[Bug other/61439] New: contrib/download_prerequisites script does not verify integrity of packages
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61439 Bug ID: 61439 Summary: contrib/download_prerequisites script does not verify integrity of packages Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: other Assignee: unassigned at gcc dot gnu.org Reporter: jim at garrison dot cc The InstallingGCC page on the wiki recommends the use of the contrib/download_prerequisites script for fetching gcc's dependencies. However, the script fails to check the integrity of the downloaded files. Since it downloads specific versions of packages, perhaps it would be best to check against the known hash of each tarball.
[Bug tree-optimization/61438] New: ICE on valid code at -O3 on x86_64-linux-gnu in in loop_preheader_edge, at cfgloop.c:1668
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61438
Bug ID: 61438
Summary: ICE on valid code at -O3 on x86_64-linux-gnu in in
loop_preheader_edge, at cfgloop.c:1668
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 4.9.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-unknown-linux-gnu/4.10.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 4.10.0 20140606 (experimental) [trunk revision 211322] (GCC)
$
$ gcc-trunk -O2 small.c; a.out
$ gcc-4.9.0 -O3 small.c; a.out
$
$ gcc-trunk -O3 small.c
small.c: In function ‘foo’:
small.c:12:1: internal compiler error: in loop_preheader_edge, at
cfgloop.c:1668
foo ()
^
0x62e9ce loop_preheader_edge(loop const*)
../../gcc-trunk/gcc/cfgloop.c:1668
0xa3a6e0 block_before_loop
../../gcc-trunk/gcc/tree-scalar-evolution.h:48
0xa3a6e0 analyze_scalar_evolution(loop*, tree_node*)
../../gcc-trunk/gcc/tree-scalar-evolution.c:2042
0xa3b9ea analyze_scalar_evolution_in_loop
../../gcc-trunk/gcc/tree-scalar-evolution.c:2139
0xa3bb4f simple_iv(loop*, loop*, tree_node*, affine_iv*, bool)
../../gcc-trunk/gcc/tree-scalar-evolution.c:3244
0xae08a9 eliminate_dom_walker::before_dom_children(basic_block_def*)
../../gcc-trunk/gcc/tree-ssa-pre.c:4217
0xe94927 dom_walker::walk(basic_block_def*)
../../gcc-trunk/gcc/domwalk.c:177
0xadd372 eliminate
../../gcc-trunk/gcc/tree-ssa-pre.c:4451
0xadd7c3 execute
../../gcc-trunk/gcc/tree-ssa-pre.c:4867
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
-
#include
int a, c, **d, e, g;
static int b = 1;
struct
{
int f0;
} f;
void
foo ()
{
int h, *i = &a;
for (; e;)
{
for (c = 0; c < 1; c++)
for (; b;)
;
for (;;)
{
if (a)
{
for (; f.f0; f.f0++)
;
if (g)
break;
}
for (h = 0; h < 2; h++)
{
i = *d;
assert (i);
}
}
}
assert (i);
}
int
main ()
{
foo ();
return 0;
}
[Bug tree-optimization/61437] New: wrong code on x86_64-linux-gnu when compile separately
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61437
Bug ID: 61437
Summary: wrong code on x86_64-linux-gnu when compile separately
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
The current gcc trunk miscompiles the following files (foo.c and main.c) on
x86_64-linux in both 32-bit and 64-bit modes.
This is a regression from 4.9.x.
The merged file (merged.c) does not trigger the bug.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-unknown-linux-gnu/4.10.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 4.10.0 20140606 (experimental) [trunk revision 211322] (GCC)
$
$ gcc-trunk -O2 -c foo.c
$ gcc-trunk -O2 -c main.c
$ gcc-trunk -O2 foo.o main.o
$ a.out
a.out: foo.c:9: foo: Assertion `b == 0' failed.
Aborted (core dumped)
$
$ gcc-4.9.0 -O2 -c foo.c
$ gcc-4.9.0 -O2 -c main.c
$ gcc-4.9.0 -O2 foo.o main.o
$ a.out
$
$ gcc-trunk -O2 merged.c
$ a.out
$
$ cat foo.c
#include
extern int *b, **c;
int foo (void)
{
int *t = 0;
*c = t;
assert (b == 0);
}
$ cat main.c
extern int foo (void);
int a, *b = &a, **c = &b;
int main (void)
{
foo ();
return 0;
}
$
$ cat merged.c
#include
int a;
int *b = &a;
int **c = &b;
int
foo ()
{
int *t = 0;
*c = t;
assert (b == 0);
}
int
main ()
{
foo ();
return 0;
}
$
[Bug regression/61436] [4.10 Regression]: g++.dg/tls/diag-1.C ICE (emutls)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61436 Hans-Peter Nilsson changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever confirmed|0 |1
[Bug regression/61436] [4.10 Regression]: g++.dg/tls/diag-1.C ICE (emutls)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61436 Hans-Peter Nilsson changed: What|Removed |Added Target|mmix-knuth-mmixware |mmix-knuth-mmixware, ||cris-elf --- Comment #1 from Hans-Peter Nilsson --- Bah, I should've checked my cris-elf autotester, since I suspected an emutls-related bug. It confirms the issue, and says the regression was introduced in (210899:210906], consistent with the previous observations.
[Bug target/61387] [4.10 Regression] ~900 test failures on on x86_64-apple-darwin13 for g++ with -m64 after r211088
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61387 Hans-Peter Nilsson changed: What|Removed |Added CC||hp at gcc dot gnu.org --- Comment #6 from Hans-Peter Nilsson --- (In reply to Dominique d'Humieres from comment #5) > The following patch fixes the failures (not counting new ones: > g++.dg/debug/dwarf2/imported-decl-2.C and g++.dg/tls/diag-1.C). Is the g++.dg/tls/diag-1.C the same as in PR61436? Seems likely as darwin is IIUC an emutls target.
