[Bug target/116972] _march=x86_64 uses rep instead of see to do the zeroing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116972 Andrew Pinski changed: What|Removed |Added Component|tree-optimization |target Summary|missed vectorization when |_march=x86_64 uses rep |an array of type 'long' is |instead of see to do the |initialized to 0|zeroing --- Comment #1 from Andrew Pinski --- This is not exactly a missed optimization. Rather the default settings for the generic x86_64 is to use rep stosq for the memset of 0 rather than use the vector registers to do the zeroing. If you use different-march= you see that.
[Bug c++/116954] [13/14/15 Regression] format attribute is being lost for function template with a depedent type argument and decl merging since r13-4160-g2efb237ffc68ec
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116954 --- Comment #5 from Andrew Pinski --- (In reply to Sam James from comment #4) > r13-4160-g2efb237ffc68ec ??? It does touch duplicate_decls which I had assumed might be the issue here. Duplicate_decls is where the merging of the 2 decls happen and if we remove either the definition or the declaration we get the format warning.
[Bug rtl-optimization/116968] New: There should be an rtl version of stmt_unremovable_because_of_non_call_eh_p
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116968 Bug ID: 116968 Summary: There should be an rtl version of stmt_unremovable_because_of_non_call_eh_p Product: gcc Version: 15.0 Status: UNCONFIRMED Keywords: internal-improvement Severity: enhancement Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Target Milestone: --- This came up in the review here: https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664390.html ``` I don't like these magic flags that every relevant pass has to remember to check individually. In practice, the only way they will be checked is if code is copied-and-pasted between passes (meaning an abstraction is missing) or by trial and error. I couldn't find an obvious helper routine for it, though, so I agree this is the established best practice. ``` On the gimple side we have stmt_unremovable_because_of_non_call_eh_p though it has been forgot to be checked every once in a while (e.g. r12-4661-g7518e4c2f0758d ). Maybe there is a better abstraction here for both rtl and gimple.
[Bug c++/116967] Accepts-invalid missing constinit specifier on initializing declaration
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116967 Andrew Pinski changed: What|Removed |Added Known to fail||10.1.0 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed||2024-10-04 --- Comment #2 from Andrew Pinski --- Confirmed. Looks like we just merge it and don't have any diagnostic. DECL_DECLARED_CONSTINIT_P (newdecl) |= DECL_DECLARED_CONSTINIT_P (olddecl); Shouldn't be too hard to add the required diagnostic to duplicate_decls I think.
[Bug objc/116966] obj-c++.dg/property/dotsyntax-20.mm test fails after syntax fix
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116966 --- Comment #1 from Andrew Pinski --- Comment from the testcase: /* Now test some warnings. */ object.p1; /* This warning does not seem to be produced in C++. dg-warning "value computed is not used" */
[Bug objc/116965] obj-c++.dg/fobjc-std-1.mm test fails after syntax fix
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116965 --- Comment #1 from Andrew Pinski --- >contained a dg-* directive syntax issue which meant a directive was being >silently ignored. Yes and that was deliberate, comment from the testcase itself: /* There is a problem with the testsuite on the following line; the compiler seems Ok, but the testsuite still barfs. */ I don't think anyone has looked into the reason why though.
[Bug libstdc++/116964] FAIL: 18_support/comparisons/algorithms/fallback.cc -std=gnu++20 (test for excess errors)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116964 Andrew Pinski changed: What|Removed |Added Keywords||diagnostic --- Comment #1 from Andrew Pinski --- This might be new after r15-4045-gdca2b47916c664 .
[Bug libstdc++/116944] [15 Regression] 17_intro/headers/c++201[14]/parallel_mode.cc fails on aarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116944 Andrew Pinski changed: What|Removed |Added CC||danglin at gcc dot gnu.org --- Comment #4 from Andrew Pinski --- *** Bug 116963 has been marked as a duplicate of this bug. ***
[Bug libstdc++/116963] FAIL: 17_intro/headers/c++2011/parallel_mode.cc (test for excess errors)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116963 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #1 from Andrew Pinski --- This was fixed earlier today. *** This bug has been marked as a duplicate of bug 116944 ***
[Bug target/116962] Bad interaction between __attribute__((naked)) and -fstack-protector-all
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116962 --- Comment #1 from Andrew Pinski --- maybe naked attribute should imply no_stack_protector attribute (if it is not already).
[Bug c++/116954] [13/14/15 Regression] format attribute is being lost for function template with a depedent type argument and decl merging
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116954 --- Comment #3 from Andrew Pinski --- (In reply to Sam James from comment #2) > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116853#c0 Nice catch.
[Bug c++/116954] [13/14/15 Regression] format attribute is being lost for function template with a depedent type argument and decl merging
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116954 Andrew Pinski changed: What|Removed |Added Keywords||needs-bisection Target Milestone|--- |13.4
[Bug c++/116954] [13/14/15 Regression] format attribute is being lost for function template with a depedent type argument and decl merging
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116954
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed||2024-10-03
Ever confirmed|0 |1
Known to work||12.1.0, 12.4.0, 7.1.0,
||9.1.0
Summary|-Wsuggest-attribute=format |[13/14/15 Regression]
|false positive for function |format attribute is being
|template|lost for function template
||with a depedent type
||argument and decl merging
Keywords||diagnostic
Status|UNCONFIRMED |NEW
Known to fail|13.2.0, 13.3.0, 13.3.1, |3.4.6
|14.1.0, 14.2.0 |
--- Comment #1 from Andrew Pinski ---
Actually the problem is not with `Wsuggest-attribute=format` but rather the C++
front-end losing the format attribute when it comes to dependent array types
and merging decls.
