This updates gcc.dg/lower-subreg-1.c to reflect that the i386 backend now
lowers iordi3 itself, rather than relying on the middle-end's subreg1 pass.
Committed as obvious. Sorry for the noise; my "-m32 -march=cascadelake"
scripts were looking for regressions in gcc.target/i386 [now corrected].
2022-03-06 Roger Sayle <ro...@nextmovesoftware.com>
gcc/testsuite/ChangeLog
* gcc.dg/lower-subreg-1.c: Update test case. iordi3 is no longer
lowered by the RTL subreg1 pass on ia32 [even with -mno-stv].
Sorry again,
Roger
--
> -----Original Message-----
> From: sunil.k.pandey <skpan...@sc.intel.com>
> Sent: 05 March 2022 18:39
> To: gcc-patches@gcc.gnu.org; gcc-regress...@gcc.gnu.org;
> ro...@nextmovesoftware.com
> Subject: [r12-7502 Regression] FAIL: gcc.dg/lower-subreg-1.c scan-rtl-dump
> subreg1 "Splitting reg" on Linux/x86_64
>
> On Linux/x86_64,
>
> 8ea4a34bd0b0a46277b5e077c89cbd86dfb09c48 is the first bad commit commit
> 8ea4a34bd0b0a46277b5e077c89cbd86dfb09c48
> Author: Roger Sayle <ro...@nextmovesoftware.com>
> Date: Sat Mar 5 08:50:45 2022 +0000
>
> PR 104732: Simplify/fix DI mode logic expansion/splitting on -m32.
>
> caused
>
> FAIL: gcc.dg/lower-subreg-1.c scan-rtl-dump subreg1 "Splitting reg"
>
> with GCC configured with
>
> ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-
> master/master/r12-7502/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="dg.exp=gcc.dg/lower-
> subreg-1.c --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/lower-
> subreg-1.c --target_board='unix{-m32\ -march=cascadelake}'"
>
> (Please do not reply to this email, for question about this report,
contact me at
> skpgkp2 at gmail dot com)
diff --git a/gcc/testsuite/gcc.dg/lower-subreg-1.c
b/gcc/testsuite/gcc.dg/lower-subreg-1.c
index 63a4710..8462992 100644
--- a/gcc/testsuite/gcc.dg/lower-subreg-1.c
+++ b/gcc/testsuite/gcc.dg/lower-subreg-1.c
@@ -1,7 +1,5 @@
-/* { dg-do compile { target { ! { mips64 || { aarch64*-*-* arm*-*-* ia64-*-*
sparc*-*-* tilegx-*-* } } } } } */
+/* { dg-do compile { target { ! { mips64 || { aarch64*-*-* arm*-*-* i?86-*-*
ia64-*-* sparc*-*-* tilegx-*-* x86_64-*-* } } } } } */
/* { dg-options "-O -fdump-rtl-subreg1" } */
-/* { dg-additional-options "-mno-stv" { target ia32 } } */
-/* { dg-skip-if "" { { i?86-*-* x86_64-*-* } && x32 } } */
/* { dg-require-effective-target ilp32 } */
long long test (long long a, long long b) { return a | b; }