[Bug regression/61436] New: [4.10 Regression]: g++.dg/tls/diag-1.C ICE (emutls)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61436 Bug ID: 61436 Summary: [4.10 Regression]: g++.dg/tls/diag-1.C ICE (emutls) Product: gcc Version: 4.10.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: regression Assignee: unassigned at gcc dot gnu.org Reporter: hp at gcc dot gnu.org CC: hubicka at gcc dot gnu.org Host: x86_64-unknown-linux-gnu Target: mmix-knuth-mmixware This test previously passed, now it fails. A patch in the revision range (last_known_working:first_known_failing) r21:r211121 exposed or caused these regressions. Since then (up to and including at least r211290) it fails as follows: Running /home/hp/gcctop/tmp/mbgnu0/gcc/gcc/testsuite/g++.dg/tls/tls.exp ... FAIL: g++.dg/tls/diag-1.C -std=c++98 (internal compiler error) FAIL: g++.dg/tls/diag-1.C -std=c++98 (test for excess errors) FAIL: g++.dg/tls/diag-1.C -std=c++11 (internal compiler error) FAIL: g++.dg/tls/diag-1.C -std=c++11 (test for excess errors) FAIL: g++.dg/tls/diag-1.C -std=c++1y (internal compiler error) FAIL: g++.dg/tls/diag-1.C -std=c++1y (test for excess errors) I'm guessing all emutls targets are affected. The messages in g++.log are similar: spawn -ignore SIGHUP /home/hp/gcctop/tmp/mbase0/gccobj/gcc/testsuite/g++/../../xg++ -B/home/hp/gcctop/tmp/mbase0/gccobj/gcc/testsuite/g++/../../ /home/hp/gcctop/tmp/mbase0/gcc/gcc/testsuite/g++.dg/tls/diag-1.C -fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++ -I/home/hp/gcctop/tmp/mbase0/gccobj/mmix/libstdc++-v3/include/mmix -I/home/hp/gcctop/tmp/mbase0/gccobj/mmix/libstdc++-v3/include -I/home/hp/gcctop/tmp/mbase0/gcc/libstdc++-v3/libsupc++ -I/home/hp/gcctop/tmp/mbase0/gcc/libstdc++-v3/include/backward -I/home/hp/gcctop/tmp/mbase0/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -std=c++98 -pedantic-errors -Wno-long-long -S -isystem /home/hp/gcctop/tmp/mbase0/gccobj/mmix/./newlib/targ-include -isystem /home/hp/gcctop/tmp/mbase0/gcc/newlib/libc/include -o diag-1.s /home/hp/gcctop/tmp/mbase0/gcc/gcc/testsuite/g++.dg/tls/diag-1.C:31:1: internal compiler error: in symtab_get_node, at cgraph.h:1035 0xd610c3 symtab_get_node /home/hp/gcctop/tmp/mbase0/gcc/gcc/cgraph.h:1032 0xd610c3 varpool_get_node /home/hp/gcctop/tmp/mbase0/gcc/gcc/cgraph.h:1074 0xd610c3 varpool_node_for_decl(tree_node*) /home/hp/gcctop/tmp/mbase0/gcc/gcc/varpool.c:147 0xd54cb4 make_decl_one_only(tree_node*, tree_node*) /home/hp/gcctop/tmp/mbase0/gcc/gcc/varasm.c:5932 0xb2a14e get_emutls_init_templ_addr /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:254 0xb2a14e get_emutls_init_templ_addr /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:222 0xb2aade new_emutls_decl /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:339 0xb2aade create_emultls_var /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:717 0xd625ef varpool_for_node_and_aliases(varpool_node*, bool (*)(varpool_node*, void*), void*, bool) /home/hp/gcctop/tmp/mbase0/gcc/gcc/varpool.c:682 0xb2ba87 ipa_lower_emutls /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:788 0xb2ba87 execute /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:849 Please submit a full bug report, with preprocessed source if appropriate. Looking at the code, it seems the assert in symtab_get_node at cgraph.h:1035 trigs. This code was changed in r210901, though the assert was only copied. Still, many changes around that time by the same author, so there's a good chance the attribution is correct. :) A gdb session shows, at the gcc_assert: (gdb) p decl $15 = (const_tree) 0x77ea68e8 (gdb) pt unit size align 32 symtab 0 alias set -1 canonical type 0x77dbd690 precision 32 min max pointer_to_this > readonly used public ignored weak SI file /home/hp/gcctop/tmp/mbase0/gcc/gcc/testsuite/g++.dg/tls/diag-1.C line 25 col 12 size unit size align 32 context > (gdb) bt #0 fancy_abort (file=0xfa7550 "/home/hp/gcctop/tmp/mbase0/gcc/gcc/cgraph.h", line=1035, function=0xfa77e0 "symtab_get_node") at /home/hp/gcctop/tmp/mbase0/gcc/gcc/diagnostic.c:1190 #1 0x00d64ed4 in symtab_get_node (decl=0x77ea68e8) at /home/hp/gcctop/tmp/mbase0/gcc/gcc/cgraph.h:1032 #2 0x00d64f8b in varpool_get_node (decl=0x77ea68e8) at /home/hp/gcctop/tmp/mbase0/gcc/gcc/cgraph.h:1074 #3 0x00d655fc in varpool_node_for_decl (decl= ) at /home/hp/gcctop/tmp/mbase0/gcc/gcc/varpool.c:147 #4 0x00d58c85 in make_decl_one_only (decl=0x77ea68e8, comdat_group=0x77e9ca50) at /home/hp/gcctop/tmp/mbase0/gcc/gcc/varasm.c:5932 #5 0x00b2e11f in get_emutls_init_templ_addr (decl=0x77e94da8) at /home/hp/gcctop/tmp/mbase0/gcc/gcc/tree-emutls.c:254 #6 get_emutls_init_templ_addr (decl=0x77e94da8) at /home/hp/gcctop/tmp/m
[Bug target/18343] mmix-knuth-mmixware testsuite failure: gcc.dg/builtin-return-1.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18343 --- Comment #5 from Hans-Peter Nilsson --- Woops, this PR was actually for an *identical* file in gcc.dg. Anyway, that test passes without the patch these days so let's keep this PR closed.
[Bug target/18343] mmix-knuth-mmixware testsuite failure: gcc.dg/builtin-return-1.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18343 Hans-Peter Nilsson changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #4 from Hans-Peter Nilsson --- No ten-year anniversary, sorry. :]
[Bug target/18343] mmix-knuth-mmixware testsuite failure: gcc.dg/builtin-return-1.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18343 --- Comment #3 from Hans-Peter Nilsson --- Author: hp Date: Fri Jun 6 23:58:33 2014 New Revision: 211333 URL: http://gcc.gnu.org/viewcvs?rev=211333&root=gcc&view=rev Log: PR target/18343 * gcc.dg/torture/stackalign/builtin-return-1.c (STACK_ARGUMENTS_SIZE): New macro, 0 for __MMIX__, default 64. (bar): Pass it to __builtin_apply instead of literal 64. Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/torture/stackalign/builtin-return-1.c
[Bug target/61431] Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 --- Comment #4 from Michael Meissner --- Author: meissner Date: Fri Jun 6 23:52:36 2014 New Revision: 211332 URL: http://gcc.gnu.org/viewcvs?rev=211332&root=gcc&view=rev Log: 2014-06-06 Michael Meissner Back port from trunk 2014-06-06 Michael Meissner PR target/61431 * config/rs6000/vsx.md (VSX_LE): Split VSX_D into 2 separate iterators, VSX_D that handles 64-bit types, and VSX_LE that handles swapping the two 64-bit double words on little endian systems. Include V1TImode and optionally TImode in VSX_LE so that these types are properly swapped. Change all of the insns and splits that do the 64-bit swaps to use VSX_LE. (vsx_le_perm_load_): Likewise. (vsx_le_perm_store_): Likewise. (splitters for little endian memory operations): Likewise. (vsx_xxpermdi2_le_): Likewise. (vsx_lxvd2x2_le_): Likewise. (vsx_stxvd2x2_le_): Likewise. Modified: branches/gcc-4_8-branch/gcc/ChangeLog branches/gcc-4_8-branch/gcc/config/rs6000/vsx.md
[Bug target/61431] Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 --- Comment #3 from Michael Meissner --- Author: meissner Date: Fri Jun 6 23:46:23 2014 New Revision: 211331 URL: http://gcc.gnu.org/viewcvs?rev=211331&root=gcc&view=rev Log: 2014-06-06 Michael Meissner Back port from trunk 2014-06-06 Michael Meissner PR target/61431 * config/rs6000/vsx.md (VSX_LE): Split VSX_D into 2 separate iterators, VSX_D that handles 64-bit types, and VSX_LE that handles swapping the two 64-bit double words on little endian systems. Include V1TImode and optionally TImode in VSX_LE so that these types are properly swapped. Change all of the insns and splits that do the 64-bit swaps to use VSX_LE. (vsx_le_perm_load_): Likewise. (vsx_le_perm_store_): Likewise. (splitters for little endian memory operations): Likewise. (vsx_xxpermdi2_le_): Likewise. (vsx_lxvd2x2_le_): Likewise. (vsx_stxvd2x2_le_): Likewise. Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/config/rs6000/vsx.md
[Bug c++/61435] -imacros switch breaks warning/error reporting
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61435 --- Comment #1 from Andrew Pinski --- I think this is a dup of bug 60723.