Take:
```
#ifndef WORKS
template
int fn(char (&buf)[N], const char fmt[], ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
#endif
template
__attribute__ ((__format__ (__printf__, 2, 3)))
int fn(char (&)[N], const char [], ...)
{ return 0; }
int main()
{
char buf[20];
return fn(buf, "%s", 42); /* { dg-warning "Wformat" } */
}
```
This used to work in some versions of GCC but no longer works.
[Bug tree-optimization/105769] [12/13/14/15 Regression] program segmentation fault with -ftree-vectorize and nested lambdas
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105769 --- Comment #22 from Andrew Pinski --- Created attachment 59281 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59281&action=edit Slightly more reduced Removed iostream. Still need to remove the std::function.
[Bug c++/116960] ICE: Error reporting routines re-entered
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116960 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed||2024-10-03 --- Comment #2 from Andrew Pinski --- .
[Bug c++/116960] ICE: Error reporting routines re-entered
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116960
Andrew Pinski changed:
What|Removed |Added
Keywords||c++-lambda
Blocks||107430
--- Comment #1 from Andrew Pinski ---
>but should just error
Actually it should just warn.
Reduced testcase:
```
template
using Foo = decltype([](auto) { return 0; }(0));
template
Foo<[] {}> foo() {}
auto t = foo();
```
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107430
[Bug 107430] [meta-bug] lambda in decltype
[Bug tree-optimization/105769] [12/13/14/15 Regression] program segmentation fault with -ftree-vectorize and nested lambdas
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105769 --- Comment #21 from Andrew Pinski --- Created attachment 59280 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59280&action=edit Patch which fixes it This is the patch which is on top of https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664419.html .
[Bug tree-optimization/105769] [12/13/14/15 Regression] program segmentation fault with -ftree-vectorize and nested lambdas
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105769 Andrew Pinski changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org --- Comment #20 from Andrew Pinski --- Note my patch https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664419.html does not work as it does not track addresses via vector types. But that might be an easy change, that is change INTEGRAL_TYPE_P to ANY_INTEGRAL_TYPE_P and it might start working. Let me see if that does help.
[Bug bootstrap/116951] Use -D_GLIBCXX_ASSERTIONS for --enable-checking=yes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116951 --- Comment #6 from Andrew Pinski --- (In reply to Jonathan Wakely from comment #5) > Not "stl" though please. > > STL != the C++ standard library Sorry bad habit. maybe stdcxxcontainers instead since most (if not all) is dealing with the containers in the C++ standard library?
[Bug driver/116957] Creation of pre-compiled header (-x c-header, -x c++-header) confused by linker options (eg -Wl,-g)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116957 Andrew Pinski changed: What|Removed |Added Resolution|--- |DUPLICATE Status|UNCONFIRMED |RESOLVED --- Comment #2 from Andrew Pinski --- This is basically a dup of bug 17001. *** This bug has been marked as a duplicate of bug 17001 ***
[Bug driver/17001] Linker option -Wl,foo,bar causes the driver to behave unintuitively for no input files
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17001 Andrew Pinski changed: What|Removed |Added CC||earl_chew at yahoo dot com --- Comment #3 from Andrew Pinski --- *** Bug 116957 has been marked as a duplicate of this bug. ***
[Bug driver/17001] Linker option -Wl,foo,bar causes the driver to behave unintuitively for no input files
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17001 Andrew Pinski changed: What|Removed |Added CC||bitmap at pan dot homelinux.com --- Comment #2 from Andrew Pinski --- *** Bug 21055 has been marked as a duplicate of this bug. ***
[Bug driver/21055] Option -Wl,-wrap when no input file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21055 Andrew Pinski changed: What|Removed |Added Resolution|INVALID |DUPLICATE --- Comment #4 from Andrew Pinski --- Dup. *** This bug has been marked as a duplicate of bug 17001 ***
[Bug libstdc++/116958] std::views::transform loses track of the range size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116958 Andrew Pinski changed: What|Removed |Added Ever confirmed|0 |1 Status|UNCONFIRMED |NEW
[Bug libstdc++/116958] std::views::transform loses track of the range size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116958 Andrew Pinski changed: What|Removed |Added Component|c++ |libstdc++ --- Comment #11 from Andrew Pinski --- (In reply to Andrew Pinski from comment #9) > Note I think the fornt-end is producing some odd code here: > return * = ... > > And that is also confusing some of the optimizers. Ok, I misread the IR dump because it was not obvious the default definition of _2 comes from the retval. Without -all turned on the dump we don't get: struct vectorD.98296 & _2(D) = ; and that had confused me.
[Bug c++/116958] std::views::transform loses track of the range size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116958 --- Comment #9 from Andrew Pinski --- Note I think the fornt-end is producing some odd code here: return * = ... And that is also confusing some of the optimizers.
