested in the testsuite and will have a look what I can do about it.
[Bug sanitizer/78267] [7 Regression] libsanitizer breaks bootstrap on x86_64-apple-darwin16 at r241977
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267 Rainer Orth changed: What|Removed |Added Target|x86_64-apple-darwin16 |x86_64-apple-darwin1[4-6] URL|https://gcc.gnu.org/ml/gcc- |https://gcc.gnu.org/ml/gcc- |patches/2016-11/msg01348.ht |patches/2016-11/msg01903.ht |ml |ml Host|x86_64-apple-darwin16 |x86_64-apple-darwin1[4-6] Build|x86_64-apple-darwin16 |x86_64-apple-darwin1[4-6] --- Comment #53 from Rainer Orth --- Just reposted the combined patch for reference.
[Bug middle-end/68360] GCC bitfield processing code is very inefficient
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68360 Roman Perepelitsa changed: What|Removed |Added CC||roman.perepelitsa at gmail dot com --- Comment #3 from Roman Perepelitsa --- Here's another example where GCC generates suboptimal code for bitfield initialization on x64: https://godbolt.org/g/WeqAr5. #include struct S { S(uint32_t a, uint32_t b); uint32_t a : 2; uint32_t b : 30; }; S::S(uint32_t a, uint32_t b) : a(a), b(b) {} Here's the code generated for the constructor when compiled with -O2. Clang 3.9: andl$3, %esi leal(%rsi,%rdx,4), %eax movl%eax, (%rdi) retq GCC 7.0: movl%esi, %eax movzbl (%rdi), %esi andl$3, %eax andl$-4, %esi orl %eax, %esi leal0(,%rdx,4), %eax movb%sil, (%rdi) movl(%rdi), %edx andl$3, %edx orl %eax, %edx movl%edx, (%rdi) ret
[Bug rtl-optimization/78416] New: wrong code for division by (u128)~INT64_MAX at -O0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78416 Bug ID: 78416 Summary: wrong code for division by (u128)~INT64_MAX at -O0 Product: gcc Version: 7.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Build: x86_64-pc-linux-gnu Created attachment 40079 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40079&action=edit reduced testcase Compiler output: $ gcc testcase.c $ ./a.out Aborted $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-242583-checking-yes-rtl-df-extra-nobootstrap-nographite-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --disable-bootstrap --without-cloog --without-ppl --without-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-242583-checking-yes-rtl-df-extra-nobootstrap-nographite-amd64 Thread model: posix gcc version 7.0.0 20161118 (experimental) (GCC) All tested 64bit targets seem to be affected: aarch64-unknown-linux-gnu powerpc64-unknown-linux-gnu sparc64-unknown-linux-gnu x86_64-pc-linux-gnu x86_64-pc-linux-gnux32 The .expand dump has: ;; x_2 = x_1 / 0x8000; (insn 6 5 7 (set (reg:TI 90) (mem/c:TI (plus:DI (reg/f:DI 82 virtual-stack-vars) (const_int -16 [0xfff0])) [1 xD.1797+0 S16 A128])) "testcase.c":7 -1 (nil)) (insn 7 6 8 (parallel [ (set (reg:TI 89) (lshiftrt:TI (reg:TI 90) (const_int 63 [0x3f]))) (clobber (reg:CC 17 flags)) ]) "testcase.c":7 -1 (expr_list:REG_EQUAL (udiv:TI (reg:TI 90) (const_int -9223372036854775808 [0x8000])) (nil))) Which, I think, is wrong. But I have been wrong many times already.
[Bug target/78417] New: target_clones default for powerpc64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78417 Bug ID: 78417 Summary: target_clones default for powerpc64 Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: tkoenig at gcc dot gnu.org Target Milestone: --- The following does not work as expected. Either default is an invalid target for target_clones, or it is missing. Bit of a Catch-22 there :-) The reason why I'm interested is PR 78379; I think PowerPC could also profit from processor-specific versions of matmul in the library. [tkoenig@gcc1-power7 ~]$ cat target.c static double foo_int(const double *restrict, const double *restrict, int) __attribute__ ((target_clones("cpu=power7,cpu=power8,default"))) ; double foo(const double *restrict a, const double *restrict b, int n) { return foo_int(a,b,n); } static double foo_int(const double *restrict a, const double *restrict b, int n) { double s; int i; s = 0.0; for (i=0; i
[Bug objc++/78418] New: [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78418 Bug ID: 78418 Summary: [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16 Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: objc++ Assignee: unassigned at gcc dot gnu.org Reporter: dominiq at lps dot ens.fr CC: iains at gcc dot gnu.org, jason at gcc dot gnu.org Target Milestone: --- Host: x86_64-apple-darwin16 Target: x86_64-apple-darwin16 Build: x86_64-apple-darwin16 Created attachment 40080 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40080&action=edit preprocessed file for torture/strings/const-str-10.mm Several failures appeared in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16. They are due to the following ICE [Book15] f90/bug% /opt/gcc/gcc7p-242377p4y/bin/g++ const-str-10.mii -c -fnext-runtime -mno-constant-cfstrings /opt/gcc/p_work/gcc/testsuite/obj-c++.dg/torture/strings/const-str-10.mm:31:34: internal compiler error: tree check: expected var_decl or parm_decl or result_decl, have const_decl in lvalue_kind, at cp/tree.c:145 const NSConstantString *appKey = @"MyApp"; ^
[Bug objc++/78418] [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78418 --- Comment #1 from Dominique d'Humieres --- Created attachment 40081 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40081&action=edit Results for the obj-c++ test suite after r242377
[Bug objc++/78418] [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78418 Iain Sandoe changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 Ever confirmed|0 |1
[Bug objc++/78418] [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78418 --- Comment #2 from Dominique d'Humieres --- Created attachment 40082 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40082&action=edit Reference results for the obj-c++ test suite before r242377 Note that due to pr63651 I am using the 10.9 SDK for the tests.
[Bug fortran/78392] ICE in gfc_trans_auto_array_allocation, at fortran/trans-array.c:5979
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78392 --- Comment #3 from janus at gcc dot gnu.org --- (In reply to janus from comment #2) > As an alternative to removing the assert, one could possibly prevent SAVEd > variables in the main PROGRAM from being declared as "static" (which might > also cure the performance regressions that Dominique reported for my patch > for PR 55207)? This could possibly be accomplished like this: Index: gcc/fortran/trans-decl.c === --- gcc/fortran/trans-decl.c(Revision 242584) +++ gcc/fortran/trans-decl.c(Arbeitskopie) @@ -635,7 +635,8 @@ gfc_finish_var_decl (tree decl, gfc_symbol * sym) initialized variables are SAVE_IMPLICIT and explicitly saved are SAVE_EXPLICIT. */ if (!sym->attr.use_assoc - && (sym->attr.save != SAVE_NONE || sym->attr.data + && ((sym->attr.save != SAVE_NONE && !sym->ns->proc_name->attr.is_main_program) + || sym->attr.data || (sym->value && sym->ns->proc_name->attr.is_main_program) || (flag_coarray == GFC_FCOARRAY_LIB && sym->attr.codimension && !sym->attr.allocatable))) That indeed removes the ICE on comment 0, however it causes loads of testsuite regressions, so it's certainly not a very good idea.
