https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110955
Bug ID: 110955
Summary: SIGSEGV in
libgcc_s.so.1`classify_object_over_fdes+0x140 on
Solaris SPARC with GCC 13 runtime
Product: gcc
Version: 13.2.0
St
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110587
--- Comment #22 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:b66e613a1a8d5b8fc9d8b03f7b60260700acf833
commit r14-3095-gb66e613a1a8d5b8fc9d8b03f7b60260700acf833
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109893
--- Comment #2 from Andrew Pinski ---
# j_10 = PHI <0B(4), &e(6)>
...
_21 = j_10 == 0B;
_22 = j_10 == &e;
_23 = _21 | _22;
The only pass which is able to optmize the above is pre.
That is take:
```
int e;
void g();
int f(int a, int
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110131
--- Comment #5 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #4)
> So I have a VRP patch which gets us to:
/* If the value range is defined by more than one pair,
try to optimize to a singularity if either
the first
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110248
--- Comment #9 from CVS Commits ---
The master branch has been updated by Kewen Lin :
https://gcc.gnu.org/g:4a8e6fa8016f8daf184dec49f371ca71b1cb0f01
commit r14-3093-g4a8e6fa8016f8daf184dec49f371ca71b1cb0f01
Author: Kewen Lin
Date: Wed Aug 9
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110248
--- Comment #10 from CVS Commits ---
The master branch has been updated by Kewen Lin :
https://gcc.gnu.org/g:0412f0e374de1f66e20c407e0b519324af3fd5b6
commit r14-3094-g0412f0e374de1f66e20c407e0b519324af3fd5b6
Author: Kewen Lin
Date: Wed Aug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110248
--- Comment #8 from CVS Commits ---
The master branch has been updated by Kewen Lin :
https://gcc.gnu.org/g:165b1f6ad1d3969e2c23417797362d0528e65c79
commit r14-3092-g165b1f6ad1d3969e2c23417797362d0528e65c79
Author: Kewen Lin
Date: Wed Aug 9
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110131
Andrew Pinski changed:
What|Removed |Added
Status|NEW |ASSIGNED
Assignee|unassigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85316
Bug 85316 depends on bug 107822, which changed state.
Bug 107822 Summary: [13/14/14 Regression] Dead Code Elimination Regression at
-Os (trunk vs. 12.2.0)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107822
What|Removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107822
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |FIXED
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611
--- Comment #15 from Jiang An ---
(In reply to Arthur O'Dwyer from comment #11)
> @jwakely, I propose that this issue should be recategorized as a compiler
> bug. (And I'm also voting effectively "NAD" on LWG3967.)
Hmm... IMO given the current
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109684
--- Comment #14 from kargl at gcc dot gnu.org ---
(In reply to Paul Thomas from comment #13)
> (In reply to Steve Kargl from comment #12)
> > On Mon, Aug 07, 2023 at 10:04:54PM +, kargl at gcc dot gnu.org wrote:
> > >
> > > diff --git a/gcc/
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939
--- Comment #10 from Chenghui Pan ---
(In reply to Stefan Schulze Frielinghaus from comment #9)
> Thanks for the reproducer and sorry for the hassle.
>
> The normal form of a constant for a mode with fewer bits than in
> HOST_WIDE_INT is a sign
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110931
Andrew Pinski changed:
What|Removed |Added
Blocks||85316
--- Comment #4 from Andrew Pinski
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108360
--- Comment #11 from Andrew Pinski ---
I have a patch which gets us to:
```
short int b.2_1;
...
b.2_1 = b;
_2 = b.2_1 <= 0;
_4 = (char) _2;
f = _4;
f.5_5 = (unsigned char) _2;
_6 = f.5_5 << 4;
e = _6;
_19 = b.2_1 <= 0;
_7 =
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108397
--- Comment #6 from Andrew Pinski ---
I have a patch to fix the testcase in comment #2.