[Bug c++/61435] New: -imacros switch breaks warning/error reporting
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61435 Bug ID: 61435 Summary: -imacros switch breaks warning/error reporting Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: oliver at bway dot net SUMMARY: -imacros switch breaks warning/error reporting When the -imacros switch is used, and the source file has errors or warnings, the file name in the warning message gets lost and is replaced with . GCC VERSION: $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) COMMAND LINE WHICH TRIGGERS BUG: g++ -imacros validinclude.h causeerror.cpp COMPILER OUTPUT (the output itself is the bug): :0:1: error: ‘blah’ does not name a type The source file causeerror.cpp has the one line: blah The valid file validinclude.h has the one line: #define one 1 HERE IS THE .ii file: # 1 "causeerror.cpp" # 1 "" # 1 "./validinclude.h" 1 # 1 "" 2 # 1 "/usr/include/stdc-predef.h" 1 3 4 # 1 "causeerror.cpp" # 1 "" 2 blah
[Bug target/61431] Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 --- Comment #2 from Michael Meissner --- Author: meissner Date: Fri Jun 6 23:15:36 2014 New Revision: 211329 URL: http://gcc.gnu.org/viewcvs?rev=211329&root=gcc&view=rev Log: 2014-06-06 Michael Meissner PR target/61431 * config/rs6000/vsx.md (VSX_LE): Split VSX_D into 2 separate iterators, VSX_D that handles 64-bit types, and VSX_LE that handles swapping the two 64-bit double words on little endian systems. Include V1TImode and optionally TImode in VSX_LE so that these types are properly swapped. Change all of the insns and splits that do the 64-bit swaps to use VSX_LE. (vsx_le_perm_load_): Likewise. (vsx_le_perm_store_): Likewise. (splitters for little endian memory operations): Likewise. (vsx_xxpermdi2_le_): Likewise. (vsx_lxvd2x2_le_): Likewise. (vsx_stxvd2x2_le_): Likewise. Modified: trunk/gcc/ChangeLog trunk/gcc/config/rs6000/vsx.md
[Bug ipa/61283] [4.10 regression] SEGV in pass_ipa_comdats::execute
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61283 Hans-Peter Nilsson changed: What|Removed |Added CC||hp at gcc dot gnu.org --- Comment #1 from Hans-Peter Nilsson --- Also seen for mmix-knuth-mmixware at r211121, worked at r21, host x86_64-linux.
[Bug tree-optimization/61434] New: wrong code at -O3 on x86_64-linux
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61434
Bug ID: 61434
Summary: wrong code at -O3 on x86_64-linux
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
The current gcc trunk miscompiles the following code on x86_64-linux at -O3 in
both 32-bit and 64-bit modes.
This is a regression from 4.9.x. The issue seems to be in the tree vectorizer
as the reported test does not fail with -fno-tree-vectorize.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-unknown-linux-gnu/4.10.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 4.10.0 20140606 (experimental) [trunk revision 211299] (GCC)
$
$ gcc-trunk -O2 small.c; a.out
$ gcc-trunk -fno-tree-vectorize -O3 small.c; a.out
$ gcc-4.9.0 -O3 small.c; a.out
$
$ gcc-trunk -O3 small.c
$ a.out
Aborted (core dumped)
$
-
int a, b[2], c, d, e, f, g;
struct
{
int f1:1;
int f2:1;
} w;
void
fn1 (int p1, int p2)
{
// does nothing
}
int
main ()
{
b[1] = 1;
for (; f < 1; f++)
{
w.f2 = 0;
if (w.f1)
fn1 (e++, a++ && d++);
}
for (; g < 1; g++)
c = b[a];
if (c != 0)
__builtin_abort ();
return 0;
}
[Bug debug/38757] gcc does not emit DW_LANG_C99
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38757 --- Comment #6 from Mark Wielaard --- Current 4.9 rebased version of the patch is here: http://pkgs.fedoraproject.org/cgit/gcc.git/tree/gcc49-pr38757.patch
[Bug c++/61433] New: [4.9/4.10 Regression] ICE: SIGSEGV in friend_accessible_p (search.c:778) with -std=gnu++11 -O -fcompare-debug -fno-inline -fno-ipa-pure-const -fipa-sra
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61433 Bug ID: 61433 Summary: [4.9/4.10 Regression] ICE: SIGSEGV in friend_accessible_p (search.c:778) with -std=gnu++11 -O -fcompare-debug -fno-inline -fno-ipa-pure-const -fipa-sra Product: gcc Version: 4.10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Created attachment 32906 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32906&action=edit reduced testcase Compiler output (under valgrind): $ gcc -std=gnu++11 -O -fcompare-debug -fno-inline -fno-ipa-pure-const -fipa-sra testcase.C ==2513== Invalid read of size 2 ==2513==at 0x7C4941: friend_accessible_p(tree_node*, tree_node*, tree_node*) (search.c:778) ==2513==by 0x7C4F58: accessible_p(tree_node*, tree_node*, bool) (search.c:928) ==2513==by 0x7C5114: accessible_base_p(tree_node*, tree_node*, bool) (search.c:171) ==2513==by 0x7C4564: lookup_base(tree_node*, tree_node*, int, base_kind*, int) (search.c:273) ==2513==by 0x79AE19: finish_class_member_access_expr(tree_node*, tree_node*, bool, int) (typeck.c:2755) ==2513==by 0x6A7BD0: tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) (pt.c:15187) ==2513==by 0x6AC207: tsubst(tree_node*, tree_node*, int, tree_node*) (pt.c:12280) ==2513==by 0x738DB0: dump_substitution(cxx_pretty_printer*, tree_node*, tree_node*, tree_node*, int) (error.c:330) ==2513==by 0x73B815: decl_as_string(tree_node*, int) (error.c:2738) ==2513==by 0xDAE0E5: dump_function_header(_IO_FILE*, tree_node*, int) (tree-pretty-print.c:3454) ==2513==by 0xA3589E: (anonymous namespace)::pass_clean_state::execute(function*) (final.c:4605) ==2513==by 0xC17387: execute_one_pass(opt_pass*) (passes.c:2180) ==2513==by 0xC177B5: execute_pass_list_1(opt_pass*) (passes.c:2233) ==2513==by 0xC17808: execute_pass_list(function*, opt_pass*) (passes.c:2244) ==2513==by 0x94D6AF: expand_function(cgraph_node*) (cgraphunit.c:1787) ==2513==by 0x94F863: compile() (cgraphunit.c:1921) ==2513==by 0x94FF64: finalize_compilation_unit() (cgraphunit.c:2342) ==2513==by 0x72C2DE: cp_write_global_declarations() (decl2.c:4647) ==2513==by 0xD1245C: compile_file() (toplev.c:562) ==2513==by 0xD14494: toplev_main(int, char**) (toplev.c:1918) ==2513==by 0x5A46BF4: (below main) (in /lib64/libc-2.17.so) ==2513== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==2513== ==2513== ==2513== Process terminating with default action of signal 11 (SIGSEGV) ==2513== Access not within mapped region at address 0x0 ==2513==at 0x7C4941: friend_accessible_p(tree_node*, tree_node*, tree_node*) (search.c:778) ==2513==by 0x7C4F58: accessible_p(tree_node*, tree_node*, bool) (search.c:928) ==2513==by 0x7C5114: accessible_base_p(tree_node*, tree_node*, bool) (search.c:171) ==2513==by 0x7C4564: lookup_base(tree_node*, tree_node*, int, base_kind*, int) (search.c:273) ==2513==by 0x79AE19: finish_class_member_access_expr(tree_node*, tree_node*, bool, int) (typeck.c:2755) ==2513==by 0x6A7BD0: tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) (pt.c:15187) ==2513==by 0x6AC207: tsubst(tree_node*, tree_node*, int, tree_node*) (pt.c:12280) ==2513==by 0x738DB0: dump_substitution(cxx_pretty_printer*, tree_node*, tree_node*, tree_node*, int) (error.c:330) ==2513==by 0x73B87E: decl_as_string_translate(tree_node*, int) (error.c:2746) ==2513==by 0x73AEA2: cp_diagnostic_starter(diagnostic_context*, diagnostic_info*) (error.c:3087) ==2513==by 0x15EA4B8: diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) (diagnostic.c:798) ==2513==by 0x15EB21F: internal_error(char const*, ...) (diagnostic.c:1136) ==2513==by 0xD123CF: crash_signal(int) (toplev.c:337) ==2513==by 0x5A5A5AF: ??? (in /lib64/libc-2.17.so) ==2513==by 0x7C4940: friend_accessible_p(tree_node*, tree_node*, tree_node*) (search.c:778) ==2513==by 0x7C4F58: accessible_p(tree_node*, tree_node*, bool) (search.c:928) ==2513==by 0x7C5114: accessible_base_p(tree_node*, tree_node*, bool) (search.c:171) ==2513==by 0x7C4564: lookup_base(tree_node*, tree_node*, int, base_kind*, int) (search.c:273) ==2513==by 0x79AE19: finish_class_member_access_expr(tree_node*, tree_node*, bool, int) (typeck.c:2755) ==2513==by 0x6A7BD0: tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) (pt.c:15187) ==2513==by 0x6AC207: tsubst(tree_node*, tree_node*, int, tree_node*) (pt.c:12280) ==2513==by 0x738DB0: dump_substitution(cxx_pretty_printer*, tree_node*, tree_node*, tree_node*, int) (error.c:330) ==2513==by 0x73B815: decl_as_string(tree_node*, int) (error.c:2738) ==2513==by 0xDAE0E5: dump_function_header(_IO_FILE*, tree_
[Bug preprocessor/36453] [DR 412] PR36320 breaks boost
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36453 Andrew Pinski changed: What|Removed |Added Status|SUSPENDED |NEW --- Comment #15 from Andrew Pinski --- Looks like there is TR about this now as far as I can tell from Feb 2012.
[Bug target/61407] Build errors on latest OS X 10.10 Yosemite with Xcode 6 on GCC 4.8.3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61407 --- Comment #7 from Andrew Pinski --- So it turns out there is a defect report against the C, see PR 36453 but that is only for #elif and not #if defined(a) && a()
[Bug preprocessor/36453] [DR 412] PR36320 breaks boost
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36453 --- Comment #14 from Andrew Pinski --- http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_412.htm
[Bug target/61407] Build errors on latest OS X 10.10 Yosemite with Xcode 6 on GCC 4.8.3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61407 Andrew Pinski changed: What|Removed |Added CC||denji0k at gmail dot com --- Comment #6 from Andrew Pinski --- *** Bug 61432 has been marked as a duplicate of this bug. ***
[Bug target/61431] Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 --- Comment #1 from Michael Meissner --- Created attachment 32905 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32905&action=edit Proposed patch to fix the problem
[Bug libgcc/61432] Build error gcc 4.9 on OSX 10.10
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61432 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #1 from Andrew Pinski --- Dup of bug 61407. *** This bug has been marked as a duplicate of bug 61407 ***
[Bug bootstrap/61432] New: Build error gcc 4.9 on OSX 10.10
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61432
Bug ID: 61432
Summary: Build error gcc 4.9 on OSX 10.10
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: denji0k at gmail dot com
Have problem build with OSX 10.10
checking build system type... x86_64-apple-darwin14.0.0
xgcc: warning: couldn’t understand kern.osversion ‘14.0.0
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/Availability.h:174:44:
error: missing binary operator before token "("
#if defined(__has_feature) &&
__has_feature(attribute_availability_with_message)
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/Availability.h:184:44:
error: missing binary operator before token "("
#if defined(__has_feature) &&
__has_feature(attribute_availability_app_extension)
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/Availability.h:184:44:
error: missing binary operator before token "("
#if defined(__has_feature) &&
__has_feature(attribute_availability_app_extension)
^
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423 --- Comment #7 from uros at gcc dot gnu.org --- Author: uros Date: Fri Jun 6 17:45:10 2014 New Revision: 211321 URL: http://gcc.gnu.org/viewcvs?rev=211321&root=gcc&view=rev Log: PR target/61423 * config/i386/i386.md (*floatunssi2_i387_with_xmm): New define_insn_and_split pattern, merged from *floatunssi2_1 and corresponding splitters. Zero extend general register or memory input operand to XMM temporary. Enable for TARGET_SSE2 and TARGET_INTER_UNIT_MOVES_TO_VEC only. (floatunssi2): Update expander predicate. testsuite/ChangeLog: PR target/61423 * gcc.target/i386/pr61423.c: New test. Added: trunk/gcc/testsuite/gcc.target/i386/pr61423.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.md trunk/gcc/testsuite/ChangeLog
[Bug rtl-optimization/61325] [4.10 regression] aarch64_be build fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61325 --- Comment #8 from Vladimir Makarov --- Author: vmakarov Date: Fri Jun 6 17:22:34 2014 New Revision: 211320 URL: http://gcc.gnu.org/viewcvs?rev=211320&root=gcc&view=rev Log: 2014-06-06 Vladimir Makarov PR rtl-optimization/61325 * lra-constraints.c (process_address_1): Check scale equal to one to prevent transformation: base + scale * index => base + new_reg. Modified: trunk/gcc/ChangeLog trunk/gcc/lra-constraints.c
[Bug rtl-optimization/61325] [4.10 regression] aarch64_be build fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61325 --- Comment #7 from Vladimir Makarov --- Author: vmakarov Date: Fri Jun 6 17:21:18 2014 New Revision: 211319 URL: http://gcc.gnu.org/viewcvs?rev=211319&root=gcc&view=rev Log: 2014-06-06 Vladimir Makarov PR rtl-optimization/61325 * lra-constraints.c (process_address_1): Check scale equal to one to prevent transformation: base + scale * index => base + new_reg. Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/lra-constraints.c
[Bug fortran/61429] SYSTEM_CLOCK used with non-default integer kind does not produce warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61429 kargl at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2014-06-06 CC||kargl at gcc dot gnu.org Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from kargl at gcc dot gnu.org --- I have a patch.