[Bug fortran/78392] ICE in gfc_trans_auto_array_allocation, at fortran/trans-array.c:5979
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78392 Dominique d'Humieres changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 Ever confirmed|0 |1 --- Comment #4 from Dominique d'Humieres --- Confirmed from 4.8 up to trunk (7.0).
[Bug objc++/78418] [7 Regression] Several failures in the obj-c++ test suite after revision r242377 on x86_64-apple-darwin16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78418 Iain Sandoe changed: What|Removed |Added Target|x86_64-apple-darwin16 |x86_64-apple-darwin* Host|x86_64-apple-darwin16 |x86_64-apple-darwin* Build|x86_64-apple-darwin16 |x86_64-apple-darwin* --- Comment #3 from Iain Sandoe --- (In reply to Dominique d'Humieres from comment #2) > Created attachment 40082 [details] > Reference results for the obj-c++ test suite before r242377 > > Note that due to pr63651 I am using the 10.9 SDK for the tests. It shows up regardless of the SDK in use, I haven't had a chance to analyse yet - but suspect this is a set of conditions that happens only to occur here.
[Bug other/78419] New: ICE with target_clone on invalid target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78419 Bug ID: 78419 Summary: ICE with target_clone on invalid target Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other Assignee: unassigned at gcc dot gnu.org Reporter: tkoenig at gcc dot gnu.org Target Milestone: --- ig25@linux-fd1f:~/Krempel/Target> cat t2.c static double foo_int(double *restrict, double *restrict, int) __attribute__ ((target_clones("avx,foo,avx2,avx512f,default"))) ; double foo(double *restrict a, double *restrict b, int n) { return foo_int(a,b,n); } double foo_int(double *restrict a, double *restrict b, int n) { double s; int i; s = 0.0; for (i=0; i gcc -S t2.c t2.c:20:1: error: attribute(target("foo")) is unknown } ^ t2.c:11:8: warning: attribute(target_clones("foo")) is not valid for current target double foo_int(double *restrict a, double *restrict b, int n) ^~~ *** Error in `/home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1': free(): invalid next size (fast): 0x0301ec60 *** === Backtrace: = /lib64/libc.so.6(+0x727df)[0x7f467a3e87df] /lib64/libc.so.6(+0x7804e)[0x7f467a3ee04e] /lib64/libc.so.6(+0x78d56)[0x7f467a3eed56] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1[0x135de19] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1[0x135e115] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1(_Z16execute_one_passP8opt_pass+0x12d)[0xafbffd] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1(_Z21execute_ipa_pass_listP8opt_pass+0x92)[0xafce12] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1[0x7db054] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1(_ZN12symbol_table25finalize_compilation_unitEv+0x157)[0x7dd817] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1[0xbcbe93] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1(_ZN6toplev4mainEiPPc+0x6ed)[0x63b57d] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1(main+0x27)[0x63d8d7] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f467a397b05] /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1[0x63dcc3] === Memory map: 0040-01ef6000 r-xp 08:04 2621565 /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1 020f6000-020fc000 r--p 01af6000 08:04 2621565 /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1 020fc000-02108000 rw-p 01afc000 08:04 2621565 /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1 02108000-02255000 rw-p 00:00 0 02ff7000-030f6000 rw-p 00:00 0 [heap] 7f4679f5e000-7f4679f74000 r-xp 08:04 795089 /home/ig25/lib64/libgcc_s.so.1 7f4679f74000-7f467a174000 ---p 00016000 08:04 795089 /home/ig25/lib64/libgcc_s.so.1 7f467a174000-7f467a175000 r--p 00016000 08:04 795089 /home/ig25/lib64/libgcc_s.so.1 7f467a175000-7f467a176000 rw-p 00017000 08:04 795089 /home/ig25/lib64/libgcc_s.so.1 7f467a176000-7f467a376000 rw-p 00:00 0 7f467a376000-7f467a517000 r-xp 08:04 794245 /lib64/libc-2.19.so 7f467a517000-7f467a716000 ---p 001a1000 08:04 794245 /lib64/libc-2.19.so 7f467a716000-7f467a71a000 r--p 001a 08:04 794245 /lib64/libc-2.19.so 7f467a71a000-7f467a71c000 rw-p 001a4000 08:04 794245 /lib64/libc-2.19.so 7f467a71c000-7f467a72 rw-p 00:00 0 7f467a72-7f467a82 r-xp 08:04 795125 /lib64/libm-2.19.so 7f467a82-7f467aa1f000 ---p 0010 08:04 795125 /lib64/libm-2.19.so 7f467aa1f000-7f467aa2 r--p 000ff000 08:04 795125 /lib64/libm-2.19.so 7f467aa2-7f467aa21000 rw-p 0010 08:04 795125 /lib64/libm-2.19.so 7f467aa21000-7f467aa24000 r-xp 08:04 795122 /lib64/libdl-2.19.so 7f467aa24000-7f467ac23000 ---p 3000 08:04 795122 /lib64/libdl-2.19.so 7f467ac23000-7f467ac24000 r--p 2000 08:04 795122 /lib64/libdl-2.19.so 7f467ac24000-7f467ac25000 rw-p 3000 08:04 795122 /lib64/libdl-2.19.so 7f467ac25000-7f467ac45000 r-xp 08:04 788292 /lib64/ld-2.19.so 7f467ade9000-7f467aded000 rw-p 00:00 0 7f467ae09000-7f467ae45000 rw-p 00:00 0 7f467ae45000-7f467ae46000 r--p 0002 08:04 788292 /lib64/ld-2.19.so 7f467ae46000-7f467ae47000 rw-p 00021000 08:04 788292 /lib64/ld-2.19.so 7f467ae47000-7f467ae48000 rw-p 00:00 0 7fff214e2000-7fff21504000 rw-p 00:00 0 [stack] 7fff215fc000-7fff215fe000 r-xp 00:00 0 [vdso] 7fff215fe000-7fff2160 r--p 00:00 0 [vvar] ff60-ff601000 r-xp 00:00 0
[Bug fortran/78398] missing warnings and inconsistencies with -Wuninitialized
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78398 Dominique d'Humieres changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 Ever confirmed|0 |1 --- Comment #2 from Dominique d'Humieres --- Confirmed from 5 up to trunk (7.0). Note that I don't get any warning with 4.8 and 4.9. > This may be related to PR 34721. Certainly for the missing warnings for 'print *,i'.
