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| author | Nadav Rotem <nadav.rotem@intel.com> | 2011-05-11 14:40:50 +0000 |
|---|---|---|
| committer | Nadav Rotem <nadav.rotem@intel.com> | 2011-05-11 14:40:50 +0000 |
| commit | 42febc6e9963f82d5c56c3c7e6afe5e00769af41 (patch) | |
| tree | 831ef5f6559c00be76e73b0b5554a74c4efb533d /test/CodeGen/X86/2011-05-09-loaduse.ll | |
| parent | 104e99256d951674faadd865ed44ec698ede31ea (diff) | |
| download | llvm-42febc6e9963f82d5c56c3c7e6afe5e00769af41.tar.gz llvm-42febc6e9963f82d5c56c3c7e6afe5e00769af41.tar.bz2 llvm-42febc6e9963f82d5c56c3c7e6afe5e00769af41.tar.xz | |
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
Diffstat (limited to 'test/CodeGen/X86/2011-05-09-loaduse.ll')
| -rw-r--r-- | test/CodeGen/X86/2011-05-09-loaduse.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2011-05-09-loaduse.ll b/test/CodeGen/X86/2011-05-09-loaduse.ll new file mode 100644 index 0000000000..8673d7433f --- /dev/null +++ b/test/CodeGen/X86/2011-05-09-loaduse.ll @@ -0,0 +1,13 @@ +; RUN: llc < %s -march=x86 -mcpu=corei7 | FileCheck %s + +;CHECK: test +;CHECK-not: pshufd +;CHECK: ret +define float @test(<4 x float>* %A) nounwind { +entry: + %T = load <4 x float>* %A + %R = extractelement <4 x float> %T, i32 3 + store <4 x float><float 0.0, float 0.0, float 0.0, float 0.0>, <4 x float>* %A + ret float %R +} + |