[Bug c++/116958] std::views::transform loses track of the range size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116958
--- Comment #6 from Andrew Pinski ---
;; Function
std::ranges::views::__adaptor::_Partial
>::operator()
>, std::ranges::transform_view, std::_Bind_front,
int> > >(this
std::ranges::views::__adaptor::_Partial
>&&, std::ranges::transform_view,
std::_Bind_front, int> >&&):: [with
auto:36 = {}] (null)
;; enabled by -tree-original
{
struct transform_view & __r [value-expr: ((const struct ._anon_174 *)
__closure)->r];
struct transform_view & __r [value-expr: ((const struct ._anon_174 *)
__closure)->r];
< = TARGET_EXPR
(struct transform_view &) __r >>;
}
[Bug c++/116958] std::views::transform loses track of the range size
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116958
Andrew Pinski changed:
What|Removed |Added
Component|libstdc++ |c++
Status|ASSIGNED|UNCONFIRMED
Target Milestone|15.0|---
Last reconfirmed|2024-10-03 00:00:00 |
Assignee|redi at gcc dot gnu.org|unassigned at gcc dot
gnu.org
Ever confirmed|1 |0
Depends on|111055 |
--- Comment #5 from Andrew Pinski ---
There is some undefined code going on:
struct vector & _2(D);
retvalptr.184_10 = _2(D);
Comes from:
struct vector
std::ranges::views::__adaptor::_Partial
>::operator()
>, std::ranges::transform_view, std::_Bind_front,
int> > >(this
std::ranges::views::__adaptor::_Partial
>&&, std::ranges::transform_view,
std::_Bind_front, int> >&&)operator()<> (const struct ._anon_174 * const __closure)
{
struct _To2 D.105895;
struct transform_view & _1;
struct vector & _4(D);
:
_1 = __closure_3(D)->r;
*_4(D) =
std::ranges::__detail::_To2::operator(),
std::_Bind_front, int> > > (&D.105895, _1); [return slot
optimization]
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111055
[Bug 111055] [C++23] Implement P1206R7, Conversions from ranges to containers
[Bug other/116948] bootstrap-ubsan should set UBSAN_OPTIONS to abort on error
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116948 --- Comment #3 from Andrew Pinski --- At the very least there should be a parsing tool for the log to extract the failures. This will fix the ci issue really and then it is up to the ci to keep track if things change.
[Bug target/116927] [14/15 Regression] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with -fnon-call-exceptions -fno-delete-dead-exceptions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 Andrew Pinski changed: What|Removed |Added Known to fail|15.0| Known to work||15.0 --- Comment #8 from Andrew Pinski --- Fixed on the trunk will backport in a few weeks.
[Bug bootstrap/116951] Use -D_GLIBCXX_ASSERTIONS for --enable-checking=yes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116951 --- Comment #3 from Andrew Pinski --- Maybe add a new level for checking which can be later on included in yes. At least then it can easily enabled and even enabled seperately from others. E.g. someone could do even --enable-checking=release,stl
[Bug c++/116952] Error on lambda NTTP argument to type constraint in template parameter list of generic lambda
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116952
--- Comment #2 from Andrew Pinski ---
Note even this works:
```
template
concept A = true;
constexpr auto t = [] {};
auto b = []> {};
```
[Bug c++/116952] Error on lambda NTTP argument to type constraint in template parameter list of generic lambda
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116952
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
||a/show_bug.cgi?id=99478
Last reconfirmed||2024-10-03
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #1 from Andrew Pinski ---
Confirmed.
>From the parser.cc:
if (cxx_dialect >= cxx20)
{
/* C++20 allows lambdas in unevaluated context, but one in the type of a
non-type parameter is nonsensical.
Distinguish a lambda in the parameter type from a lambda in the
default argument by looking at local_variables_forbidden_p, which is
only set in default arguments. */
if (processing_template_parmlist && !parser->local_variables_forbidden_p)
{
error_at (token->location,
"lambda-expression in template parameter type");
token->error_reported = true;
ok = false;
}
}
"one in the type of a non-type parameter is nonsensical." Looks like this
forgot about concepts.
[Bug middle-end/110141] [12/13/14/15 Regression] Wrong code at -O2 on x86_64-linux-gnu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110141 Andrew Pinski changed: What|Removed |Added Resolution|--- |FIXED Target Milestone|12.5|12.4 Status|NEW |RESOLVED --- Comment #6 from Andrew Pinski --- # g_45 = PHI [(void *)&e + 2B](5)> # a_44 = PHI # g__lsm0.15_59 = PHI pretmp_58 = MEM[(short int *)g_45 + 2B]; Fixed by the patch which fixed PR 111422.
[Bug middle-end/109967] [12/13/14/15 Regression] Wrong code at -O2 on x86_64-linux-gnu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109967
Andrew Pinski changed:
What|Removed |Added
Status|NEW |RESOLVED
See Also||https://gcc.gnu.org/bugzill
||a/show_bug.cgi?id=111422
Target Milestone|12.5|11.5
Resolution|--- |FIXED
--- Comment #12 from Andrew Pinski ---
This was fixed by the same patch which fixed PR 111422.
ivtmp.19_7 = (unsigned long) &g;
...
[local count: 89482957]:
g ={v} {CLOBBER(eol)};
_51 = e_16 + -1;
f[_51] = 1;
[local count: 447307436]:
# d_36 = PHI
# e_37 = PHI
# ivtmp.14_28 = PHI
...
(same BB):
# ivtmp.14_28 = PHI
...
MEM[(char *)_55] = _3;
So we now know that g is alive at the same time f is alive so we know they
conflict.
[Bug tree-optimization/116950] IVopts missed unification of duplicate IVs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116950 Andrew Pinski changed: What|Removed |Added Severity|normal |enhancement CC||pinskia at gcc dot gnu.org
[Bug tree-optimization/116950] IVopts missed unification of duplicate IVs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116950 --- Comment #1 from Andrew Pinski --- > p.s. even though -ffinite-loops seems to be default at -O2 It is enabled for C++ yes but NOT C by default. That might be the difference you saw when reducing the code.
[Bug tree-optimization/116949] New: walk_stmt_load_store_addr_ops has extra code to handle comparisons in there
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116949
Bug ID: 116949
Summary: walk_stmt_load_store_addr_ops has extra code to handle
comparisons in there
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: internal-improvement
Severity: enhancement
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
/* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison
tree with two operands. */
else if (i == 1 && COMPARISON_CLASS_P (op))
{
if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR)
ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0),
0), op, data);
if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR)
ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1),
0), op, data);
}
I am 99% sure this is now dead code.