[Bug other/78419] ICE with target_clone on invalid target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78419 --- Comment #1 from Thomas Koenig --- Valgrind has some more info: ig25@linux-fd1f:~/Krempel/Target> valgrind /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1 t2.c ==23596== Memcheck, a memory error detector ==23596== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al. ==23596== Using Valgrind-3.10.0 and LibVEX; rerun with -h for copyright info ==23596== Command: /home/ig25/lib/gcc/x86_64-pc-linux-gnu/7.0.0/cc1 t2.c ==23596== foo foo_int Analyzing compilation unit Performing interprocedural optimizations <*free_lang_data> ==23596== Invalid write of size 8 ==23596==at 0x135DAB5: separate_attrs (multiple_target.c:165) ==23596==by 0x135DAB5: expand_target_clones(cgraph_node*, bool) (multiple_target.c:264) ==23596==by 0x135E114: ipa_target_clone (multiple_target.c:351) ==23596==by 0x135E114: (anonymous namespace)::pass_target_clone::execute(function*) (multiple_target.c:379) ==23596==by 0xAFBFFC: execute_one_pass(opt_pass*) (passes.c:2370) ==23596==by 0xAFCE11: execute_ipa_pass_list(opt_pass*) (passes.c:2805) ==23596==by 0x7DB053: ipa_passes (cgraphunit.c:2339) ==23596==by 0x7DB053: symbol_table::compile() [clone .part.47] (cgraphunit.c:2425) ==23596==by 0x7DD816: compile (cgraphunit.c:2587) ==23596==by 0x7DD816: symbol_table::finalize_compilation_unit() (cgraphunit.c:2584) ==23596==by 0xBCBE92: compile_file() (toplev.c:493) ==23596==by 0x63B57C: do_compile (toplev.c:2012) ==23596==by 0x63B57C: toplev::main(int, char**) (toplev.c:2146) ==23596==by 0x63D8D6: main (main.c:39) ==23596== Address 0x59cc258 is 0 bytes after a block of size 8 alloc'd ==23596==at 0x4C29110: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==23596==by 0x1432B67: xmalloc (xmalloc.c:148) ==23596==by 0x135DA7D: expand_target_clones(cgraph_node*, bool) (multiple_target.c:262) ==23596==by 0x135E114: ipa_target_clone (multiple_target.c:351) ==23596==by 0x135E114: (anonymous namespace)::pass_target_clone::execute(function*) (multiple_target.c:379) ==23596==by 0xAFBFFC: execute_one_pass(opt_pass*) (passes.c:2370) ==23596==by 0xAFCE11: execute_ipa_pass_list(opt_pass*) (passes.c:2805) ==23596==by 0x7DB053: ipa_passes (cgraphunit.c:2339) ==23596==by 0x7DB053: symbol_table::compile() [clone .part.47] (cgraphunit.c:2425) ==23596==by 0x7DD816: compile (cgraphunit.c:2587) ==23596==by 0x7DD816: symbol_table::finalize_compilation_unit() (cgraphunit.c:2584) ==23596==by 0xBCBE92: compile_file() (toplev.c:493) ==23596==by 0x63B57C: do_compile (toplev.c:2012) ==23596==by 0x63B57C: toplev::main(int, char**) (toplev.c:2146) ==23596==by 0x63D8D6: main (main.c:39) ==23596== ==23596== Invalid read of size 8 ==23596==at 0x135DB40: expand_target_clones(cgraph_node*, bool) (multiple_target.c:284) ==23596==by 0x135E114: ipa_target_clone (multiple_target.c:351) ==23596==by 0x135E114: (anonymous namespace)::pass_target_clone::execute(function*) (multiple_target.c:379) ==23596==by 0xAFBFFC: execute_one_pass(opt_pass*) (passes.c:2370) ==23596==by 0xAFCE11: execute_ipa_pass_list(opt_pass*) (passes.c:2805) ==23596==by 0x7DB053: ipa_passes (cgraphunit.c:2339) ==23596==by 0x7DB053: symbol_table::compile() [clone .part.47] (cgraphunit.c:2425) ==23596==by 0x7DD816: compile (cgraphunit.c:2587) ==23596==by 0x7DD816: symbol_table::finalize_compilation_unit() (cgraphunit.c:2584) ==23596==by 0xBCBE92: compile_file() (toplev.c:493) ==23596==by 0x63B57C: do_compile (toplev.c:2012) ==23596==by 0x63B57C: toplev::main(int, char**) (toplev.c:2146) ==23596==by 0x63D8D6: main (main.c:39) ==23596== Address 0x59cc258 is 0 bytes after a block of size 8 alloc'd ==23596==at 0x4C29110: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==23596==by 0x1432B67: xmalloc (xmalloc.c:148) ==23596==by 0x135DA7D: expand_target_clones(cgraph_node*, bool) (multiple_target.c:262) ==23596==by 0x135E114: ipa_target_clone (multiple_target.c:351) ==23596==by 0x135E114: (anonymous namespace)::pass_target_clone::execute(function*) (multiple_target.c:379) ==23596==by 0xAFBFFC: execute_one_pass(opt_pass*) (passes.c:2370) ==23596==by 0xAFCE11: execute_ipa_pass_list(opt_pass*) (passes.c:2805) ==23596==by 0x7DB053: ipa_passes (cgraphunit.c:2339) ==23596==by 0x7DB053: symbol_table::compile() [clone .part.47] (cgraphunit.c:2425) ==23596==by 0x7DD816: compile (cgraphunit.c:2587) ==23596==by 0x7DD816: symbol_table::finalize_compilation_unit() (cgraphunit.c:2584) ==23596==by 0xBCBE92: compile_file() (toplev.c:493) ==23596==by 0x63B57C: do_compile (toplev.c:2012) ==23596==by 0x63B57C: toplev::main(int, char**) (toplev.c:2146) ==23596==by 0x63D8D6: main (main.c:39) ==23596== t2.c:20:1: error: attribute(target("foo")) is unknown } ^ t2.c:11:8: warning: attribute(target_clones("foo")) is no
[Bug c/78352] GCC lacks support for the Apple "blocks" extension to the C family of languages
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78352 Iain Sandoe changed: What|Removed |Added Target||*darwin* Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 CC||iains at gcc dot gnu.org Host||*darwin* Assignee|unassigned at gcc dot gnu.org |iains at gcc dot gnu.org Ever confirmed|0 |1 Build||*darwin* --- Comment #1 from Iain Sandoe --- Just to add one note, which is that Apple's gcc-4.2.1 implementation for blocks was not actually submitted (and therefore doesn't exist on an FSF server); it's my understanding that means we cannot use / forward port it. I'm working on a new version - based on trying to match what clang's current code-gen produces.
[Bug other/78419] ICE with target_clone on invalid target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78419 Jakub Jelinek changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 CC||jakub at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #2 from Jakub Jelinek --- You don't need an invalid target name to trigger it, if you just remove the foo, part, it will still trigger it.
