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dc53296ea1
void test(vector float *F, float f) {
vector float G = *F + *F;
*((float*)&G) = f;
*F = G + G;
}
void test2(vector float *F, float f) {
vector float G = *F + *F;
((float*)&G)[2] = f;
*F = G + G;
}
void test3(vector float *F, float *f) {
vector float G = *F + *F;
*f = ((float*)&G)[2];
}
void test4(vector float *F, float *f) {
vector float G = *F + *F;
*f = *((float*)&G);
}
into insert/extract element operations with no memory traffic.
llvm-svn: 27709
57 lines
2.5 KiB
LLVM
57 lines
2.5 KiB
LLVM
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; RUN: llvm-as < %s | opt -scalarrepl -disable-output &&
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; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep alloca
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void %test(<4 x float>* %F, float %f) {
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entry:
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%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3]
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%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
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%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp3, <4 x float>* %G
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%G = getelementptr <4 x float>* %G, int 0, int 0 ; <float*> [#uses=1]
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store float %f, float* %G
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%tmp4 = load <4 x float>* %G ; <<4 x float>> [#uses=2]
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%tmp6 = add <4 x float> %tmp4, %tmp4 ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp6, <4 x float>* %F
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ret void
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}
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void %test2(<4 x float>* %F, float %f) {
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entry:
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%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3]
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%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
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%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp3, <4 x float>* %G
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%tmp = getelementptr <4 x float>* %G, int 0, int 2 ; <float*> [#uses=1]
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store float %f, float* %tmp
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%tmp4 = load <4 x float>* %G ; <<4 x float>> [#uses=2]
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%tmp6 = add <4 x float> %tmp4, %tmp4 ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp6, <4 x float>* %F
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ret void
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}
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void %test3(<4 x float>* %F, float* %f) {
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entry:
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%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2]
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%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
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%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp3, <4 x float>* %G
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%tmp = getelementptr <4 x float>* %G, int 0, int 2 ; <float*> [#uses=1]
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%tmp = load float* %tmp ; <float> [#uses=1]
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store float %tmp, float* %f
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ret void
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}
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void %test4(<4 x float>* %F, float* %f) {
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entry:
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%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2]
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%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
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%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
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store <4 x float> %tmp3, <4 x float>* %G
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%G = getelementptr <4 x float>* %G, int 0, int 0 ; <float*> [#uses=1]
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%tmp = load float* %G ; <float> [#uses=1]
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store float %tmp, float* %f
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ret void
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}
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