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llvm-mirror/test/Transforms/InstCombine/vec_demanded_elts-3.ll
Eli Friedman 770f633389 PR4340: Run SimplifyDemandedVectorElts on insertelement instructions;
sometimes it can find simplifications that won't be found otherwise.

llvm-svn: 73006
2009-06-06 20:08:03 +00:00

15 lines
645 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep load
; PR4340
define void @vac(<4 x float>* nocapture %a) nounwind {
entry:
%tmp1 = load <4 x float>* %a ; <<4 x float>> [#uses=1]
%vecins = insertelement <4 x float> %tmp1, float 0.000000e+00, i32 0 ; <<4 x float>> [#uses=1]
%vecins4 = insertelement <4 x float> %vecins, float 0.000000e+00, i32 1; <<4 x float>> [#uses=1]
%vecins6 = insertelement <4 x float> %vecins4, float 0.000000e+00, i32 2; <<4 x float>> [#uses=1]
%vecins8 = insertelement <4 x float> %vecins6, float 0.000000e+00, i32 3; <<4 x float>> [#uses=1]
store <4 x float> %vecins8, <4 x float>* %a
ret void
}