After that patch we have:
```
_1 = o_10(D) == 0;
_2 = (long long int) _1;
_3 = -_2;
t1_11 = (long long unsigned int) _3;
_4 = t1_11 == 18446744073
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110954
Andrew Pinski changed:
What|Removed |Added
Component|tree-optimization |middle-end
--- Comment #2 from Andrew P
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110954
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed||2023-08-09
CC|
&& ./a.out
18446744073670629653
Aborted (core dumped)
>$ /usr/bin/g++-11 -O0 test.cpp && ./a.out
1
gcc version 14.0.0 20230808 (20659be04c2749f9f47b085f1789eee0d145fb36)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109836
Eric Gallager changed:
What|Removed |Added
URL||https://gcc.gnu.org/piperma
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110953
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110953
--- Comment #2 from cqwrteur ---
Parameters
9+ 8 7 6 5 4 3 2 1
floating-point and __m128
stack XMM7 XMM6 XMM5 XMM4 XMM3 XMM2 XMM1 XMM0
__m256
stack YMM7 YMM6 YMM5 YMM4 YMM3 YMM2 YMM1 YMM0
__m512
stack ZMM7 ZMM6 ZMM5 ZMM4 ZM
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110953
--- Comment #1 from cqwrteur ---
TLDR:
floating-point and __m128
stack XMM8 XMM7 XMM6 XMM5 XMM4 XMM3 XMM2 XMM1 XMM0
__m256
stack YMM8 YMM7 YMM6 YMM5 YMM4 YMM3 YMM2 YMM1 YMM0
__m512
stack ZMM8 ZMM7 ZMM6 ZMM5 ZMM4 ZMM3 ZMM
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110953
Bug ID: 110953
Summary: Introducing the "wincall" Calling Convention for GCC
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compon
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108397
Andrew Pinski changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot
gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77432
--- Comment #8 from Eric Gallager ---
(In reply to David Malcolm from comment #7)
> > Not sure if these are dupes or not (would we want a non-analyzer
> > implementation of this warning?)
>
> Do we want a non-analyzer implementation of this warn
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87504
Eric Gallager changed:
What|Removed |Added
Resolution|--- |FIXED
Status|WAITING
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21824
Eric Gallager changed:
What|Removed |Added
Status|WAITING |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55656
--- Comment #10 from Eric Gallager ---
(In reply to Iain Sandoe from comment #9)
> (In reply to Eric Gallager from comment #8)
> > (In reply to Iain Sandoe from comment #7)
> > > fixed on master
> > > e.g.
> > > https://gcc.gnu.org/pipermail/gcc-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100457
Eric Gallager changed:
What|Removed |Added
Summary|[meta-bug] Enabling O2 |[meta-bug] Bugs relating to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110952
Bug ID: 110952
Summary: Allocator::pointer is required to be implicitly
convertible from and into a native pointer
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #11 from Alexander Monakov ---
(In reply to Alexander Monakov from comment #8)
> inline void mbedtls_put_unaligned_uint64(void *p, uint64_t x)
> {
> memcpy(p, &x, sizeof(x));
> }
>
>
> We deciding to not inline this, while inli
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |DUPLICATE
Status|UNCONFIRME
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100470
Andrew Pinski changed:
What|Removed |Added
CC||nikolasklauser at berlin dot de
--- Com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108397
--- Comment #4 from Andrew Pinski ---
Also:
```
int f(int a, int b)
{
int c = a == b;
c = -c;
return c <= -1;
}
```
At `-O2 -fwrapv` is not optimized at the gimple level but is at the RTL level
even.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611
--- Comment #13 from Arthur O'Dwyer ---
(In reply to Andrew Pinski from comment #12)
> I suspect this is a dup of bug 100470 then.
Yep, I agree. My previous comment was a longwinded version of jwakely's
https://gcc.gnu.org/bugzilla/show_bug.cgi
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108397
--- Comment #3 from Andrew Pinski ---
I have seen other bug reports having a similar issue too.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108397
--- Comment #2 from Andrew Pinski ---
I think the simple missed optimization here is:
```
int f2(int a)
{
if(a != -1 && a != 0)
__builtin_unreachable();
unsigned c = a;
if(c > 121212)
return 1;
return 0;
}
```
This should be optimi
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110951
--- Comment #1 from Edwin Lu ---
On rv32 newlib GCC 12 the issue is different and might be unrelated:
- ABI is incompatible with that of the selected emulation:
target emulation `elf64-littleriscv' does not match `elf32-littleriscv'
- ./20031
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611
--- Comment #12 from Andrew Pinski ---
I suspect this is a dup of bug 100470 then.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110951
Bug ID: 110951
Summary: [13/14] RISCV: rv32 newlib gcc.c-torture testsuite
fails with xgcc: fatal error: Cannot find suitable
multilib set for
'-march=rv32imafdc_z
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #10 from Alexander Monakov ---
Ah, the non-static inlines are intentional, the corresponding extern
declarations appear in library/platform_util.c. Sorry, I missed that file the
first time around.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611
Arthur O'Dwyer changed:
What|Removed |Added
CC||arthur.j.odwyer at gmail dot
com
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100482
--- Comment #3 from CVS Commits ---
The trunk branch has been updated by Jason Merrill :
https://gcc.gnu.org/g:a90bd3ea6d1ba27b15476f0a768d7952c6723420
commit r14-3087-ga90bd3ea6d1ba27b15476f0a768d7952c6723420
Author: Nathaniel Shead
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110938
--- Comment #4 from Richard Smith ---
Looks like the trait difference only happens if the templated constructor is
not deleted, but the ABI mismatch happens regardless. Possibly there are two
separate issues here?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110950
--- Comment #1 from Jeremy Bennett ---
Created attachment 55709
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55709&action=edit
Script to run the compilation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110950
Bug ID: 110950
Summary: RISC-V vector ICE in expand_const_vector
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110949
Bug ID: 110949
Summary: ((cast)cmp) - 1 should be tranformed into (cast)cmp`
where cmp` is the inverse of cmp
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Ke
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #9 from Alexander Monakov ---
(In reply to Alexander Monakov from comment #2)
> Note that inline functions in mbedtls/library/alignment.h all miss the
> 'static' qualifier, which affects inlining decisions, and looks like a
> mistake
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939
--- Comment #9 from Stefan Schulze Frielinghaus
---
Thanks for the reproducer and sorry for the hassle.