[Bug fortran/78392] ICE in gfc_trans_auto_array_allocation, at fortran/trans-array.c:5979
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78392 janus at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
[Bug c++/78420] New: std::less is not an total order with optimization enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 Bug ID: 78420 Summary: std::less is not an total order with optimization enabled Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: tomaszkam at gmail dot com Target Milestone: --- The 20.14.6 [comparisons] p14: For templates greater, less, greater_equal, and less_equal, the specializations for any pointer type yield a total order, even if the built-in operators <, >, <= , >= do not. Requires that the less is an total order, which means that the one of the following is true for every pair of pointer values a,b: 1) lt(a, b) 2) lt(b, a) 3) !lt(a,b) && !lt(b, a) //i.e. a == b, where equality is generated from lessw where lt is object on less. This does not hold for following code snippet when compared with O2: #include int b[8]; int a[8]; int main() { auto p = a + 8; std::less lt; std::cout << p << ' ' << b << ' ' << lt(p, b) << ' ' << lt(b, p) << ' ' << (!lt(p, b) && !lt(b, p)) << std::endl; } The output is: 0x6015c0 0x6015c0 0 0 0 (link to live example, require optimization to be enabled: http://melpon.org/wandbox/permlink/vyY82MsxrxWNyOOJ#).
[Bug testsuite/78421] New: vect-strided-a-u8-i2-gap.c fails on armeb
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78421 Bug ID: 78421 Summary: vect-strided-a-u8-i2-gap.c fails on armeb Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: testsuite Assignee: unassigned at gcc dot gnu.org Reporter: clyon at gcc dot gnu.org Target Milestone: --- Target: armeb Since r241991, gcc.dg/vect/vect-strided-a-u8-i2-gap.c fails on armeb: gcc.dg/vect/vect-strided-a-u8-i2-gap.c -flto -ffat-lto-objects scan-tree-dump-times vect "vectorized 2 loops" 1 gcc.dg/vect/vect-strided-a-u8-i2-gap.c scan-tree-dump-times vect "vectorized 2 loops" 1 This was discussed in the thread starting at: https://gcc.gnu.org/ml/gcc-patches/2016-11/msg00550.html
[Bug c++/78420] std::less is not an total order with optimization enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 --- Comment #1 from Tomasz Kamiński --- This is probably effect on changing !lt(a,b) && !lt(b, a) into !(a
[Bug middle-end/78419] ICE with target_clone on invalid target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78419 Jakub Jelinek changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org --- Comment #3 from Jakub Jelinek --- Created attachment 40083 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40083&action=edit gcc7-pr78419.patch Untested fix.
[Bug fortran/78395] [OOP] error on polymorphic assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78395 vehre at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |vehre at gcc dot gnu.org --- Comment #8 from vehre at gcc dot gnu.org --- (In reply to janus from comment #3) > Somewhat reduced test case (without all the abstract stuff): > program minimal > use types_mod > implicit none > > class(t1), allocatable :: v4 > class(t2), allocatable :: v6 > > allocate(v4, source=t1(4)) ! Also fails if I use `allocate(t1 :: v4)` allocate(v6) ! is missing here, right ??!!?? > v6 = 3 * v4%get_t2() ! This line is the one which causes ICE > > end Patch in regtesting.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #15 from Michael Matz --- (In reply to Dominik Vogt from comment #14) > With the fix I couldn't reproduce the error message in four attempts, but > genattrtab still hangs. Maybe this is bad luck, but maybe the error is > gone. Running a regression test without bootstrapping on s390x, > --with-arch=zEC12, --languages=c, there is a long list of tests that fail: > > Running target unix/-m64 > +FAIL: gcc.c-torture/execute/20030408-1.c -O1 execution test Okay, I can reproduce this now. Looking...
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #16 from Michael Matz --- Uhh: Successfully matched this instruction: (set (subreg:DI (reg:SI 73) 0) -(lshiftrt:DI (reg/v:DI 63 [ X ]) -(const_int 56 [0x38]))) +(zero_extract:DI (reg/v:DI 63 [ X ]) +(const_int 32 [0x20]) +(const_int -24 [0xffe8]))) allowing combination of insns 22 and 23 original costs 4 + 4 = 8 replacement cost 4 deferring deletion of insn with uid = 22. -modifying insn i323: r73:SI#0=r63:DI 0>>0x38 +modifying insn i323: r73:SI#0=zero_extract(r63:DI,0x20,0xffe8) Note the "-24" for the position of the extract!
[Bug tree-optimization/78413] [7 Regression] ICE in single_pred_edge, at basic-block.h:361
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78413 Bill Schmidt changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |wschmidt at gcc dot gnu.org --- Comment #4 from Bill Schmidt --- Mine, will fix today. Thanks for the report!
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #17 from Segher Boessenkool --- Combine should probably not try to generate this extract, I wonder if it can exist on any target. So where is it coming from? Of course the target should not "successfully" match it ;-)
[Bug fortran/51652] Allocate with type-spec and source-expr: check whether length type-parameter is the same is lacking
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51652 --- Comment #8 from Dominique d'Humieres --- AFAICT this PR is mostly fixed since gcc-5. However I see a remaining glitch with the following variant of the original test module settings type keyword ! character(60), allocatable :: c(:) ! works but should it? ! character(80), allocatable :: c(:) ! works character(:), allocatable :: c(:) end type keyword type(keyword) :: kw(10) contains subroutine save_kw !allocate(kw(1)%c(10)) allocate(character(80) :: kw(1)%c(10)) kw(1)%c(1) = 'abcd' print *, "'", kw(1)%c(1), "'" if (trim(kw(1)%c(1)).eq.'abcd') then ! problem here print *, 'yes' else print *, 'no' endif end subroutine save_kw end module settings !* program ice use settings call save_kw end program ice which prints 'abcd ' yes at run time, i.e., the second quote is missing.
[Bug testsuite/78421] [7 Regression] vect-strided-a-u8-i2-gap.c fails on armeb
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78421 Richard Biener changed: What|Removed |Added CC||rguenth at gcc dot gnu.org Target Milestone|--- |7.0 Summary|vect-strided-a-u8-i2-gap.c |[7 Regression] |fails on armeb |vect-strided-a-u8-i2-gap.c ||fails on armeb
[Bug fortran/71723] [5/6/7 Regression] [F08] ICE on invalid pointer initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723 --- Comment #5 from janus at gcc dot gnu.org --- (In reply to Walter Spector from comment #0) > > type(data_t), pointer :: data > integer, pointer :: idata => data%i Thinking about it some more, I'm actually not sure why this should be illegal. It's certainly true that 'data' itself does not have the TARGET attribute. But the thing that 'data' points to (whatever it is) certainly must be a TARGET, otherwise 'data' couldn't point to it, right? [Side note: There is actually a runtime problem with your test case, since 'data' is not associated. But we probably don't need to detect this at compile time.] To clarify my point, let me give you an expanded example, which I think is valid and runs nicely with gfortran: program p implicit none type data_t integer :: i = 9 end type type(data_t), target :: d type(data_t), pointer :: dp integer, pointer :: ip dp => d ip => d%i ! certainly legal ip => dp%i ! also legal!?! print *,ip end If you agree that this is valid, the original code in comment 0 should also be valid, I think.
