https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111889
Bug ID: 111889
Summary: [14 Regression] 128/256 intrins could not be used with
only specifying "no-evex512, avx512vl" in function
attribute
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: haochen.jiang at intel dot com
Target Milestone: ---
Created attachment 56155
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56155&action=edit
Simple testcase
With this simple testcase and command like this:
x86_64-pc-linux-gnu-gcc -O2 -march=x86-64 1.c
We will finally get:
error: inlining failed in call to ‘always_inline’ ‘_mm256_mask_mov_pd’: target
specific option mismatch
But if we use the command like this:
x86_64-pc-linux-gnu-gcc -O2 -march=x86-64 -mno-evex512 1.c
It seems that the default handle for evex512 with avx512 will finally let the
compiler wrongly suppose that 128/256 bit intrins need evex512 feature when
co-operating with function attribute, but actually it does not.