[Bug middle-end/61430] [4.10 regression] ICE in lra_create_copy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61430 --- Comment #3 from christophe.lyon at st dot com --- Probably, since the build succeeded at rev 211303.
[Bug c++/60184] g++ does not allow static members of named unions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60184 Paolo Carlini changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED Assignee|paolo.carlini at oracle dot com|unassigned at gcc dot gnu.org --- Comment #3 from Paolo Carlini --- Fixed for 4.10.0.
[Bug c++/55004] [meta-bug] constexpr issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 60184, which changed state. Bug 60184 Summary: g++ does not allow static members of named unions https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60184 What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED
[Bug c++/60184] g++ does not allow static members of named unions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60184 --- Comment #2 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 6 16:01:37 2014 New Revision: 211318 URL: http://gcc.gnu.org/viewcvs?rev=211318&root=gcc&view=rev Log: /cp 2014-06-06 Paolo Carlini PR c++/60184 * class.c (check_field_decls): In C++11 mode do not reject static data members and reference-type members in unions. /testsuite 2014-06-06 Paolo Carlini PR c++/60184 * g++.dg/cpp0x/constexpr-union6.C: New. * g++.dg/cpp0x/union6.C: Likewise. * g++.dg/init/ref14.C: Adjust. * g++.dg/init/union1.C: Likewise. Added: trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-union6.C trunk/gcc/testsuite/g++.dg/cpp0x/union6.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/class.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/g++.dg/init/ref14.C trunk/gcc/testsuite/g++.dg/init/union1.C
[Bug target/61431] Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 Michael Meissner changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2014-06-06 Ever confirmed|0 |1
[Bug middle-end/61428] "maybe-uninitialized" is broken in all current versions (4.7-4.10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61428 Richard Biener changed: What|Removed |Added Keywords||diagnostic Status|UNCONFIRMED |NEW Last reconfirmed||2014-06-06 Component|c |middle-end Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- Confirmed.
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423 Uroš Bizjak changed: What|Removed |Added CC||law at gcc dot gnu.org --- Comment #6 from Uroš Bizjak --- Jeff, can you please look at what goes wrong in REE pass?
[Bug middle-end/61430] [4.10 regression] ICE in lra_create_copy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61430 Richard Biener changed: What|Removed |Added Target||arm-none-linux-gnueabihf CC||vmakarov at gcc dot gnu.org Target Milestone|--- |4.10.0 --- Comment #2 from Richard Biener --- Well, an LRA ICE is unlikely caused by this change. It must be a latent issue instead.
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423
--- Comment #5 from Uroš Bizjak ---
Created attachment 32903
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32903&action=edit
Testcase that fails in REE pass
This testcase fails with patched gcc in REE pass:
cc1 -O2 -m32 -march=corei7 libgcc2.i
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c: In function ‘__fixunssfdi’:
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1492:1: error: insn does not satisfy
its constraints:
}
^
(insn 54 11 47 2 (set (reg:DI 0 ax)
(reg:DI 21 xmm0)) /home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1444 89
{*movdi_internal}
(expr_list:REG_UNUSED (reg:DI 0 ax)
(nil)))
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1492:1: internal compiler error: in
copyprop_hardreg_forward_1, at regcprop.c:776
...
_split2 pass produces correct sequence:
(insn 46 11 47 2 (set (reg:DI 21 xmm0 [118])
(zero_extend:DI (reg/v:SI 0 ax [orig:85 hi ] [85])))
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1452 133 {*zero_extendsidi2}
(nil))
(insn 47 46 48 2 (set (mem/c:DI (reg/f:SI 7 sp) [0 S8 A64])
(reg:DI 21 xmm0 [118])) /home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1452
89 {*movdi_internal}
(nil))
(insn 48 47 13 2 (set (reg:DF 9 st(1) [orig:101 D.6895 ] [101])
(float:DF (mem/c:DI (reg/f:SI 7 sp) [0 S8 A64])))
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1452 206 {*floatdidf2_i387}
(nil))
and _ree pass converts this to:
(insn 11 45 54 2 (set (reg:DI 21 xmm0)
(zero_extend:DI (reg:SI 2 cx [99])))
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1444 133 {*zero_extendsidi2}
(nil))
(insn 54 11 47 2 (set (reg:DI 0 ax)
(reg:DI 21 xmm0)) /home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1444 -1
(nil))
(insn 47 54 48 2 (set (mem/c:DI (reg/f:SI 7 sp) [0 S8 A64])
(reg:DI 21 xmm0 [118])) /home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1452
89 {*movdi_internal}
(nil))
(insn 48 47 13 2 (set (reg:DF 9 st(1) [orig:101 D.6895 ] [101])
(float:DF (mem/c:DI (reg/f:SI 7 sp) [0 S8 A64])))
/home/uros/gcc-svn/trunk/libgcc/libgcc2.c:1452 206 {*floatdidf2_i387}
(nil))
Please note ivalid (insn 54).
