https://bugs.llvm.org/show_bug.cgi?id=33212
Bug ID: 33212
Summary: PPC vec_cst useless at -O0
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: PowerPC
Assignee: unassignedb...@nondot.org
Reporter: benny....@gmail.com
CC: echri...@gmail.com, llvm-bugs@lists.llvm.org,
timshe...@gmail.com
$ cat cts.cc
#include <altivec.h>
typedef __vector float Packet4f;
typedef __vector int Packet4i;
Packet4i ConvertToPacket4i(const Packet4f& x) { return vec_cts(x, 0); }
$ clang --target=powerpc64le-linux-gnu cts.cc
fatal error: error in backend: Cannot select: intrinsic
%llvm.ppc.altivec.vctsxs
A workaround would be using macros instead of inline functions.
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