https://llvm.org/bugs/show_bug.cgi?id=27177
Bug ID: 27177
Summary: inlining and constant propagation to intrinsics
Product: clang
Version: 3.8
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: m...@sven-woop.de
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 16148
--> https://llvm.org/bugs/attachment.cgi?id=16148&action=edit
reproducer
I just ran into an issue where constants are not properly propagated to an
intrinsic which requires a constant argument. Compilation fails with an
appropiate error. Here a simple reproducer:
#include <immintrin.h>
inline __attribute__((always_inline)) void bla(__m128 a, __m128 b, const int x)
{
_mm_blend_ps(a, b, x);
}
int main()
{
__m128 a = _mm_set1_ps(1.0f);
__m128 b = _mm_set1_ps(2.0f);
const int x = 4;
bla(a,b,x);
}
Looks like the inlining happens too late.
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