[Bug target/61431] New: Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61431 Bug ID: 61431 Summary: Powerpc tests pack01.c and p8vector-int128-2.c fail on little endian power8 systems Product: gcc Version: 4.10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: meissner at gcc dot gnu.org Host: powerpc64le-linux Target: powerpc64le-linux Build: powerpc64le-linux The pack01.c test fails on GCC 4.8 on little endian power8 systems. In looking at it, it is a latent bug where the V1TI memory operations do not have the word swapping define_split support. GCC 4.9 and trunk can optimize the union to stay in a register, so the test case passes on those systems, but it is still a bug that would be exposed if you ever need to store vector __int128 values. The test p8vector-int128-2.c is such a case, and it needs the fix.
[Bug middle-end/61430] [4.10 regression] ICE in lra_create_copy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61430 --- Comment #1 from christophe.lyon at st dot com --- Created attachment 32902 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32902&action=edit vfscanf.i
[Bug tree-optimization/59299] We do not sink loads
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59299 Richard Biener changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #2 from Richard Biener --- Fixed.
[Bug middle-end/61430] New: [4.10 regression] ICE in lra_create_copy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61430 Bug ID: 61430 Summary: [4.10 regression] ICE in lra_create_copy Product: gcc Version: 4.10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: christophe.lyon at st dot com Commit 211304 (Move 2nd VRP pass before phi-only-cprop) make GCC ICE when build glibc for target arm-none-linux-gnueabihf --with-cpu=cortex-a5 (works with cortex-a9). Compile with: $ arm-none-linux-gnueabihf-gcc vfscanf.i -c -std=gnu99 -O2 vfscanf.c: In function '_IO_vfscanf_internal': vfscanf.c:2937:1: internal compiler error: in lra_create_copy, at lra.c:1368 } ^ 0x86ad8b lra_create_copy(int, int, int) /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/lra.c:1368 0x8836a0 process_bb_lives /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/lra-lives.c:568 0x8836a0 lra_create_live_ranges(bool) /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/lra-lives.c:1019 0x86c3b4 lra(_IO_FILE*) /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/lra.c:2212 0x82c62e do_reload /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/ira.c:5414 0x82c62e execute /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/ira.c:5575 Please submit a full bug report, gcc configured with: --target=arm-none-linux-gnueabihf --enable-languages=c --with-float=hard --enable-build-with-cxx --with-mode=arm --with-cpu=cortex-a5 --with-fpu=vfpv3-d16-fp16
[Bug tree-optimization/59299] We do not sink loads
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59299 --- Comment #1 from Richard Biener --- Author: rguenth Date: Fri Jun 6 15:31:47 2014 New Revision: 211317 URL: http://gcc.gnu.org/viewcvs?rev=211317&root=gcc&view=rev Log: 2014-06-06 Richard Biener PR tree-optimization/59299 * tree-ssa-sink.c (all_immediate_uses_same_place): Work on a def operand. (nearest_common_dominator_of_uses): Likewise. (statement_sink_location): Adjust. Support sinking loads. * gcc.dg/tree-ssa/ssa-sink-10.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-10.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-sink.c
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423 --- Comment #4 from Uroš Bizjak --- Created attachment 32901 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32901&action=edit Proposed patch This patch fies invalid code gen, but unfortunately uncovers a problem in REE pass and fails bootstrap when configured "--with-arch=core-avx-i --with-cpu=core-avx-i".
[Bug c++/61421] Invalid -O2 optimization breaks program
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61421 --- Comment #19 from mimamer at gmail dot com --- One last comment on strict aliasing rules: It is ironic that these rules are supposed to make programs faster, but those developers that really care about speed are prevented from implementing even moderate optimizations (see discussion) because of these rules! Again, the concept of strict aliasing rules is broken.
[Bug fortran/61429] New: SYSTEM_CLOCK used with non-default integer kind does not produce warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61429 Bug ID: 61429 Summary: SYSTEM_CLOCK used with non-default integer kind does not produce warning Product: gcc Version: 4.8.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: thatcadguy at gmail dot com Compiling: program main implicit none integer(kind=8) :: i call system_clock(i) end program main with gfortran -std=f95 -pedantic -Wall -Wextra produces no warning. According to the F95 standard (13.14.106), "COUNT (optional) shall be scalar and of type default integer" (it's the same for COUNT_RATE and COUNT_MAX). It's not until F2003 (13.7.117) that the wording is changed to "COUNT (optional) shall be scalar and of type integer." Summary: using any other kind but default integer with system_clock should not be allowed or give a warning under -std=f95, but should be allowed for -std=f2003 and later.
[Bug middle-end/56574] False possibly uninitialized variable warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56574 --- Comment #10 from Andy Lutomirski --- See PR59500 for another example without &&. I think I can reduce another test case with only if and else.
[Bug c/61428] New: "maybe-uninitialized" is broken in all current versions (4.7-4.10)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61428 Bug ID: 61428 Summary: "maybe-uninitialized" is broken in all current versions (4.7-4.10) Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: aladjev.andrew at gmail dot com Created attachment 32900 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32900&action=edit test.c Please checkout attached test.c. There are no variables in this file, that may be uninitialized. gcc-4.7.3 -Werror -pedantic -Wall -Wextra -std=gnu99 -pthread -pipe -O2 test.c -o test >> test.c: In function ‘func’: test.c:54:14: error: ‘lock_1’ may be used uninitialized in this function [-Werror=maybe-uninitialized] cc1: all warnings being treated as errors gcc-4.8.2 -Werror -pedantic -Wall -Wextra -std=gnu99 -pthread -pipe -O2 test.c -o test >> test.c: In function ‘func’: test.c:54:14: error: ‘lock_1’ may be used uninitialized in this function [-Werror=maybe-uninitialized] free ( lock_1 ); ^ cc1: all warnings being treated as errors gcc-4.9.0-pre -Werror -pedantic -Wall -Wextra -std=gnu99 -pthread -pipe -O2 test.c -o test >> test.c: In function ‘func’: test.c:44:17: error: ‘lock_1’ may be used uninitialized in this function [-Werror=maybe-uninitialized] free ( lock_1 ); ^ cc1: all warnings being treated as errors gcc-4.10.0-pre -Werror -pedantic -Wall -Wextra -std=gnu99 -pthread -pipe -O2 test.c -o test >> test.c: In function ‘func’: test.c:44:17: error: ‘lock_1’ may be used uninitialized in this function [-Werror=maybe-uninitialized] free ( lock_1 ); ^ cc1: all warnings being treated as errors
[Bug middle-end/56574] False possibly uninitialized variable warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56574 Manuel López-Ibáñez changed: What|Removed |Added CC||manu at gcc dot gnu.org --- Comment #9 from Manuel López-Ibáñez --- (In reply to Eric Botcazou from comment #8) > > ISO C99 6.5.13 says that 'value' is not evaluated when !flag is false. But > > clearly we are not considering the "side-effect" of using an uninitialized > > variable when deciding to output straight-line code sequences. > > But evaluating an uninitialized variable is not a side-effect, unless > accessing the variable itself has a side-effect, so there is no wrong code > here. Perhaps the uninit pass can be taught that for a & b when a may be uninitialized is actually guarded by if(b!=0). I think this will fix the bug here, no?
