https://bugs.llvm.org/show_bug.cgi?id=33433
Bug ID: 33433
Summary: FMA Header Included but not wanted
Product: clang
Version: 4.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Headers
Assignee: unassignedclangbugs at nondot.org
Reporter: cm7695 at yahoo.de
CC: llvm-bugs at lists.llvm.org
Created attachment 18626
--> https://bugs.llvm.org/attachment.cgi?id=18626&action=edit
Test file for compilation
My machine supports AVX, not FMA.
Compile test.c with:
clang -mavx
It says: clang -mavx test.c
test.c:6:25: error: redefinition of '_mm256_fmadd_pd'
static inline __m256d _mm256_fmadd_pd(__m256d a, __m256d b, __m256d c) {
^
/usr/bin/../lib64/clang/4.0.0/include/fmaintrin.h:161:1: note: previous
definition is here
_mm256_fmadd_pd(__m256d __A, __m256d __B, __m256d __C)
Headers for FMA are included. So clearly a redefinition happens. But this
behaviour is not normal.
If I compile with
gcc -mavx, it compiles and run the normal way.
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