[Bug target/112787] Codegen regression of large GCC vector extensions when enabling SVE

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112787

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |---
                 CC|                            |ebotcazou at gcc dot gnu.org
             Status|RESOLVED                    |REOPENED

--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This has introduced regressions on the 12 and 13 branches for x86-64/Linux:

FAIL: g++.dg/opt/pr91838.C  -std=c++14  scan-assembler
pxor\\\\s+%xmm0,\\\\s+%xmm0
FAIL: g++.dg/opt/pr91838.C  -std=c++17  scan-assembler
pxor\\\\s+%xmm0,\\\\s+%xmm0
FAIL: g++.dg/opt/pr91838.C  -std=c++20  scan-assembler
pxor\\\\s+%xmm0,\\\\s+%xmm0

https://gcc.gnu.org/pipermail/gcc-testresults/2024-March/809244.html