The normal form of a constant for a mode with fewer bits than in HOST_WIDE_INT
is a sign extended version of the original constant. This e
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110832
--- Comment #11 from CVS Commits ---
The master branch has been updated by Uros Bizjak :
https://gcc.gnu.org/g:ad5b757d99b5a121198b79a6a42c1f15ae86a190
commit r14-3085-gad5b757d99b5a121198b79a6a42c1f15ae86a190
Author: Uros Bizjak
Date: Tue
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #8 from Alexander Monakov ---
Why? There's no bswap here, in particular mbedtls_put_unaligned_uint64 is a
straightforward wrapper for memcpy:
inline void mbedtls_put_unaligned_uint64(void *p, uint64_t x)
{
memcpy(p, &x, sizeof(x
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110941
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed||2023-08-08
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110378
--- Comment #8 from Christophe Lyon ---
Created attachment 55707
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55707&action=edit
pr110378-1.C.083i.sra
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110378
Christophe Lyon changed:
What|Removed |Added
CC||clyon at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110860
Jonathan Wakely changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110862
Jonathan Wakely changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110917
Jonathan Wakely changed:
What|Removed |Added
Resolution|--- |FIXED
Status|ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110860
--- Comment #6 from CVS Commits ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
:
https://gcc.gnu.org/g:a059403794add2934961780662e320ba77798a7e
commit r13-7699-ga059403794add2934961780662e320ba77798a7e
Author: Jonathan Wake
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110917
--- Comment #5 from CVS Commits ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
:
https://gcc.gnu.org/g:0f0152a93d15b24ebc7f6c7455baaded6a63fb2e
commit r13-7698-g0f0152a93d15b24ebc7f6c7455baaded6a63fb2e
Author: Jonathan Wake
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110862
--- Comment #5 from CVS Commits ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
:
https://gcc.gnu.org/g:55eb7e92a60adfae43aaf58bb9c81050d39d82c9
commit r13-7697-g55eb7e92a60adfae43aaf58bb9c81050d39d82c9
Author: Jonathan Wake
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
Jonathan Wakely changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
Andrew Pinski changed:
What|Removed |Added
Depends on||92716
--- Comment #7 from Andrew Pinski
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94162
Arthur O'Dwyer changed:
What|Removed |Added
CC||arthur.j.odwyer at gmail dot
com
--- C
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103281
Andrew Pinski changed:
What|Removed |Added
Target Milestone|10.5|14.0
Status|ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101943
Arthur O'Dwyer changed:
What|Removed |Added
CC||arthur.j.odwyer at gmail dot
com
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110948
Bug ID: 110948
Summary: Incorrect -Winvalid-constexpr on virtual defaulted
operator==
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: diagnostic
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28794
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |FIXED
Status|ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103281
Bug 103281 depends on bug 28794, which changed state.
Bug 28794 Summary: missed optimization with non-COND_EXPR and vrp and
comparisions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28794
What|Removed |Added
-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110947
Andrew Pinski changed:
What|Removed |Added
Keywords||diagnostic
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65213
Nick Desaulniers changed:
What|Removed |Added
CC||ndesaulniers at google dot com
--- Co
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103281
--- Comment #11 from CVS Commits ---
The trunk branch has been updated by Andrew Pinski :
https://gcc.gnu.org/g:aadc5c07feb0ab08729ab25d0d896b55860ad9e6
commit r14-3084-gaadc5c07feb0ab08729ab25d0d896b55860ad9e6
Author: Andrew Pinski
Date: M
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28794
--- Comment #8 from CVS Commits ---
The trunk branch has been updated by Andrew Pinski :
https://gcc.gnu.org/g:aadc5c07feb0ab08729ab25d0d896b55860ad9e6
commit r14-3084-gaadc5c07feb0ab08729ab25d0d896b55860ad9e6
Author: Andrew Pinski
Date: Mon
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110947
Bug ID: 110947
Summary: Should -Wmissing-variable-declarations not trigger on
register variables?