[Bug middle-end/56888] memcpy implementation optimized as a call to memcpy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 --- Comment #33 from Jakub Jelinek --- Yeah, I'd say we could document that gcc doesn't support any implementations where memcpy/memmove/memset clobber errno.
[Bug c++/51373] [C++0x] ICE for static pointer to member initialized in-class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51373 --- Comment #6 from Vladimír Štill --- (In reply to Jonathan Wakely from comment #5) > Fixed in 4.9.0 though I'm glad to hear that, I could not yet installed 4.9.0 in my OS.
[Bug middle-end/56888] memcpy implementation optimized as a call to memcpy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 --- Comment #32 from rguenther at suse dot de --- On Fri, 6 Jun 2014, terra at gnome dot org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 > > M Welinder changed: > >What|Removed |Added > > CC||terra at gnome dot org > > --- Comment #31 from M Welinder --- > Extra complication: the C library's memcpy may change errno to any non-zero > value if it so desires. (C99 section 7.5 #5.) That's news to me. > That means that raw calls to memcpy (and friends) cannot be generated anywhere > where the compiler is unable to prove that the value of errno isn't used. That's almost impossible. > Extra code to store and restore errno must be emitted otherwise. That is not possible. Note that the compiler emits calls to memcpy for struct copies anyway, so if there is a problem it is a long-standing one.
[Bug c++/51373] [C++0x] ICE for static pointer to member initialized in-class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51373 Jonathan Wakely changed: What|Removed |Added Status|NEW |RESOLVED Known to work||4.10.0, 4.9.0 Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #5 from Jonathan Wakely --- Fixed in 4.9.0 though
[Bug c++/51373] [C++0x] ICE for static pointer to member initialized in-class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51373
--- Comment #4 from Vladimír Štill ---
Problem is still present in 4.8.2, reproduce with following code, which
compiles in clang 3.4 (both with -std=c++11):
struct Y {
int o;
static constexpr int Y::* x = &Y::o;
};
gcc -v result included in previous comment. Tested on NixOS linux x86_64.
[Bug c++/51373] [C++0x] ICE for static pointer to member initialized in-class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51373 Vladimír Štill changed: What|Removed |Added CC||vl.still at gmail dot com --- Comment #3 from Vladimír Štill --- Created attachment 32899 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32899&action=edit gcc -v result
[Bug bootstrap/61320] [4.10 regression] ICE in jcf-parse.c:1622 (parse_class_file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61320 --- Comment #34 from Thomas Preud'homme --- Ok, committed then.
[Bug middle-end/56888] memcpy implementation optimized as a call to memcpy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 M Welinder changed: What|Removed |Added CC||terra at gnome dot org --- Comment #31 from M Welinder --- Extra complication: the C library's memcpy may change errno to any non-zero value if it so desires. (C99 section 7.5 #5.) That means that raw calls to memcpy (and friends) cannot be generated anywhere where the compiler is unable to prove that the value of errno isn't used. Extra code to store and restore errno must be emitted otherwise.
[Bug bootstrap/61320] [4.10 regression] ICE in jcf-parse.c:1622 (parse_class_file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61320
--- Comment #33 from ro at CeBiTec dot Uni-Bielefeld.DE ---
> --- Comment #32 from Thomas Preud'homme ---
[...]
> Are you sure the patch was applied to this test? Line 78 I have "bfin.inval =
> (struct ok) { 0x83, 0x85, 0x87, 0x89 };"
>
> The next abort about this line is under a "if (out == 0x89878583)" so would
> not
> abort either. By the way, no need to do a bootstrap again or run the whole
> testsuite to try this patch, only this test was changed.
Sorry, I've been dreaming: I'd only applied
https://gcc.gnu.org/ml/gcc-patches/2014-06/msg00294.html
and
https://gcc.gnu.org/ml/gcc-patches/2014-06/msg00295.html
With the correct patch for bswap-2.c, the test passes for
sparc-sun-solaris2.11 (both 32 and 64-bit).
Sorry for the noise.
Rainer
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423 Uroš Bizjak changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com --- Comment #3 from Uroš Bizjak --- Looking into it.
[Bug c++/60184] g++ does not allow static members of named unions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60184 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed||2014-06-06 Blocks||55004 Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com Target Milestone|--- |4.10.0 Ever confirmed|0 |1 --- Comment #1 from Paolo Carlini --- Seems easy to fix.
[Bug c++/60432] Member pointer resolution within class definition causes segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60432 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Known to work||4.10.0 Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #7 from Paolo Carlini --- Done.
[Bug c++/60432] Member pointer resolution within class definition causes segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60432 --- Comment #6 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 6 10:00:55 2014 New Revision: 211312 URL: http://gcc.gnu.org/viewcvs?rev=211312&root=gcc&view=rev Log: 2014-06-06 Paolo Carlini PR c++/60432 * g++.dg/cpp0x/constexpr-60432.C: New. Added: trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-60432.C Modified: trunk/gcc/testsuite/ChangeLog
[Bug c++/60432] Member pointer resolution within class definition causes segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60432 --- Comment #5 from Paolo Carlini --- Let's add the testcase and close the bug.
[Bug c++/60199] 'error: field initializer is not constant' when initializing static member function pointer to a function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60199 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Known to work||4.10.0, 4.9.0 Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #4 from Paolo Carlini --- Done.
[Bug c++/60199] 'error: field initializer is not constant' when initializing static member function pointer to a function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60199 --- Comment #3 from paolo at gcc dot gnu.org --- Author: paolo Date: Fri Jun 6 09:52:33 2014 New Revision: 211310 URL: http://gcc.gnu.org/viewcvs?rev=211310&root=gcc&view=rev Log: 2014-06-06 Paolo Carlini PR c++/60199 * g++.dg/cpp0x/constexpr-60199.C: New. Added: trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-60199.C Modified: trunk/gcc/testsuite/ChangeLog
[Bug c++/60199] 'error: field initializer is not constant' when initializing static member function pointer to a function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60199 --- Comment #2 from Paolo Carlini --- Yes, this is fixed, I'm adding the testcase and closing the bug.
[Bug c++/61305] internal compiler error: in cp_tree_equal, at cp/tree.c:2371
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61305 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Known to work||4.10.0, 4.8.0, 4.9.0 Resolution|--- |WORKSFORME --- Comment #1 from Paolo Carlini --- This works for me in the active branches (4.6 is not maintained anymore).
