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| author | Michael Liao <michael.liao@intel.com> | 2012-10-19 17:15:18 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2012-10-19 17:15:18 +0000 |
| commit | facace808cc5f83067a05c4c319f98fd75336f47 (patch) | |
| tree | 5a93a1a3afb28ec1bb2ac672b867740c96509abb /test/CodeGen | |
| parent | 239fd44f7a68aae4b2e8b6f1738ef9e8fd4ddc01 (diff) | |
| download | llvm-facace808cc5f83067a05c4c319f98fd75336f47.tar.gz llvm-facace808cc5f83067a05c4c319f98fd75336f47.tar.bz2 llvm-facace808cc5f83067a05c4c319f98fd75336f47.tar.xz | |
Lower BUILD_VECTOR to SHUFFLE + INSERT_VECTOR_ELT for X86
- If INSERT_VECTOR_ELT is supported (above SSE2, either by custom
sequence of legal insn), transform BUILD_VECTOR into SHUFFLE +
INSERT_VECTOR_ELT if most of elements could be built from SHUFFLE with few
(so far 1) elements being inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166288 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/buildvec-insertvec.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/buildvec-insertvec.ll b/test/CodeGen/X86/buildvec-insertvec.ll new file mode 100644 index 0000000000..3fb69a48b3 --- /dev/null +++ b/test/CodeGen/X86/buildvec-insertvec.ll @@ -0,0 +1,15 @@ +; RUN: llc < %s -mcpu=corei7 -mtriple=x86_64-unknown-linux-gnu | FileCheck %s + +define void @foo(<3 x float> %in, <4 x i8>* nocapture %out) nounwind { + %t0 = fptoui <3 x float> %in to <3 x i8> + %t1 = shufflevector <3 x i8> %t0, <3 x i8> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 undef> + %t2 = insertelement <4 x i8> %t1, i8 -1, i32 3 + store <4 x i8> %t2, <4 x i8>* %out, align 4 + ret void +; CHECK: foo +; CHECK: cvttps2dq +; CHECK-NOT: pextrd +; CHECK: pinsrd +; CHECK-NEXT: pshufb +; CHECK: ret +} |