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: norm
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109956
--- Comment #15 from Martin Uecker ---
GCC seems to allocate enough for sizeof(struct foo) + n * sizeof(char) but not
for sizeof(struct { int a; char b; char t[n]; }).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109684
--- Comment #13 from Paul Thomas ---
(In reply to Steve Kargl from comment #12)
> On Mon, Aug 07, 2023 at 10:04:54PM +, kargl at gcc dot gnu.org wrote:
> >
> > diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc
> > index 3cd470ddc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #6 from Dave Rodgman ---
Under clang, we see that mbedtls_xor being inlined, or not, causes an
equivalent perf difference. Note that mbedtls_xor is inline in the gcc O2
version and not in the gcc Os version.
Not inline mbedtls_xor,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #14 from Jonathan Wakely ---
Ah, and the patch will pessimize cases like str.assign(str2.begin(),
str2.end()) where
str.capacity() >= str2.capacity().
The current implementation in terms of replace(begin(), end(), first, last)
handl
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110899
--- Comment #11 from Michael Matz ---
(In reply to Florian Weimer from comment #10)
> (In reply to Michael Matz from comment #9)
> > > > I don't see how that helps. Imagine a preserve_all function foo that
> > > > calls
> > > > printf. How do
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #5 from Dave Rodgman ---
(In reply to Richard Biener from comment #3)
> Note you shouldn't use -Os if you care about performance. GCC is quite
> reasonable with code size increases at -O2 (as compared to other compilers).
> Instead
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49955
Richard Biener changed:
What|Removed |Added
Resolution|--- |FIXED
Status|ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
Bug 53947 depends on bug 49955, which changed state.
Bug 49955 Summary: Fails to do partial basic-block SLP
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49955
What|Removed |Added
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49955
--- Comment #6 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:d9f3ea61fe36e2de3354b90b65ff8245099114c9
commit r14-3078-gd9f3ea61fe36e2de3354b90b65ff8245099114c9
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
Dave Rodgman changed:
What|Removed |Added
Keywords|missed-optimization |
Component|ipa
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
Richard Biener changed:
What|Removed |Added
Component|other |ipa
Target|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110924
Richard Biener changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110924
--- Comment #13 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:31ec413098bd334115aff73fc755e49afd3ac371
commit r14-3076-g31ec413098bd334115aff73fc755e49afd3ac371
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
Alexander Monakov changed:
What|Removed |Added
CC||amonakov at gcc dot gnu.org
--- Com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #13 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #11)
> With this change we make a single allocation+copy and then do a cheap move
> assignment:
>
> --- a/libstdc++-v3/include/bits/basic_string.h
> +++ b/libstd
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #12 from Jonathan Wakely ---
That would also benefit this overload:
basic_string&
assign(initializer_list<_CharT> __l)
{ return this->assign(__l.begin(), __l.size()); }
That currently goes via replace(begin(), end
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110779
--- Comment #9 from ro at CeBiTec dot Uni-Bielefeld.DE ---
> --- Comment #8 from Gaius Mulley ---
> Created attachment 55703
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55703&action=edit
> Proposed fix (addendum)
>
> Here is a patch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
--- Comment #1 from Dave Rodgman ---
Disassembly under -Os:
139c :
139c: a9b67bfdstp x29, x30, [sp, #-160]!
13a0: 910003fdmov x29, sp
13a4: a9046bf9stp x25, x26, [sp,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #11 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #6)
> And _M_replace_dispatch creates a new copy anyway:
>
> _M_replace_dispatch(const_iterator __i1, const_iterator __i2,
> _Input
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #10 from Jonathan Wakely ---
(In reply to Jan Schultke from comment #8)
> From what I could read in the `char_traits::move` code that presumably gets
> called, this function explicitly tests for overlap between the memory
> regions,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110946
Bug ID: 110946
Summary: 3x perf regression with -Os on M1 Pro
Product: gcc
Version: 12.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #9 from Jonathan Wakely ---
That improves things:
Benchmark Time CPU Iterations
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939
--- Comment #8 from Chenghui Pan ---
(In reply to Stefan Schulze Frielinghaus from comment #6)
> I tried to reproduce it with a cross compiler while using the reproducer
> from PR110867 without getting an ICE. Can you attach a pre processed sou
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939
--- Comment #7 from Chenghui Pan ---
Created attachment 55706
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55706&action=edit
preprocessed file of gcc/tree-cfgcleanup.cc, ICE occurred in this place.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #8 from Jan Schultke ---
(In reply to Jonathan Wakely from comment #4)
> Please provide the testcase in a usable form, not just a link to an external
> site (which uses its own custom benchmark macros). This is requested at
> https:/
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110945
--- Comment #7 from Jonathan Wakely ---
(except with correct allocator propagation)
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