[Bug bootstrap/77359] [7 Regression] AIX bootstrap failure due to alignment of stack pointer + STACK_DYNAMIC_OFFSET
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77359 --- Comment #22 from Andreas Krebbel --- Author: krebbel Date: Fri Nov 18 14:28:49 2016 New Revision: 242589 URL: https://gcc.gnu.org/viewcvs?rev=242589&root=gcc&view=rev Log: RS6000: Fix PR 77359: Properly align local variables in functions calling alloca. gcc/ChangeLog: 2016-11-18 Dominik Vogt * config/rs6000/rs6000.c (rs6000_stack_info): PR/77359: Properly align local variables in functions calling alloca. Also update the ASCII drawings * config/rs6000/rs6000.h (STARTING_FRAME_OFFSET, STACK_DYNAMIC_OFFSET): PR/77359: Likewise. * config/rs6000/aix.h (STARTING_FRAME_OFFSET, STACK_DYNAMIC_OFFSET): PR/77359: Copy AIX specific versions of the rs6000.h macros to aix.h. Modified: trunk/gcc/ChangeLog trunk/gcc/config/rs6000/aix.h trunk/gcc/config/rs6000/rs6000.c trunk/gcc/config/rs6000/rs6000.h
[Bug sanitizer/78307] [7 Regression] missing symbols in libubsan without changing the soname
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78307 --- Comment #9 from Maxim Ostapenko --- Can we close this?
[Bug sanitizer/78307] [7 Regression] missing symbols in libubsan without changing the soname
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78307 Jakub Jelinek changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #10 from Jakub Jelinek --- I think so.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #18 from Michael Matz --- (In reply to Segher Boessenkool from comment #17) > Combine should probably not try to generate this extract, I wonder if it > can exist on any target. So where is it coming from? Easy: (subreg:SI (lshiftrt:DI (reg/v:DI 63 [ X ]) (const_int 56 [0x38])) 4) On s390x this is a lowpart subreg. This is now rewritten as extraction with pos==56 and len==32 (as the wanted mode is SImode). Note that 56+32 is larger than 64, i.e. outside the mode of the argument (DImode). But that's supposed to be okay with make_extraction, especially if the arg is !MEM_P. There even an explicit mention of this in make_extraction: if (BITS_BIT_ENDIAN) {... /* POS may be less than 0 now, but we check for that below. Note that it can only be less than 0 if !MEM_P (inner). */ } Of course, pos here indeed is < 0 (it's -24). But I see no sensible checking of it for being less than zero. There are some that were probably intended to check this but they are guarded such that they don't work in this case: else if (!MEM_P (inner)) ... if (GET_MODE (inner) != wanted_inner_mode && (pos_rtx != 0 || orig_pos + len > GET_MODE_BITSIZE (wanted_inner_mode))) return NULL_RTX; The above would trigger, except that GET_MODE(inner) == wanted_inner_mode. Now there are multiple ways to deal with this: 1) don't call make_extraction with pos+len>GET_MODE_PRECISION(inner) 2) Bail out in make_extraction more often, as the comment above claims I think I'll try (1) first as it's going to generate more extracts. > Of course the target should not "successfully" match it ;-) True, but OTOH no target should probably match negative positions at which points it seems more appropriate to not even ask the target to reject such :)
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #19 from Dominik Vogt --- (In reply to Segher Boessenkool from comment #17) > Combine should probably not try to generate this extract, I wonder if it > can exist on any target. So where is it coming from? > > Of course the target should not "successfully" match it ;-) There is a discussion going on about this issue: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77822 I'm working on an s390[x] patch to reject such combinations, but the middleend should probably not generate this in the first place.
[Bug bootstrap/77359] [7 Regression] AIX bootstrap failure due to alignment of stack pointer + STACK_DYNAMIC_OFFSET
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77359 --- Comment #23 from Andreas Krebbel --- Author: krebbel Date: Fri Nov 18 14:44:54 2016 New Revision: 242590 URL: https://gcc.gnu.org/viewcvs?rev=242590&root=gcc&view=rev Log: Re-apply: Drop excess size used for run time allocated stack variables. The patch got reverted after hitting PR77359 which turned out to be a rs6000 backend problem. Reapplying after the PR got fixed. gcc/ChangeLog: 2016-11-18 Dominik Vogt Re-apply after PR bootstrap/77359 is fixed: 2016-08-23 Dominik Vogt * explow.c (get_dynamic_stack_size): Take known alignment of stack pointer + STACK_DYNAMIC_OFFSET into account when calculating the size needed. --This line, and those below, will be ignored-- Mgcc/ChangeLog Mgcc/explow.c Modified: trunk/gcc/ChangeLog trunk/gcc/explow.c
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #20 from Michael Matz --- The below patch fixes at least the gcc.c-torture/execute/20030408-1.c testcase. Checking others as well, perhaps I manage to bootstrap later. But if Dominik is faster... :) diff --git a/gcc/combine.c b/gcc/combine.c index 0210685..d1b8557 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -8108,9 +8108,16 @@ make_compound_operation (rtx x, enum rtx_code in_code) && GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (inner)) && subreg_lowpart_p (x)) { + int len = mode_width; new_rtx = make_compound_operation (XEXP (inner, 0), next_code); + /* Don't extract bits outside the underlying mode. */ + if (CONST_INT_P (XEXP (inner, 1)) + && (INTVAL (XEXP (inner, 1)) + len + > GET_MODE_PRECISION (GET_MODE (inner + len = GET_MODE_PRECISION (GET_MODE (inner)) + - INTVAL (XEXP (inner, 1)); new_rtx = make_extraction (mode, new_rtx, 0, XEXP (inner, 1), - mode_width, 1, 0, in_code == COMPARE); + len, 1, 0, in_code == COMPARE); break; }
[Bug rtl-optimization/78400] [7 Regression] ICE: in df_refs_verify, at df-scan.c:4045 when building powerpc crosscompiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78400 Segher Boessenkool changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-11-18 Ever confirmed|0 |1
[Bug c++/78420] std::less is not a total order with -O2 enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 Jason Merrill changed: What|Removed |Added CC||jason at gcc dot gnu.org --- Comment #2 from Jason Merrill --- (In reply to Tomasz Kamiński from comment #1) > This is probably effect on changing !lt(a,b) && !lt(b, a) into !(a !(b to 5.10 [expr.eq] p2.1: > If at least one of the operands is a pointer, pointer conversions (4.11), > function pointer conversions (4.13), and qualification conversions (4.5) are > performed on both operands to bring them to their composite pointer > type (Clause 5). Comparing pointers is defined as follows: > — (2.1) If one pointer represents the address of a complete object, and > another pointer represents the address one past the last element of a > different complete object, the result of the comparison is unspecified. > > However I believe that in light of 20.14.6 [comparisons] p14, above > transformation is not allowed. I don't see this as prohibiting the transformation. The standard seems to be saying that they might or might not compare as equal, which presumably depends on how variables are laid out in memory. The optimization seems wrong to me.
[Bug c++/67631] brace initialization bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67631 Jason Merrill changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
[Bug c++/78420] std::less is not a total order with -O2 enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 --- Comment #3 from Tomasz Kamiński --- > I don't see this as prohibiting the transformation. The standard seems to be > saying that they might or might not compare as equal, which presumably > depends on how variables are laid out in memory. The optimization seems > wrong to me. But, the code snippet is not using == on this pointer, but std::less specialization that is required to form total order, but in the attached scenario as not because for p and b nor of following hold: 1) r(p, b) 2) r(b, p) 3) b is same as p (!r(p, b) && !r(b, p)) Which proves that r is not an total order. So the guarantee on the less is no longer provided.
