https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87674
Bug ID: 87674
Summary: AVX512: incorrect intrinsic signature
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: wen...@mitsuba-renderer.org
Target Milestone: ---
Hi,
I'm seeing a number of warnings related to the following three intrinsics,
which appaer to have an incorrect signature. The fix is easy: simply change
__mmask16 to __mmask8 for those definitions (and this is also what's correct
according to Intel's Intrinsics Explorer)
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlintrin.h:
In function ‘__m128i _mm_mask_mullo_epi32(__m128i, __mmask16, __m128i,
__m128i)’:
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlintrin.h:9055:23:
warning: conversion from ‘__mmask16’ {aka ‘short unsigned int’} to ‘unsigned
char’ may change value [-Wconversion]
(__v4si) __W, __M); ^~~
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlbwintrin.h:
In function ‘__m128i _mm_mask_packus_epi32(__m128i, __mmask16, __m128i,
__m128i)’:
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlbwintrin.h:4354:25:
warning: conversion from ‘__mmask16’ {aka ‘short unsigned int’} to ‘unsigned
char’ may change value [-Wconversion]
(__v8hi) __W, __M); ^~~
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlbwintrin.h:
In function ‘__m128i _mm_mask_packs_epi32(__m128i, __mmask16, __m128i,
__m128i)’:
/home/wjakob/dist/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/avx512vlbwintrin.h:4397:25:
warning: conversion from ‘__mmask16’ {aka ‘short unsigned int’} to ‘unsigned
char’ may change value [-Wconversion]
(__v8hi) __W, __M); ^~~
Best,
Wenzel
