* [r12-7687 Regression] FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7 on Linux/x86_64
@ 2022-03-17 18:08 sunil.k.pandey
2022-03-21 7:12 ` Richard Biener
0 siblings, 1 reply; 2+ messages in thread
From: sunil.k.pandey @ 2022-03-17 18:08 UTC (permalink / raw)
To: gcc-patches, gcc-regression, rguenther
On Linux/x86_64,
3a7ba8fd0cda387809e4902328af2473662b6a4a is the first bad commit
commit 3a7ba8fd0cda387809e4902328af2473662b6a4a
Author: Richard Biener <rguenther@suse.de>
Date: Thu Mar 17 08:10:59 2022 +0100
tree-optimization/104960 - unsplit edges after late sinking
caused
FAIL: gcc.target/i386/bt-5.c scan-assembler-not sar[lq][ \t]
FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7
with GCC configured with
../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-7687/usr --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl --enable-libmpx x86_64-linux --disable-bootstrap
To reproduce:
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/bt-5.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/bt-5.c --target_board='unix{-m64\ -march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [r12-7687 Regression] FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7 on Linux/x86_64
2022-03-17 18:08 [r12-7687 Regression] FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7 on Linux/x86_64 sunil.k.pandey
@ 2022-03-21 7:12 ` Richard Biener
0 siblings, 0 replies; 2+ messages in thread
From: Richard Biener @ 2022-03-21 7:12 UTC (permalink / raw)
To: gcc-patches; +Cc: Roger Sayle
On Thu, 17 Mar 2022, sunil.k.pandey wrote:
> On Linux/x86_64,
>
> 3a7ba8fd0cda387809e4902328af2473662b6a4a is the first bad commit
> commit 3a7ba8fd0cda387809e4902328af2473662b6a4a
> Author: Richard Biener <rguenther@suse.de>
> Date: Thu Mar 17 08:10:59 2022 +0100
>
> tree-optimization/104960 - unsplit edges after late sinking
>
> caused
>
> FAIL: gcc.target/i386/bt-5.c scan-assembler-not sar[lq][ \t]
> FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7
Btw, I've seen this as well and the "only" change is swapped edges
out of a conditional from the split/unsplit dance. I was hoping
somebody more familiar with the change intruducing that testcase
was going to investigate but in the end it's probably RTL expansion
presenting slightly different RTL IL to ifcvt.
Richard.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-03-17 18:08 [r12-7687 Regression] FAIL: gcc.target/i386/bt-5.c scan-assembler-times bt[lq][ \t] 7 on Linux/x86_64 sunil.k.pandey
2022-03-21 7:12 ` Richard Biener
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