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llvm-mirror/test/CodeGen/X86/vec_extract-sse4.ll
Nadav Rotem 57dd315a3b Fixes a bug in the DAGCombiner. LoadSDNodes have two values (data, chain).
If there is a store after the load node, then there is a chain, which means
that there is another user. Thus, asking hasOneUser would fail. Instead we
ask hasNUsesOfValue on the 'data' value.

llvm-svn: 131183
2011-05-11 14:40:50 +00:00

32 lines
778 B
LLVM

; RUN: llc < %s -mcpu=corei7 -march=x86 -mattr=+sse41 -o %t
; RUN: not grep extractps %t
; RUN: not grep pextrd %t
; RUN: not grep pshufd %t
; RUN: grep movss %t | count 2
define void @t1(float* %R, <4 x float>* %P1) nounwind {
%X = load <4 x float>* %P1
%tmp = extractelement <4 x float> %X, i32 3
store float %tmp, float* %R
ret void
}
define float @t2(<4 x float>* %P1) nounwind {
%X = load <4 x float>* %P1
%tmp = extractelement <4 x float> %X, i32 2
ret float %tmp
}
define void @t3(i32* %R, <4 x i32>* %P1) nounwind {
%X = load <4 x i32>* %P1
%tmp = extractelement <4 x i32> %X, i32 3
store i32 %tmp, i32* %R
ret void
}
define i32 @t4(<4 x i32>* %P1) nounwind {
%X = load <4 x i32>* %P1
%tmp = extractelement <4 x i32> %X, i32 3
ret i32 %tmp
}