[Bug tree-optimization/111276] rewrite_to_defined_overflow rewrites already defined code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111276 --- Comment #6 from Andrew Pinski --- So the reason why the patch for PR111422 used to work is because before we had: _43 = _42 + 18446744073709551615; _44 = &g + _43; *_44 = 8; But with the change here we get: _9 = (unsigned long) &g; _84 = _9 + 18446744073709551615; _11 = _42 + _84; _44 = (signed char *) _11; Before we walked to _44 but not back further so in the new case we don't look at _9. I wonder if we could get a case which failed before; though maybe we don't since we canonicalize `(a ptr+ b) ptr+ c` into `a ptr+ (b + c)`.
[Bug lto/116946] LTO gets confused about code path and incorrectly triggers build-time assertion
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116946 Andrew Pinski changed: What|Removed |Added See Also||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=89029 --- Comment #3 from Andrew Pinski --- Plus this is an almost duplicate version of PR 89029 (where there was no LTO involved either).
[Bug lto/105727] __builtin_constant_p expansion in LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105727 Andrew Pinski changed: What|Removed |Added CC||jwerner at chromium dot org --- Comment #17 from Andrew Pinski --- *** Bug 116946 has been marked as a duplicate of this bug. ***
[Bug lto/116946] LTO gets confused about code path and incorrectly triggers build-time assertion
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116946 Andrew Pinski changed: What|Removed |Added Resolution|--- |DUPLICATE Status|UNCONFIRMED |RESOLVED --- Comment #2 from Andrew Pinski --- See PR 105727 and maybe others. *** This bug has been marked as a duplicate of bug 105727 ***
[Bug lto/116946] LTO gets confused about code path and incorrectly triggers build-time assertion
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116946 --- Comment #1 from Andrew Pinski --- IIRC you can't use __builtin_constant_p in this way ever even without LTO.
[Bug libstdc++/116944] [15 Regression] 17_intro/headers/c++201[14]/parallel_mode.cc fails on aarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116944 Andrew Pinski changed: What|Removed |Added Summary|[15 Regression] |[15 Regression] |17_intro/headers/c++2011/pa |17_intro/headers/c++201[14] |rallel_mode.cc fails on |/parallel_mode.cc fails on |aarch64 |aarch64 --- Comment #1 from Andrew Pinski --- 17_intro/headers/c++2014/parallel_mode.cc fails in a similar fashion.
[Bug c++/116943] wrong(?) indication of specialization after (implicit) instantiation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116943 --- Comment #1 from Andrew Pinski --- clang, MSVC and EDG all reject the code for the same reason.
[Bug libstdc++/116944] [15 Regression] 17_intro/headers/c++2011/parallel_mode.cc fails on aarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116944 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |15.0
[Bug libstdc++/116944] New: [15 Regression] 17_intro/headers/c++2011/parallel_mode.cc fails on aarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116944 Bug ID: 116944 Summary: [15 Regression] 17_intro/headers/c++2011/parallel_mode.cc fails on aarch64 Product: gcc Version: 15.0 Status: UNCONFIRMED Keywords: testsuite-fail Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org CC: redi at gcc dot gnu.org Target Milestone: --- Target: aarch64-linux-gnu We get: ``` In file included from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/parallel/algobase.h:40,^M from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/bits/stl_algobase.h:2324,^M from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/algorithm:62,^M from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/aarch64-linux-gnu/bits/stdc++.h:51,^M from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/aarch64-linux-gnu/bits/extc++.h:32,^M from /home/apinski/src/upstream-cross-aarch64/gcc/libstdc++-v3/testsuite/17_intro/headers/c++2011/parallel_mode.cc:24:^M /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/parallel/base.h:157: warning: 'template struct std::binary_function' is deprecated [-Wdeprecated-declarations]^M In file included from /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/parallel/base.h:36:^M /home/apinski/src/upstream-cross-aarch64/gcc/objdir-stage2/aarch64-linux-gnu/libstdc++-v3/include/bits/stl_function.h:131: note: declared here^M ``` This is with r15-4033 .
[Bug target/116927] [14/15 Regression] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with -fnon-call-exceptions -fno-delete-dead-exceptions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 --- Comment #6 from Andrew Pinski --- Created attachment 59271 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59271&action=edit Patch which I am testing
[Bug target/116940] [15 Regression] wrong code with -O -mavx512vl and vector compare and negation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116940 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |NEW Target Milestone|--- |15.0 Last reconfirmed||2024-10-02 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski --- Confirmed. Looks related to the removal of the VCONDU patterns.
[Bug target/116927] [14/15 Regression] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with -fnon-call-exceptions -fno-delete-dead-exceptions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 Andrew Pinski changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org --- Comment #5 from Andrew Pinski --- Mine should be easy to fix as I already gave the outline of what needs to be done.
[Bug lto/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 Andrew Pinski changed: What|Removed |Added Component|c++ |lto Keywords|c++-lambda | --- Comment #25 from Andrew Pinski --- https://gcc.gnu.org/pipermail/gcc-patches/2013-June/364471.html looks like it introduces that line.
[Bug other/116936] [UBSAN] gcc/diagnostic.cc: null pointer passed as argument
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116936
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2024-10-02
Ever confirmed|0 |1
CC||dmalcolm at gcc dot gnu.org
--- Comment #3 from Andrew Pinski ---
Confirmed.
```
int
diagnostic_option_classifier::pch_save (FILE *f)
{
unsigned int lengths[2] = { m_classification_history.length (),
m_push_list.length () };
if (fwrite (lengths, sizeof (lengths), 1, f) != 1
|| fwrite (m_classification_history.address (),
sizeof (diagnostic_classification_change_t),
lengths[0], f) != lengths[0]
|| fwrite (m_push_list.address (), sizeof (int),
lengths[1], f) != lengths[1])
return -1;
return 0;
}
```
m_classification_history.address can be a null ptr if the length was 0.
