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| author | Nadav Rotem <nadav.rotem@intel.com> | 2011-10-29 21:23:04 +0000 |
|---|---|---|
| committer | Nadav Rotem <nadav.rotem@intel.com> | 2011-10-29 21:23:04 +0000 |
| commit | b00418af67b36dcd7d70a268ebba3480c1011348 (patch) | |
| tree | bf0c4b39d2d831774d5ec7b7a182a2c29fb3c3f9 /test/CodeGen/X86/2011-10-27-tstore.ll | |
| parent | f86545ecfdb48a43e62ce7dfd312913b0a24240b (diff) | |
| download | llvm-b00418af67b36dcd7d70a268ebba3480c1011348.tar.gz llvm-b00418af67b36dcd7d70a268ebba3480c1011348.tar.bz2 llvm-b00418af67b36dcd7d70a268ebba3480c1011348.tar.xz | |
Add a new DAGCombine optimization for BUILD_VECTOR.
If all of the inputs are zero/any_extended, create a new simple BV
which can be further optimized by other BV optimizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143297 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2011-10-27-tstore.ll')
| -rw-r--r-- | test/CodeGen/X86/2011-10-27-tstore.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2011-10-27-tstore.ll b/test/CodeGen/X86/2011-10-27-tstore.ll new file mode 100644 index 0000000000..016e02c3d5 --- /dev/null +++ b/test/CodeGen/X86/2011-10-27-tstore.ll @@ -0,0 +1,16 @@ +; RUN: llc < %s -march=x86-64 -mcpu=corei7 | FileCheck %s + +target triple = "x86_64-unknown-linux-gnu" + +;CHECK: ltstore +;CHECK: pshufd +;CHECK: pshufd +;CHECK: ret +define void @ltstore() { +entry: + %in = load <4 x i32>* undef + %j = shufflevector <4 x i32> %in, <4 x i32> undef, <2 x i32> <i32 0, i32 1> + store <2 x i32> %j, <2 x i32>* undef + ret void +} + |