[Bug c++/78420] std::less is not a total order with -O2 enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 --- Comment #4 from Tomasz Kamiński --- Oh, you mean that compiler is not allowed to turn comparison of p == b into false at compile time, using 5.10 [expr.eq] p2.1? Some reference from clang: https://llvm.org/bugs/show_bug.cgi?id=13507. Note that I am unable to reproduce problem on clang.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #21 from Dominik Vogt --- (In reply to Michael Matz from comment #16) > Uhh: > > Successfully matched this instruction: > (set (subreg:DI (reg:SI 73) 0) > -(lshiftrt:DI (reg/v:DI 63 [ X ]) > -(const_int 56 [0x38]))) > +(zero_extract:DI (reg/v:DI 63 [ X ]) > +(const_int 32 [0x20]) > +(const_int -24 [0xffe8]))) Why does it do this, shouldn't be this just "(zero_extract (reg) (8) (0))"? Zero extending that to 32 or 64 bits is built into "zero_extract", it's not necessary to code it into SIZE and POS.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #22 from Dominik Vogt --- Does this patch replace the one in comment 8 or should they both be used?
[Bug preprocessor/78324] Valgrind issues seen with gcc.dg/tree-ssa/builtin-sprintf-2.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78324 --- Comment #3 from David Malcolm --- Candidate patch: https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01942.html
[Bug rtl-optimization/78422] New: FAIL: gcc.c-torture/execute/cbrt.c execution failure
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78422 Bug ID: 78422 Summary: FAIL: gcc.c-torture/execute/cbrt.c execution failure Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: amker at gcc dot gnu.org Target Milestone: --- Hi, According to https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01637.html, the patch causes below failures on aarch64: FAIL: gcc.c-torture/execute/cbrt.c -O1 execution test FAIL: gcc.c-torture/execute/cbrt.c -O2 execution test FAIL: gcc.c-torture/execute/cbrt.c -O2 -flto -fno-use-linker-plugin -flto-partition=none execution test FAIL: gcc.c-torture/execute/cbrt.c -O3 -g execution test Thanks
[Bug preprocessor/78324] Valgrind issues seen with gcc.dg/tree-ssa/builtin-sprintf-2.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78324 amker at gcc dot gnu.org changed: What|Removed |Added Target||arm-none-eabi CC||amker at gcc dot gnu.org --- Comment #4 from amker at gcc dot gnu.org --- There is an ICE for this test on arm. Thanks.
[Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78314 --- Comment #4 from Dominique d'Humieres --- Any plan to back-port the fix? If no, could you please close the PR?
[Bug middle-end/78416] wrong code for division by (u128)~INT64_MAX at -O0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78416 Jakub Jelinek changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2016-11-18 Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Jakub Jelinek --- Created attachment 40084 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40084&action=edit gcc7-pr78416.patch Untested fix.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #23 from Michael Matz --- (In reply to Dominik Vogt from comment #22) > Does this patch replace the one in comment 8 or should they both be used? I checked it in isolation, but the former one does fix a bug as well, so probably use both.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #24 from Andreas Schwab --- This also fixes bootstrap on ia64.
[Bug tree-optimization/78413] [7 Regression] ICE in single_pred_edge, at basic-block.h:361
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78413 --- Comment #5 from Bill Schmidt --- Patch submitted here: https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01951.html
[Bug libfortran/78379] Processor-specific versions for matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78379 --- Comment #9 from Thomas Koenig --- Next question - what happens if you add -mvzeroupper -mavx to the line in the Makefile? Does that make a difference in speed?
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #25 from Dominik Vogt --- A quick regression test with both patches; s390x with just -m64 and -languages=c has only two failures left: +FAIL: gcc.target/s390/risbg-ll-1.c scan-assembler f43:\\n\\trisbg\\t%r2,%r2,32,128+61,64-12 +FAIL: gcc.target/s390/risbg-ll-2.c scan-assembler f9:\\n\\trisbg\\t%r3,%r2,48,63,64-48 This is probably not a bug in the patch, its just that the patterns for the RISBG instruction are very sensitive to any change in rtl. Maybe you'd like to have a quick look aat those two tests to verify they are not cause by an obivous bug. If that's not the case I can take over fixing them - I'm working on related patterns anyway, and they're awful to understand.
[Bug bootstrap/78390] [7 Regression] Bootstrap failure: match.pd: cannot determine type of operand
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78390 --- Comment #26 from Andreas Schwab --- Note that the patch in comment 8 is already included in r242526.
[Bug fortran/71723] [5/6/7 Regression] [F08] ICE on invalid pointer initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723 --- Comment #6 from Walter Spector --- Hi Janus, Your test case in Comment #5 is fine - because it is not attempting to initialize the pointer at compile time. Initializing a pointer at compile time is a F2008 feature. I was testing this F2008 feature when I encountered the ICE which prompted this bug report. If I feed my original test case into ifort (v17), I get: /tmp/wws> ifort ptr2.f90 ptr2.f90(10): error #8813: The target must have the TARGET attribute. [DATA] integer, pointer :: idata => data%i ---^ compilation aborted for ptr2.f90 (code 1) /tmp/wws>
[Bug fortran/68717] [6/7 Regression] New (bogus?) warnings when compiling some gfortran.dg tests with -flto after r231239
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68717 --- Comment #6 from Dominique d'Humieres --- Is this PR (and pr68649) related to pr33097, pr40976, pr42122, and/or pr44471?
[Bug c/78408] C loop initial declarations generate wrong code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78408 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #9 from Jakub Jelinek --- Note in the testcase a = (struct buf) {}, b = (struct buf) {} generates significantly more efficient code than a = b = (struct buf) {} - the former is 2x memset, the latter 1x memset + 1x memcpy. So, shall we for large aggregates gimplify those differently as an optimization?
[Bug fortran/71723] [5/6/7 Regression] [F08] ICE on invalid pointer initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723 --- Comment #7 from janus at gcc dot gnu.org --- (In reply to Walter Spector from comment #6) > Your test case in Comment #5 is fine - because it is not attempting to > initialize the pointer at compile time. Initializing a pointer at compile > time is a F2008 feature. I know. But in the end it's just a pointer assignment as well. Why should the rules be so much different? Can you possibly point me to the relevant place in the F08 standard, which allows comment #5, but forbids comment #0? > If I feed my original test case into ifort (v17), I get: > > /tmp/wws> ifort ptr2.f90 > ptr2.f90(10): error #8813: The target must have the TARGET attribute. > [DATA] > integer, pointer :: idata => data%i > ---^ Well, ok. But just because ifort rejects it, it doesn't necessarily mean that it's valid ;) What does ifort say on the example in comment #5? And what about this example, which is again similar to your original case: program p implicit none type data_t integer :: i = 9 end type type(data_t), target :: d type(data_t), pointer :: dp => d ! integer, pointer :: ip => d%i ! certainly legal integer, pointer :: ip => dp%i ! also legal!?! print *,ip end gfortran again throws an ICE on this, but if I instead use the commented-out line, it works fine.
[Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78314 --- Comment #5 from nsz at gcc dot gnu.org --- i plan to backport the fix, but it seems my fix is not correct and broke the ieee_8.fp90 test.
[Bug libfortran/78379] Processor-specific versions for matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78379 --- Comment #10 from Jerry DeLisle --- (In reply to Thomas Koenig from comment #9) > Next question - what happens if you add > > -mvzeroupper -mavx > > to the line in the Makefile? Does that make a difference in speed? -mvzeroupper slows all way down with or without -mprefer-avx128
[Bug rtl-optimization/78422] FAIL: gcc.c-torture/execute/cbrt.c execution failure
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78422 Andreas Schwab changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #1 from Andreas Schwab --- Fixed by r242526.
[Bug libfortran/78379] Processor-specific versions for matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78379 --- Comment #11 from Jerry DeLisle --- One could consider running a reference matrix multiply of size 32 in a loop and do timing tests to determine whether to use -mprefer-avx128. 0n this machine from comment 8 mavx = 1.276 mavx mprefer-avx128 = 3.460 There is some margin there for a fairly good test. Or is there another way to tell?
[Bug target/25112] [m68k] Suboptimal equality comparisons with small integers
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25112 Jeffrey A. Law changed: What|Removed |Added CC||law at redhat dot com --- Comment #2 from Jeffrey A. Law --- Note that due to the 2-address nature of the m68k, this transformation is only valid when both registers die. We need the register holding the immediate to die because the register will no longer be holding that immediate. We need the register we're comparing against the immediate to die because we're going to change its value. Finally the register we're comparing against the immediate must be a data register otherwise addq/subq will not set the condition codes. It essentially needs to be a 3 insn -> 3 insn peephole2. The key realization is that we're going to depend on test elimination in final to eliminate the comparison. The peep2 just makes it painfully obvious to final how to do that. Patch nearly ready...
[Bug middle-end/68360] GCC bitfield processing code is very inefficient
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68360 Eric Botcazou changed: What|Removed |Added CC||ebotcazou at gcc dot gnu.org --- Comment #4 from Eric Botcazou --- > Here's another example where GCC generates suboptimal code for bitfield > initialization on x64: https://godbolt.org/g/WeqAr5. Again the code is better for example on SPARC: sll %o1, 30, %o1 sethi %hi(-1073741824), %g1 andn%o2, %g1, %o2 or %o1, %o2, %o1 jmp %o7+8 st %o1, [%o0] It is very bad on x86 because, when get_best_mode is invoked as such: get_best_mode (bitsize=2, bitpos=0, bitregion_start=0, bitregion_end=31, align=32, largest_mode=SImode, volatilep=false) at /home/eric/svn/gcc/gcc/stor-layout.c:2800 it returns QImode. If it returned SImode as on SPARC, the code would be: sall$2, %edx andl$3, %esi orl %edx, %esi movl%esi, (%rdi) ret
[Bug middle-end/78411] [7 Regression] FAIL: gcc.target/i386/pr45685.c scan-assembler-times cmov 6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78411 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek --- We used to expect and emitted 4 cmovs before r239414, which changed it to 6 and also changed the expectations, which is what is emitted even with current trunk. I can't reproduce the failure, even with -march=corei7 -mtune=corei7 that likely H.J. uses. Perhaps he has cmov in some pathname or somewhere else, maybe the test should scan for "cmov\[a-z]\[a-z]?\t" or something similar.
[Bug fortran/54613] [F03] [F08] Add FINDLOC plus support MAXLOC/MINLOC with KIND=/BACK=
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54613 --- Comment #3 from Dominique d'Humieres --- At https://gcc.gnu.org/ml/fortran/2016-11/msg00179.html I wrote pr54613, sixth and eighth tests, Actually the tests were extracted from https://groups.google.com/forum/?fromgroups=#!topic/comp.lang.fortran/5eAz5ns6AG0, i.e., module m2procs implicit none contains recursive function fun(depth) result(r) integer r integer depth integer x(minval([1],mask=[.TRUE.])) integer y save x = 0 if(depth > 0) y = fun(depth-1) x = x+1 r = x(1) end function fun end module m2procs program minval2 use m2procs implicit none write(*,*) fun(1) end program minval2 and [Book15] f90/bug% diff -up pr54613_5.f90 pr54613_7.f90 --- pr54613_5.f90 2012-09-18 10:43:48.0 +0200 +++ pr54613_7.f90 2012-09-18 10:44:56.0 +0200 @@ -4,7 +4,7 @@ module m2procs recursive function fun(depth) result(r) integer r integer depth - integer x(minval([1],mask=[.TRUE.])) + integer x(sum(minloc([1]))) integer y save @@ -15,9 +15,9 @@ module m2procs end function fun end module m2procs -program minval2 +program minloc2 use m2procs implicit none write(*,*) fun(1) -end program minval2 +end program minloc2
[Bug fortran/78392] ICE in gfc_trans_auto_array_allocation, at fortran/trans-array.c:5979
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78392 --- Comment #5 from Dominique d'Humieres --- > As an alternative to removing the assert, one could possibly prevent SAVEd > variables in the main PROGRAM from being declared as "static" (which might > also cure the performance regressions that Dominique reported for my patch > for PR 55207)? Related to pr42122?
[Bug fortran/78392] ICE in gfc_trans_auto_array_allocation, at fortran/trans-array.c:5979
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78392 --- Comment #6 from janus at gcc dot gnu.org --- (In reply to Dominique d'Humieres from comment #5) > Related to pr42122? Don't think so.
[Bug fortran/71723] [5/6/7 Regression] [F08] ICE on invalid pointer initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723 --- Comment #8 from Walter Spector --- Hi Janus, The ifort compiler has no problem with your example in Comment #5. That example should be Standard Fortran 90. The newer F2008 data pointer initialization stuff is largely in §4.5.4.6, paragraph 2: "A pointer variable or component is data-pointer-initialization compatible with a target if the pointer is type compatible with the target, they have the same rank, all nondeferred type parameters of the pointer have the same values as the corresponding type parameters of the target, and the target is contiguous if the pointer has the CONTIGUOUS attribute." Note the repeated use of the word "target". :)
[Bug middle-end/78411] [7 Regression] FAIL: gcc.target/i386/pr45685.c scan-assembler-times cmov 6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78411 --- Comment #3 from H.J. Lu --- I tried r242601 with -mtune=generic -march=x86-64. There is no cmov at all.
[Bug middle-end/78411] [7 Regression] FAIL: gcc.target/i386/pr45685.c scan-assembler-times cmov 6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78411 --- Comment #4 from Martin Sebor --- The test fails for me as well (that's how I noticed it). This is on trunk, with a straightforward build with -mtune=generic and -march=x86-64 passed by the driver. But it only fails on one of my machines (my laptop) and not on the other. I know yet what's different between two that triggers it.