Maybe this is a minor issue but still should be fixed.
[Bug tree-optimization/116939] rewrite_to_defined_overflow/gimple_with_undefined_signed_overflow should also rewrite VCEs (from/to integral types) into casts
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116939 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Ever confirmed|0 |1 Last reconfirmed||2024-10-02 --- Comment #1 from Andrew Pinski --- .
[Bug tree-optimization/116939] New: rewrite_to_defined_overflow/gimple_with_undefined_signed_overflow should also rewrite VCEs (from/to integral types) into casts
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116939 Bug ID: 116939 Summary: rewrite_to_defined_overflow/gimple_with_undefined_sign ed_overflow should also rewrite VCEs (from/to integral types) into casts Product: gcc Version: 15.0 Status: UNCONFIRMED Keywords: internal-improvement Severity: enhancement Priority: P3 Component: tree-optimization Assignee: pinskia at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Blocks: 116938 Target Milestone: --- as mentioned in https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664260.html and as implemented in phiopt's move_stmt . Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116938 [Bug 116938] move_stmt in phiopt should use rewrite_to_defined_overflow
[Bug tree-optimization/116938] move_stmt in phiopt should use rewrite_to_defined_overflow
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116938 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2024-10-02 Ever confirmed|0 |1 Status|UNCONFIRMED |ASSIGNED --- Comment #1 from Andrew Pinski --- .
[Bug tree-optimization/116938] New: move_stmt in phiopt should use rewrite_to_defined_overflow
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116938 Bug ID: 116938 Summary: move_stmt in phiopt should use rewrite_to_defined_overflow Product: gcc Version: 15.0 Status: UNCONFIRMED Keywords: internal-improvement Severity: enhancement Priority: P3 Component: tree-optimization Assignee: pinskia at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Depends on: 111276 Target Milestone: --- As mentioned in https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664260.html . Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111276 [Bug 111276] rewrite_to_defined_overflow rewrites already defined code
[Bug tree-optimization/116937] New: Look better handling of phis in gsi_remove (via remove_phi_node)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116937 Bug ID: 116937 Summary: Look better handling of phis in gsi_remove (via remove_phi_node) Product: gcc Version: 15.0 Status: UNCONFIRMED Keywords: internal-improvement Severity: enhancement Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Target Milestone: --- As mentioned in the review https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664272.html : "maybe we can work towards removing remove_phi_node and make PHI node handling in gsi_* better"
[Bug tree-optimization/116098] [14 Regression] _Bool value from tagged union is incorrect when built with optimization since r14-1597-g64d90d06d2db43
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116098 Andrew Pinski changed: What|Removed |Added Summary|[14/15 Regression] _Bool|[14 Regression] _Bool value |value from tagged union is |from tagged union is |incorrect when built with |incorrect when built with |optimization since |optimization since |r14-1597-g64d90d06d2db43|r14-1597-g64d90d06d2db43 --- Comment #24 from Andrew Pinski --- Fixed fully on the trunk. Will wait a week or 2 before backporting it.
[Bug c++/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 --- Comment #23 from Andrew Pinski --- Created attachment 59266 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59266&action=edit A different reduced testcase ` -std=c++20 --param ggc-min-expand=0 --param ggc-min-heapsize=0 -O3 -flto` This one requires =0/=0 but I can't reproduce it locally with =0, only =1.
[Bug lto/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 --- Comment #22 from Andrew Pinski --- (In reply to Eric Botcazou from comment #21) > > So the TREE_BLOCK (expr) has been free'd. > > Right. The TREE_BLOCK for an expression is: > > if (IS_EXPR_CODE_CLASS (c)) > return LOCATION_BLOCK (t->exp.locus); > > and "locus" is just an integer so the GC marking probably stops there. That makes me think the location's blocks are not being copied correctly when it comes to templates. But I could be wrong.
[Bug tree-optimization/116922] [12/13/14 Regression] ICE: in op_iter_init, at ssa-iterators.h:604 with -Ofast
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116922 Andrew Pinski changed: What|Removed |Added Known to work||15.0 Summary|[12/13/14/15 Regression]|[12/13/14 Regression] ICE: |ICE: in op_iter_init, at|in op_iter_init, at |ssa-iterators.h:604 with|ssa-iterators.h:604 with |-Ofast |-Ofast Known to fail|15.0| --- Comment #5 from Andrew Pinski --- Fixed on the trunk so far.
[Bug ada/116933] Ada FE incompatible with -ftrivial-auto-var-init=zero (__builtin_clear_padding not folded)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116933
--- Comment #3 from Andrew Pinski ---
(In reply to Sam James from comment #2)
> I think this is a secondary problem (tell me if I should file a new PR), but
> we blow up w/ DEFERRED_INIT at -O1:
> ```
> gnatlink hello.ali -ftrivial-auto-var-init=zero -O1
> /usr/lib/gcc/x86_64-pc-linux-gnu/15/adainclude/s-secsta.ads: In function
> ‘system.secondary_stack.ss_stackIP’:
> /usr/lib/gcc/x86_64-pc-linux-gnu/15/adainclude/s-secsta.ads:279:9: error:
> location references block not in block tree
> &"_init"[0]
> SR.41_9 = .DEFERRED_INIT (8, 2, &"_init"[0]);
> during GIMPLE pass: einline
> +===GNAT BUG DETECTED==+
> | 15.0.0 20241001 (experimental) f72b1a44ff582041b02d5abe0a6c8556057e6183
> (x86_64-pc-linux-gnu) GCC error:|
> | verify_gimple failed |
> | Error detected around
> /usr/lib/gcc/x86_64-pc-linux-gnu/15/adainclude/s-secsta.ads:279:9|
> | Compiling /home/sam/build/ada/b~hello.adb|
> ```
That part should be easy to fix.
location_t loc = EXPR_LOCATION (decl);
...
if (DECL_NAME (decl))
decl_name = build_string_literal (DECL_NAME (decl));
else
{
char decl_name_anonymous[3 + (HOST_BITS_PER_INT + 2) / 3];
sprintf (decl_name_anonymous, "D.%u", DECL_UID (decl));
decl_name = build_string_literal (decl_name_anonymous);
}
build_string_literal should take a loc and the loc gets passed to build1 for
the ADDR_EXPR.
