https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115683
Bug ID: 115683
Summary: SSE2 regressions after obselete of vcond{,u,eq}.
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: liuhongt at gcc dot gnu.org
Target Milestone: ---
Whole failure list.
g++: g++.target/i386/pr100637-1b.C -std=gnu++14 scan-assembler-times pcmpeqb
2
g++: g++.target/i386/pr100637-1b.C -std=gnu++17 scan-assembler-times pcmpeqb
2
g++: g++.target/i386/pr100637-1b.C -std=gnu++20 scan-assembler-times pcmpeqb
2
g++: g++.target/i386/pr100637-1b.C -std=gnu++98 scan-assembler-times pcmpeqb
2
g++: g++.target/i386/pr100637-1w.C -std=gnu++14 scan-assembler-times pcmpeqw
2
g++: g++.target/i386/pr100637-1w.C -std=gnu++17 scan-assembler-times pcmpeqw
2
g++: g++.target/i386/pr100637-1w.C -std=gnu++20 scan-assembler-times pcmpeqw
2
g++: g++.target/i386/pr100637-1w.C -std=gnu++98 scan-assembler-times pcmpeqw
2
g++: g++.target/i386/pr103861-1.C -std=gnu++14 scan-assembler-times pcmpeqb 2
g++: g++.target/i386/pr103861-1.C -std=gnu++17 scan-assembler-times pcmpeqb 2
g++: g++.target/i386/pr103861-1.C -std=gnu++20 scan-assembler-times pcmpeqb 2
g++: g++.target/i386/pr103861-1.C -std=gnu++98 scan-assembler-times pcmpeqb 2
gcc: gcc.target/i386/pr88540.c scan-assembler minpd
There're extra 1 pcmpeq instruction generated in below 3 testcase for
comparison of GTU, x86 doesn't support native GTU comparison, but use psubusw +
pcmpeq + pcmpeq, the second pcmpeq is used to negate the mask, and the negate
can be
eliminated in vcond{,u,eq} expander by just swapping if_true and if_else.
g++: g++.target/i386/pr100637-1b.C
g++.target/i386/pr100637-1w.C
g++: g++.target/i386/pr103861-1.C
This one maybe a little bit difficult, it's x86 specific floating point
min/max{ps,pd} which is an exact match of a > b ? a : b, and not
ieee-conformant.
gcc: gcc.target/i386/pr88540.c scan-assembler minpd