[Bug middle-end/78411] [7 Regression] FAIL: gcc.target/i386/pr45685.c scan-assembler-times cmov 6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78411 --- Comment #5 from Jakub Jelinek --- Yeah, I've also noticed that in my working-directory gcc build (-O0, reconfigured hundreds of times, ...) the test fails, while in my cleanly bootstrapped one it succeeds, with the same -march=/-mtune= options. Apparently tree if-conversion just makes different decisions, until then the dumps are identical. Will do side-by-side debugging on Monday unless somebody beats me to do that.
[Bug libstdc++/78423] New: [c+11] error: use of deleted function 'std::basic_ostringstream
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78423 Bug ID: 78423 Summary: [c+11] error: use of deleted function 'std::basic_ostringstream Product: gcc Version: 4.9.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: snbraj at sasken dot com Target Milestone: --- Hi I am getting below error when I tries to build with gcc-4.9. -I../../../../common/inc/qstream -I../../../../../dependencies/mcpp/src ../../src//sectionAdapter.cpp -o ../../src//sectionAdapter.o ../../src//GLAdapter.cpp: In member function 'virtual void SDP::sectionAdapter::Process_sectionShaderSource(ObjectId32, int32_t, Data::PointerData*, Data::PointerData*)': ../../src//sectionAdapter.cpp:1224:28: error: use of deleted function 'std::basic_ostringstream& std::basic_ostringstream::operator=(const std::basic_ostringstream&)' s_preprocessed = std::ostringstream(); ^ In file included from ../../src//sectionAdapter.h:14:0, As per discussion in the below link this issue got fixed in GCC 5. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54316 Due to project constraints we are not supposed to upgrade our gcc to version 5 & above.Can you please guide is there any other way we can fix above errors without upgrading our gcc version. Kindly let me know if you need any more information. Regards Bharath
[Bug libstdc++/78423] [c+11] error: use of deleted function 'std::basic_ostringstream
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78423 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE Target Milestone|--- |5.0 --- Comment #1 from Andrew Pinski --- GCC 4.9.x is no longer maintained sorry. We maintain a release for ~2 years. >Can you please guide is there any other way we can fix above errors without >upgrading our gcc version. You could try to backport the referenced patch to GCC 4.9.x and go from there. *** This bug has been marked as a duplicate of bug 54316 ***
[Bug libstdc++/54316] [C++11] move constructor for stringstream
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54316 Andrew Pinski changed: What|Removed |Added CC||snbraj at sasken dot com --- Comment #11 from Andrew Pinski --- *** Bug 78423 has been marked as a duplicate of this bug. ***
[Bug libstdc++/78423] [c+11] error: use of deleted function 'std::basic_ostringstream
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78423 --- Comment #2 from Jonathan Wakely --- (In reply to Bharath from comment #0) > Due to project constraints we are not supposed to upgrade our gcc to version > 5 & above.Can you please guide is there any other way we can fix above > errors without upgrading our gcc version. Change your code so it doesn't use features that aren't supported by your toolchain.
[Bug c++/78420] std::less is not a total order with -O2 enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 --- Comment #5 from Andrew Pinski --- I think this deserves a Defect report to the C++ committee because even though std::less requires total order, < and <= usage are undefined if used with two different arrays.
[Bug c++/78420] std::less is not a total order with -O2 enabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420 --- Comment #6 from Jason Merrill --- (In reply to Tomasz Kamiński from comment #4) > Oh, you mean that compiler is not allowed to turn comparison of p == b into > false at compile time, using 5.10 [expr.eq] p2.1? No, it's very much allowed to do that. But I'm skeptical that it's allowed to turn !(a I think this deserves a Defect report to the C++ committee because even > though std::less requires total order, < and <= usage are undefined if used > with two different arrays. Which defect? That just means the implementation has to be more complex, e.g. casting to intptr_t before comparing.
[Bug rtl-optimization/78116] [7 regression] Performance drop after r241173 on avx512 target
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78116 Pat Haugen changed: What|Removed |Added Depends on||77536 --- Comment #8 from Pat Haugen --- Marking this as depends on pr77536. Before vectorization the loops have a BB freq of 8500, after vectorization the vectorized version of the loops have freq=536. It then appears IRA/reload pick the loop block as a spill location because the frequency is less than the surrounding preheader/exit blocks. To test this theory I compiled the 2 testcases under gdb and modified the frequency of the loop block at the start of ira() to be slightly greater than the preheader and the loads no longer occurred in the loop. For the first testcase, the loop is colder than the surrounding code even with r241172, but my change in r241173 made some changes in the CFG by removing a peeled copy of the loop. So there's a difference in CFGs which leads to differences in BB frequencies that I suspect is not passing some threshhold in the latter case and resulting in spill in the loop. For the second testcase, my patch in r241170 resulted in no changes to the CFG, only changes to the BB frequencies. After unrolling, the loop in r241169 ends up having a frequency greater than the surrounding code due to the incorrect code that was in loop-unroll.c. r241170 corrected that code and maintained the initial representation that the loop is colder than the surrounding code, which again leads to spill in the loop. Even though spill is not the desired result, I maintain that the changes in r241170 are the correct thing to do. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77536 [Bug 77536] Vectorizer not maintaining relationship of relative block frequencies in absence of real profile data
[Bug c++/67631] brace initialization bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67631 --- Comment #7 from Jason Merrill --- Author: jason Date: Fri Nov 18 20:27:26 2016 New Revision: 242603 URL: https://gcc.gnu.org/viewcvs?rev=242603&root=gcc&view=rev Log: PR c++/67631 - list-init and explicit conversions * semantics.c (finish_compound_literal): Call digest_init_flags. * typeck2.c (digest_init_flags): Add complain parm. (store_init_value): Pass it. Added: trunk/gcc/testsuite/g++.dg/cpp0x/initlist-explicit1.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/cp-tree.h trunk/gcc/cp/semantics.c trunk/gcc/cp/typeck2.c
[Bug c++/67631] brace initialization bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67631 --- Comment #8 from Jason Merrill --- Author: jason Date: Fri Nov 18 20:27:41 2016 New Revision: 242604 URL: https://gcc.gnu.org/viewcvs?rev=242604&root=gcc&view=rev Log: PR c++/67631 - list-init and explicit conversions * semantics.c (finish_compound_literal): Call digest_init_flags. * typeck2.c (digest_init_flags): Add complain parm. (store_init_value): Pass it. Added: branches/gcc-6-branch/gcc/testsuite/g++.dg/cpp0x/initlist-explicit1.C Modified: branches/gcc-6-branch/gcc/cp/ChangeLog branches/gcc-6-branch/gcc/cp/cp-tree.h branches/gcc-6-branch/gcc/cp/semantics.c branches/gcc-6-branch/gcc/cp/typeck2.c
[Bug c++/67631] brace initialization bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67631 Jason Merrill changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED Target Milestone|--- |6.3 --- Comment #9 from Jason Merrill --- Fixed for 6.3.