llvm-6502/test/CodeGen/X86/vec_extract.ll
Nadav Rotem 42febc6e99 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131183 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-11 14:40:50 +00:00

37 lines
1.2 KiB
LLVM

; RUN: llc < %s -mcpu=corei7 -march=x86 -mattr=+sse2,-sse41 -o %t
; RUN: grep movss %t | count 4
; RUN: grep movhlps %t | count 1
; RUN: not grep pshufd %t
; RUN: grep unpckhpd %t | count 1
define void @test1(<4 x float>* %F, float* %f) nounwind {
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp7 = fadd <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
%tmp2 = extractelement <4 x float> %tmp7, i32 0 ; <float> [#uses=1]
store float %tmp2, float* %f
ret void
}
define float @test2(<4 x float>* %F, float* %f) nounwind {
%tmp = load <4 x float>* %F ; <<4 x float>> [#uses=2]
%tmp7 = fadd <4 x float> %tmp, %tmp ; <<4 x float>> [#uses=1]
%tmp2 = extractelement <4 x float> %tmp7, i32 2 ; <float> [#uses=1]
ret float %tmp2
}
define void @test3(float* %R, <4 x float>* %P1) nounwind {
%X = load <4 x float>* %P1 ; <<4 x float>> [#uses=1]
%tmp = extractelement <4 x float> %X, i32 3 ; <float> [#uses=1]
store float %tmp, float* %R
ret void
}
define double @test4(double %A) nounwind {
%tmp1 = call <2 x double> @foo( ) ; <<2 x double>> [#uses=1]
%tmp2 = extractelement <2 x double> %tmp1, i32 1 ; <double> [#uses=1]
%tmp3 = fadd double %tmp2, %A ; <double> [#uses=1]
ret double %tmp3
}
declare <2 x double> @foo()