[Bug ada/116933] Ada FE incompatible with -ftrivial-auto-var-init=zero (__builtin_clear_padding not folded)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116933 Andrew Pinski changed: What|Removed |Added Keywords||build, link-failure CC||pinskia at gcc dot gnu.org --- Comment #1 from Andrew Pinski --- Thinking about this maybe isel should do the lowering if it was not done by then. I wonder it works for other front-ends at -O0 in the first place ...
[Bug c++/116931] False "duplicate 'const'" errors when typedefs used on pointer types in function definitions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116931 --- Comment #3 from Andrew Pinski --- (In reply to Matt Bentley from comment #2) > Enlighten me here, how is this invalid C++ code? > Because a typedef should mean that int_pointer is int *, so it should work, > right? > If it's invalid merely because it's typedef'd instead of verbatim, it's a > language defect. It is invalid the same way `const int const` is a duplicate const qualifier.
[Bug c++/116931] False "duplicate 'const'" errors when typedefs used on pointer types in function definitions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116931 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski --- ` const int_pointer const` is a duplicate const. because int_pointer is one identifier, the const could go before or after to mean the same thing. clang produces a warning rather than an error: :3:37: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier] But it is still invalid C++ code.
[Bug driver/116930] 'gcc -v' vs 'gcc --version' have differing formats
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116930 --- Comment #2 from Andrew Pinski --- Part of that might be because you use --with-pkgversion= .
[Bug lto/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907
--- Comment #20 from Andrew Pinski ---
#2 0x01271d97 in DFS::DFS_write_tree_body (this=0x7fffd3c0,
ob=0x3f52620, expr=, expr_state=0x3f76060,
ref_p=true) at /home/apinski/src/upstream-gcc/gcc/gcc/lto-streamer-out.cc:1104
1104 DFS_follow_tree_edge (TREE_BLOCK (expr));
(gdb) l
1099
1100 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1101{
1102 for (int i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
1103DFS_follow_tree_edge (TREE_OPERAND (expr, i));
1104 DFS_follow_tree_edge (TREE_BLOCK (expr));
1105}
1106
1107 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1108{
(gdb) p debug_tree(expr)
unit-size
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffe3d8e888 fields context
pointer_to_this reference_to_this
>
unsigned DI
size
unit-size
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffe3d92f18>
arg:0
arg:0
used QI t.cc:106557:16 size
unit-size
align:8 warn_if_not_align:0 context abstract_origin chain
>
arg:1
used nonlocal decl_3 QI t.cc:77215:51 size unit-size
align:8 warn_if_not_align:0 offset_align 128 decl_not_flexarray: 0
offset
bit-offset context
>
t.cc:77223:20 start: t.cc:77223:12 finish: t.cc:77223:23>
t.cc:77223:24 start: t.cc:77223:12 finish: t.cc:77223:51>
$2 = void
(gdb) p debug_generic_expr(expr)
&factory.func
So the TREE_BLOCK (expr) has been free'd.
The original code:
```
template
decltype(auto) operator| (Range&& range, ViewFactory factory)
{
return factory.func(std::forward(range));
}
```
Which is still in the reduced testcase:
```
template
auto operator|(Range range, Func factory) {
return factory.func(range);
}
```
[Bug lto/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 Andrew Pinski changed: What|Removed |Added Component|ipa |lto --- Comment #19 from Andrew Pinski --- > during IPA pass: modref Note this just happens to be the last pass that was run right before the writing out of the LTO summaries. So it is misleading some folks thinking it is related to modref. I also have not looked to see if we could fix that though.
[Bug ipa/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 --- Comment #18 from Andrew Pinski --- So this gc freed memory is somewhere in the BLOCK tree. I have some ideas on how to go and debug this but I won't be able to get to that until later tonight.
[Bug ipa/116907] [14/15 regression] ICE when building kakoune-2024.05.18 with LTO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 --- Comment #17 from Andrew Pinski --- Note it worked with r15-1075-g43530bc40b1d04 but I have no idea if it was just not exposed at that point or not.
[Bug tree-optimization/116922] [12/13/14/15 Regression] ICE: in op_iter_init, at ssa-iterators.h:604 with -Ofast
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116922 --- Comment #3 from Andrew Pinski --- Created attachment 59261 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59261&action=edit Patch which seems to work and am testing
[Bug tree-optimization/116922] [12/13/14/15 Regression] ICE: in op_iter_init, at ssa-iterators.h:604 with -Ofast
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116922 --- Comment #2 from Andrew Pinski --- Created attachment 59260 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59260&action=edit Testcase without vectors
[Bug c++/116928] Error on NTTP with '>' in braced default
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116928 --- Comment #1 from Andrew Pinski --- EDG rejects it in a similar fashion as GCC: "", line 2: error: expected an expression template 0 }> ^
[Bug target/116927] [14/15 Regression] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with -fnon-call-exceptions -fno-delete-dead-exceptions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 --- Comment #4 from Andrew Pinski --- early_ra::is_dead_insn checks side_effects_p but deletable_insn_p (dce.cc) has an extra check: /* Don't delete insns that may throw if we cannot do so. */ if (!(cfun->can_delete_dead_exceptions && can_alter_cfg) && !insn_nothrow_p (insn)) return false; I think is_dead_insn should also have the following: ``` if (cfun->can_delete_dead_exceptions && !insn_nothrow_p (insn)) return false; ``` That is if -fno-delete-dead-exceptions is there and the insn can throw, the insn is not dead.
