[Bug target/114987] [14/15 Regression] floating point vector regression, x86, between gcc 14 and gcc-13 using -O3 and target clones on skylake platforms

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987 --- Comment #7 from Haochen Jiang --- Furthermore, when I build with GCC11, the codegen is much better: vaddps 0xc0(%rsp),%ymm5,%ymm2 vaddps 0xe0(%rsp),%ymm4,%ymm1 vmovaps %ymm2,0x80(%rsp)

[Bug target/114987] [14/15 Regression] floating point vector regression, x86, between gcc 14 and gcc-13 using -O3 and target clones on skylake platforms

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987 --- Comment #6 from Hongtao Liu --- > I tried to move "vmovdqa %xmm1,0xd0(%rsp)" before "vmovdqa %xmm0,0xe0(%rsp)" > and rebuilt the binary and it will save half the regression. 57.93 │200: vaddps 0xc0(%rsp),%ymm3,%ymm5

[Bug target/114987] [14/15 Regression] floating point vector regression, x86, between gcc 14 and gcc-13 using -O3 and target clones on skylake platforms

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987 --- Comment #5 from Haochen Jiang --- What I have found is that the binary built with GCC13 and GCC14 will regress on Cascadelake and Skylake. But when I copied the binary to Icelake, it won't. Seems Icelake might fix this with micro-tuning.

[Bug target/114987] [14/15 Regression] floating point vector regression, x86, between gcc 14 and gcc-13 using -O3 and target clones on skylake platforms

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |NEW Summary|[14/15