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New testcase, checking to see we can turn this code:

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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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27709 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-14 21:41:54 +00:00
parent 0947429538
commit d8f5bd3988
1 changed files with 56 additions and 0 deletions
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56
test/Transforms/ScalarRepl/vector_promote.ll Normal file
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; RUN: llvm-as < %s | opt -scalarrepl -disable-output &&
; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep alloca
void %test(<4 x float>* %F, float %f) {
entry:
%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3]
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
store <4 x float> %tmp3, <4 x float>* %G
%G = getelementptr <4 x float>* %G, int 0, int 0 ; <float*> [#uses=1]
store float %f, float* %G
%tmp4 = load <4 x float>* %G ; <<4 x float>> [#uses=2]
%tmp6 = add <4 x float> %tmp4, %tmp4 ; <<4 x float>> [#uses=1]
store <4 x float> %tmp6, <4 x float>* %F
ret void
}
void %test2(<4 x float>* %F, float %f) {
entry:
%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=3]
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
store <4 x float> %tmp3, <4 x float>* %G
%tmp = getelementptr <4 x float>* %G, int 0, int 2 ; <float*> [#uses=1]
store float %f, float* %tmp
%tmp4 = load <4 x float>* %G ; <<4 x float>> [#uses=2]
%tmp6 = add <4 x float> %tmp4, %tmp4 ; <<4 x float>> [#uses=1]
store <4 x float> %tmp6, <4 x float>* %F
ret void
}
void %test3(<4 x float>* %F, float* %f) {
entry:
%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2]
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
store <4 x float> %tmp3, <4 x float>* %G
%tmp = getelementptr <4 x float>* %G, int 0, int 2 ; <float*> [#uses=1]
%tmp = load float* %tmp ; <float> [#uses=1]
store float %tmp, float* %f
ret void
}
void %test4(<4 x float>* %F, float* %f) {
entry:
%G = alloca <4 x float>, align 16 ; <<4 x float>*> [#uses=2]
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp3 = add <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
store <4 x float> %tmp3, <4 x float>* %G
%G = getelementptr <4 x float>* %G, int 0, int 0 ; <float*> [#uses=1]
%tmp = load float* %G ; <float> [#uses=1]
store float %tmp, float* %f
ret void
}