[Bug middle-end/116920] GCC should warn about fall through from a case to a default (without any expressions)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116920 Andrew Pinski changed: What|Removed |Added Component|c |middle-end Ever confirmed|0 |1 Summary|GCC should warn about |GCC should warn about fall |redundant case around |through from a case to a |default in switch |default (without any ||expressions) Status|UNCONFIRMED |NEW Last reconfirmed||2024-10-01 --- Comment #2 from Andrew Pinski --- I suspect this might be easy to handle with the other warnings dealing with fall through. That is this is a special case of fall through were we want to warn when there is no statements in between.
[Bug tree-optimization/116922] [12/13/14/15 Regression] ICE: in op_iter_init, at ssa-iterators.h:604 with -Ofast
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116922
Andrew Pinski changed:
What|Removed |Added
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot
gnu.org
Keywords|needs-bisection |
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed||2024-10-01
--- Comment #1 from Andrew Pinski ---
Deleting v_17 = PHI <{ 0.0, 0.0, 0.0, 0.0 }(4), v_19(6)>
static void
remove_unused_var (tree var)
{
gimple *stmt = SSA_NAME_DEF_STMT (var);
if (dump_file && (dump_flags & TDF_DETAILS))
{
fprintf (dump_file, "Deleting ");
print_gimple_stmt (dump_file, stmt, 0, TDF_SLIM);
}
gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
gsi_remove (&gsi, true);
release_defs (stmt);
}
That is wrong for phis.
It should have been something like:
if (gimple_code (t) == GIMPLE_PHI)
{
remove_phi_node (&gsi, true);
phiremoved++;
}
else
{
unlink_stmt_vdef (t);
gsi_remove (&gsi, true);
release_defs (t);
stmtremoved++;
}
remove_unused_var was added in GCC 6 though; r6-4109-g6a75d560c85508 .
Though backprop didn't start doing something for this testcase until GCC 10.
This should be easy to fix.
I am going to do 2 patches, one to fix remove_unused_var to use the correct way
of removing the phis. And then secondary change the code to use
simple_dce_from_worklist (if I get a chance).
[Bug target/116927] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with fnon-call-exceptions -fharden-control-flow-redundancy -fno-delete-dead-e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2024-10-01 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski --- > deleting insn with uid = 22. Hmm, it should not have been removed due to `-fno-delete-dead-exceptions`.
[Bug target/116927] [14/15 Regression] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with -fnon-call-exceptions -fno-delete-dead-exceptions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |14.3 Summary|during RTL pass: early_ra: |[14/15 Regression] during |ICE: verify_flow_info |RTL pass: early_ra: ICE: |failed: missing |verify_flow_info failed: |REG_EH_REGION note at the |missing REG_EH_REGION note |end of bb 4 with|at the end of bb 4 with |fnon-call-exceptions|-fnon-call-exceptions |-fharden-control-flow-redun |-fno-delete-dead-exceptions |dancy | |-fno-delete-dead-exceptions | CC||rsandifo at gcc dot gnu.org Known to work||13.3.0 --- Comment #3 from Andrew Pinski --- My testcase worked in GCC 13.x (-fharden-control-flow-redundancy is new in GCC 14 but you just need an internal exceptions to get the ICE).
[Bug target/116927] during RTL pass: early_ra: ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 4 with fnon-call-exceptions -fharden-control-flow-redundancy -fno-delete-dead-e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116927 --- Comment #2 from Andrew Pinski --- Created attachment 59258 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59258&action=edit Better testcase `-O2 -fchecking -fnon-call-exceptions -fno-delete-dead-exceptions` is enough with this C++ one.
[Bug target/116925] [15 regression] ICE when building newton-3.14 with -march=znver2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116925 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2024-10-01 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #4 from Andrew Pinski --- .
[Bug target/116925] [15 regression] ICE when building newton-3.14 with -march=znver2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116925 --- Comment #3 from Andrew Pinski --- Created attachment 59257 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59257&action=edit cleaned up reduced testcase `-mavx -O2 -ffloat-store` is enough to reproduce the issue.
[Bug tree-optimization/116098] [14/15 Regression] _Bool value from tagged union is incorrect when built with optimization since r14-1597-g64d90d06d2db43
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116098 --- Comment #22 from Andrew Pinski --- Created attachment 59255 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59255&action=edit C++ testcase
[Bug tree-optimization/116098] [14/15 Regression] _Bool value from tagged union is incorrect when built with optimization since r14-1597-g64d90d06d2db43
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116098 --- Comment #21 from Andrew Pinski --- Created attachment 59254 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59254&action=edit Slightly better testcase Modified testcase which still depends on SRA. But I will move over to using bitcast in a few.
[Bug target/116925] [15 regression] ICE when building newton-3.14 with -march=znver2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116925 --- Comment #1 from Andrew Pinski --- Maybe r15-1738-g09737d9605521df9232d9990006c44955064f44e .
