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| author | Bob Wilson <bob.wilson@apple.com> | 2010-07-14 01:22:12 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-07-14 01:22:12 +0000 |
| commit | 9e82bf12a03117bfce78217662d5cf8e74aef357 (patch) | |
| tree | 1eee14d7faf92bd09981243744c858ea358e61fc /test/CodeGen/ARM/vdup.ll | |
| parent | a10b8494a50108482302f6f077d72fbc76d776ed (diff) | |
Add an ARM-specific DAG combining to avoid redundant VDUPLANE nodes.
Radar 7373643.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108303 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/vdup.ll')
| -rw-r--r-- | test/CodeGen/ARM/vdup.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/vdup.ll b/test/CodeGen/ARM/vdup.ll index 50e4df9f57c..a545f6c03d5 100644 --- a/test/CodeGen/ARM/vdup.ll +++ b/test/CodeGen/ARM/vdup.ll @@ -267,3 +267,15 @@ entry: %0 = shufflevector <2 x double> %arg0_int64x1_t, <2 x double> undef, <2 x i32> <i32 0, i32 0> ret <2 x double> %0 } + +; Radar 7373643 +;CHECK: redundantVdup: +;CHECK: vmov.i8 +;CHECK-NOT: vdup.8 +;CHECK: vstr.64 +define void @redundantVdup(<8 x i8>* %ptr) nounwind { + %1 = insertelement <8 x i8> undef, i8 -128, i32 0 + %2 = shufflevector <8 x i8> %1, <8 x i8> undef, <8 x i32> zeroinitializer + store <8 x i8> %2, <8 x i8>* %ptr, align 8 + ret void +} |