From 95467204849fbec8dccbef3143cd1d45ad606311 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 31 Mar 2006 22:16:19 +0000 Subject: [PATCH] An identity shuffle shouldn't generate any permute code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27316 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/Generic/vector-identity-shuffle.ll | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 test/CodeGen/Generic/vector-identity-shuffle.ll diff --git a/test/CodeGen/Generic/vector-identity-shuffle.ll b/test/CodeGen/Generic/vector-identity-shuffle.ll new file mode 100644 index 00000000000..7ee5fd6d2b0 --- /dev/null +++ b/test/CodeGen/Generic/vector-identity-shuffle.ll @@ -0,0 +1,16 @@ +; RUN: llvm-as < %s | llc -march=ppc32 -mcpu=g5 | grep _test && +; RUN: llvm-as < %s | llc -march=ppc32 -mcpu=g5 | not grep vperm + +void %test(<4 x float> *%tmp2.i) { + %tmp2.i = load <4x float>* %tmp2.i + %xFloat0.48 = extractelement <4 x float> %tmp2.i, uint 0 ; [#uses=1] + %inFloat0.49 = insertelement <4 x float> undef, float %xFloat0.48, uint 0 ; <<4 x float>> [#uses=1] + %xFloat1.50 = extractelement <4 x float> %tmp2.i, uint 1 ; [#uses=1] + %inFloat1.52 = insertelement <4 x float> %inFloat0.49, float %xFloat1.50, uint 1 ; <<4 x float>> [#uses=1] + %xFloat2.53 = extractelement <4 x float> %tmp2.i, uint 2 ; [#uses=1] + %inFloat2.55 = insertelement <4 x float> %inFloat1.52, float %xFloat2.53, uint 2 ; <<4 x float>> [#uses=1] + %xFloat3.56 = extractelement <4 x float> %tmp2.i, uint 3 ; [#uses=1] + %inFloat3.58 = insertelement <4 x float> %inFloat2.55, float %xFloat3.56, uint 3 ; <<4 x float>> [#uses=4] + store <4 x float> %inFloat3.58, <4x float>* %tmp2.i + ret void +}