[Bug c++/60771] rejects-valid: static in-class constexpr const reference initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60771 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2014-06-06 Blocks||55004 Ever confirmed|0 |1
[Bug c++/60878] Explicit Specialization of Inner Template Class In A Template Class, Using an Enum class in Parent Template Class as Template Argument
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60878 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #2 from Paolo Carlini --- Closing.
[Bug c++/60755] lambda capturing `this` doesn't honor const qualifier of the enclosing member function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60755 Paolo Carlini changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |4.10.0 --- Comment #4 from Paolo Carlini --- I think we can close this as fixed in 4.10.0.
[Bug lto/61123] With LTO, -fno-short-enums is ignored, resulting in ABI mis-matching in linking.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61123 Ramana Radhakrishnan changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2014-06-06 CC||ramana at gcc dot gnu.org Target Milestone|--- |4.10.0 Ever confirmed|0 |1
[Bug bootstrap/61320] [4.10 regression] ICE in jcf-parse.c:1622 (parse_class_file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61320
--- Comment #32 from Thomas Preud'homme ---
(In reply to r...@cebitec.uni-bielefeld.de from comment #31)
> > --- Comment #30 from Thomas Preud'homme
> > ---
> > Can you run the test manually under gdb and tell me what is the value for
> > the
> > "out" variable in hex format?
>
> Sure: the -O0 test aborts at line 78, where out is
>
> (gdb) p/x out
> $11 = 0x44434241
> (gdb) p (char[4])out
> $12 = "DCBA"
>
> Rainer
Are you sure the patch was applied to this test? Line 78 I have "bfin.inval =
(struct ok) { 0x83, 0x85, 0x87, 0x89 };"
The next abort about this line is under a "if (out == 0x89878583)" so would not
abort either. By the way, no need to do a bootstrap again or run the whole
testsuite to try this patch, only this test was changed.
[Bug bootstrap/61320] [4.10 regression] ICE in jcf-parse.c:1622 (parse_class_file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61320 --- Comment #31 from ro at CeBiTec dot Uni-Bielefeld.DE --- > --- Comment #30 from Thomas Preud'homme --- > Can you run the test manually under gdb and tell me what is the value for the > "out" variable in hex format? Sure: the -O0 test aborts at line 78, where out is (gdb) p/x out $11 = 0x44434241 (gdb) p (char[4])out $12 = "DCBA" Rainer
[Bug debug/53927] wrong value for DW_AT_static_link
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53927 --- Comment #12 from Eric Botcazou --- Author: ebotcazou Date: Fri Jun 6 08:13:24 2014 New Revision: 211308 URL: http://gcc.gnu.org/viewcvs?rev=211308&root=gcc&view=rev Log: PR debug/53927 * function.c (instantiate_decls): Process the saved static chain. (expand_function_start): If not optimizing, save the static chain onto the stack. * tree-nested.c (convert_all_function_calls): Always create the static chain for nested functions if not optimizing. Modified: trunk/gcc/ChangeLog trunk/gcc/function.c trunk/gcc/tree-nested.c
[Bug target/61423] Incorrect conversion from unsigned int to floating point
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423
Richard Biener changed:
What|Removed |Added
Keywords||wrong-code
Target||i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed||2014-06-06
Component|c |target
Ever confirmed|0 |1
--- Comment #2 from Richard Biener ---
Confirmed. Works with -mfpmath=sse. Initial RTL looks ok to me:
(insn 21 20 22 (set (reg:SI 99 [ stmp_sum_5.8 ])
(vec_select:SI (reg:V4SI 98 [ vect_sum_5.9 ])
(parallel [
(const_int 0 [0])
]))) -1
(nil))
(insn 22 21 23 (parallel [
(set (reg:DF 97 [ t ])
(unsigned_float:DF (reg:SI 99 [ stmp_sum_5.8 ])))
(clobber (mem/c:DI (plus:SI (reg/f:SI 78 virtual-stack-vars)
(const_int -8 [0xfff8])) [0 S8 A64]))
(clobber (scratch:SI))
]) t.c:18 -1
(nil))
(insn 23 22 24 (set (reg:DF 94 [ ])
(reg:DF 97 [ t ])) t.c:19 -1
(nil))
So it must be a bogus *floatunssidf2_1 pattern
(insn 22 21 28 4 (parallel [
(set (reg:DF 8 st [orig:97 t ] [97])
(unsigned_float:DF (reg:SI 21 xmm0 [orig:99 stmp_sum_5.8 ]
[99])))
(clobber (mem/c:DI (plus:SI (reg/f:SI 7 sp)
(const_int 8 [0x8])) [0 S8 A64]))
(clobber (scratch:SI))
]) t.c:18 211 {*floatunssidf2_1}
(nil))
split to
(insn 39 38 40 4 (set (mem/c:DI (plus:SI (reg/f:SI 7 sp)
(const_int 8 [0x8])) [0 S8 A64])
(reg:DI 21 xmm0 [orig:99 stmp_sum_5.8 ] [99])) t.c:18 89
{*movdi_internal}
(nil))
(insn 40 39 28 4 (set (reg:DF 8 st [orig:97 t ] [97])
(float:DF (mem/c:DI (plus:SI (reg/f:SI 7 sp)
(const_int 8 [0x8])) [0 S8 A64]))) t.c:18 206
{*floatdidf2_i387}
(nil))
note the use of a DImode memory but the missing zero-extend of xmm0:DI.
[Bug middle-end/56574] False possibly uninitialized variable warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56574 Eric Botcazou changed: What|Removed |Added Keywords|wrong-code | CC||ebotcazou at gcc dot gnu.org --- Comment #8 from Eric Botcazou --- > ISO C99 6.5.13 says that 'value' is not evaluated when !flag is false. But > clearly we are not considering the "side-effect" of using an uninitialized > variable when deciding to output straight-line code sequences. But evaluating an uninitialized variable is not a side-effect, unless accessing the variable itself has a side-effect, so there is no wrong code here. > Affected are at least gimple SSA if-combine and eventually fold and > gimplification (I didn't check them). > > Ok, for this testcase it is fold that ends up producing a TRUTH_AND_EXPR. This analysis looks bogus to me.
[Bug libstdc++/61425] std::regex ignores backslash when using basic or grep grammars
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61425 --- Comment #4 from Andreas Schwab --- \| is just undefined in BRE, so an implementation can do whatever it wants.
[Bug tree-optimization/43934] LIM should handle PHI nodes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43934 --- Comment #4 from chrbr at gcc dot gnu.org --- Author: chrbr Date: Fri Jun 6 07:21:02 2014 New Revision: 211302 URL: http://gcc.gnu.org/viewcvs?rev=211302&root=gcc&view=rev Log: PR tree-optimization/43934 * tree-ssa-loop-im.c (determine_max_movement): Add PHI def constant cost. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-lim-8.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-loop-im.c
