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Fixes a bug in the DAGCombiner. LoadSDNodes have two values (data, chain).

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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
This commit is contained in:
Nadav Rotem
2011-05-11 14:40:50 +00:00
parent 104e99256d
commit 42febc6e99
5 changed files with 29 additions and 12 deletions
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8
test/CodeGen/X86/vec_extract-sse4.ll
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@@ -1,8 +1,8 @@
; RUN: llc < %s -march=x86 -mattr=+sse41 -o %t
; RUN: grep extractps %t | count 1
; RUN: grep pextrd %t | count 1
; 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: not grep movss %t
; RUN: grep movss %t | count 2
define void @t1(float* %R, <4 x float>* %P1) nounwind {
%X = load <4 x float>* %P1