[Bug target/116925] [15 regression] ICE when building newton-3.14 with -march=znver2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116925 Andrew Pinski changed: What|Removed |Added Keywords||ice-on-valid-code Target Milestone|--- |15.0 Target||x86_64-linux-gnu
[Bug tree-optimization/116098] [14/15 Regression] _Bool value from tagged union is incorrect when built with optimization since r14-1597-g64d90d06d2db43
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116098 --- Comment #20 from Andrew Pinski --- (In reply to Andrew Pinski from comment #19) > Created attachment 59252 [details] > Patch which I am testing > > This is the simple patch which I mentioned in comment #18 . I still need to > add testcases. I forgot to mention it does fix the testcase in comment #15. ``` rewriting stmt with undefined VCE. _4 = VIEW_CONVERT_EXPR<_Bool>(value$8_11); ... _4 = (_Bool) value$8_11; ```
[Bug tree-optimization/116098] [14/15 Regression] _Bool value from tagged union is incorrect when built with optimization since r14-1597-g64d90d06d2db43
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116098 --- Comment #19 from Andrew Pinski --- Created attachment 59252 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59252&action=edit Patch which I am testing This is the simple patch which I mentioned in comment #18 . I still need to add testcases.
[Bug middle-end/116891] [12/13/14/15 Regression] invalid optimization of -fma(-x,x,-z) when -03 and -frounding-math are used
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116891 --- Comment #7 from Andrew Pinski --- (In reply to Walter Mascarenhas from comment #6) > Hi Andrew, > >The proper optimization in this case would be to use the instruction > vfnmsub132pd followed by a change of sign. It could be something like That is exactly what I Said just using internals of gcc. Note bugzilla is usually a mix of both user facing information and internals of what needs to be done inside gcc.
[Bug c++/116909] Does g++ define the behavior for an "array" manually created with a linker script?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116909 --- Comment #4 from Andrew Pinski --- > Even after reading the other threads, I'm not sure how portable It works on all targets that gcc supports because r is a generic inline-asm constraint.
[Bug ipa/116908] ICE (invalid calls_comdat_local flag) with -O1 compiling webkit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116908 --- Comment #4 from Andrew Pinski --- `-std=c++20 -O1 ` is enough for the reduced testcase even on x86_64
[Bug c++/116909] Does g++ define the behavior for an "array" manually created with a linker script?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116909 --- Comment #5 from Andrew Pinski --- https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Simple-Constraints.html Documents the r constraints. https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Extended-Asm.html#OutputOperands Documents the `+`.
[Bug ipa/116908] ICE (invalid calls_comdat_local flag) with -O1 compiling webkit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116908 Andrew Pinski changed: What|Removed |Added Attachment #59248|0 |1 is obsolete|| --- Comment #5 from Andrew Pinski --- Created attachment 59250 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59250&action=edit New reduced `-std=c++2a -O1 -fchecking` fails all the way to GCC 10, fails to compile in GCC 9.x (due to some C++20ism still)
[Bug ipa/116908] ICE (invalid calls_comdat_local flag) with -O1 compiling webkit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116908 --- Comment #3 from Andrew Pinski --- Created attachment 59248 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59248&action=edit Reduced as I can get it today
[Bug tree-optimization/116890] Heurstic for factoring out convert with one side constant should also handle when it is a CMP
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116890 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |15.0 Resolution|--- |FIXED Status|ASSIGNED|RESOLVED --- Comment #4 from Andrew Pinski --- Fixed.
[Bug ipa/116908] [12/13/14/15 Regression] ICE (invalid calls_comdat_local flag) with -O1 compiling webkit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116908 Andrew Pinski changed: What|Removed |Added Known to fail||10.1.0 Target Milestone|--- |12.5 Known to work||9.1.0, 9.5.0 Summary|ICE (invalid|[12/13/14/15 Regression] |calls_comdat_local flag)|ICE (invalid |with -O1 compiling webkit |calls_comdat_local flag) ||with -O1 compiling webkit
[Bug ipa/116908] ICE (invalid calls_comdat_local flag) with -O1 compiling webkit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116908 Andrew Pinski changed: What|Removed |Added Attachment #59250|0 |1 is obsolete|| --- Comment #6 from Andrew Pinski --- Created attachment 59251 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59251&action=edit new reduced Fails with `-O1 -fchecking` . Works in GCC 9.5.0 but fails 10+.
[Bug rtl-optimization/116915] [15 Regression] wrong code at -O{s,2,3} on x86_64-linux-gnu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116915
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Target Milestone|--- |15.0
Component|tree-optimization |rtl-optimization
CC||pinskia at gcc dot gnu.org
Last reconfirmed||2024-10-01
Summary|wrong code at -O{s,2,3} on |[15 Regression] wrong code
|x86_64-linux-gnu|at -O{s,2,3} on
||x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski ---
-fno-ext-dce fixes it.
[Bug middle-end/77964] [7 Regression] Linux kernel firmware loader miscompiled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77964 --- Comment #24 from Andrew Pinski --- (In reply to Jiri Slaby from comment #22) > (In reply to Andrew Pinski from comment #19) > > *** Bug 106939 has been marked as a duplicate of this bug. *** > > Provided that many duplicates (even nested -- see that bug too) -- everyone > expects this to work. Would it be possible for gcc to at least dump a > warning? Also see PR 116910 where I recommended we document the proper way of doing this too.
[Bug ipa/116907] [15 regression] ICE when building kakoune-2024.05.18 with LTO (modref)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907
Andrew Pinski changed:
What|Removed |Added
Keywords||needs-bisection
Known to fail||15.0
Known to work||14.2.0
--- Comment #9 from Andrew Pinski ---
Now I wonder if it is a front-end issue.
If I changed:
return TransformView{(range), 0};
to be:
return TransformView{(range), 0};
then it works but this should be the same thing.
[Bug ipa/116907] [15 regression] ICE when building kakoune-2024.05.18 with LTO (modref)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116907 --- Comment #8 from Andrew Pinski --- (In reply to Sam James from comment #7) > Under gdb, I get: > ``` > during IPA pass: modref > /tmp/b.ii:81:3: internal compiler error: tree code ‘ggc_freed’ is not > supported in LTO streams Something is definitely being freed when it is still in reference. After I finish reducing this other testcase let me see if I can reduce this one further.
