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| author | Zvi Rackover <zvi.rackover@intel.com> | 2017-04-02 10:42:21 +0000 |
|---|---|---|
| committer | Zvi Rackover <zvi.rackover@intel.com> | 2017-04-02 10:42:21 +0000 |
| commit | e479980686e35ae872f03f8c56f0010bf8a5bc52 (patch) | |
| tree | 649b1cfdbd5ebe13c0d5e375bf88433310752142 /llvm/test/Transforms/InstSimplify | |
| parent | 15e484aa2b42bd9a199d30d1215b61297a08b2d0 (diff) | |
| download | bcm5719-llvm-e479980686e35ae872f03f8c56f0010bf8a5bc52.tar.gz bcm5719-llvm-e479980686e35ae872f03f8c56f0010bf8a5bc52.zip | |
Add another interesting shufflevector test case for InstSimplify. NFC.
Test case shows opportunity to constant fold a shuffle with one variable
input vector operand.
llvm-svn: 299327
Diffstat (limited to 'llvm/test/Transforms/InstSimplify')
| -rw-r--r-- | llvm/test/Transforms/InstSimplify/shufflevector.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstSimplify/shufflevector.ll b/llvm/test/Transforms/InstSimplify/shufflevector.ll index 1baecd2e749..4a9c0dfb234 100644 --- a/llvm/test/Transforms/InstSimplify/shufflevector.ll +++ b/llvm/test/Transforms/InstSimplify/shufflevector.ll @@ -1,6 +1,15 @@ ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -instsimplify -S | FileCheck %s +define <4 x i32> @const_folding(<4 x i32> %x) { +; CHECK-LABEL: @const_folding( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> zeroinitializer, <4 x i32> <i32 5, i32 4, i32 5, i32 4> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> %x, <4 x i32> zeroinitializer, <4 x i32> <i32 5, i32 4, i32 5, i32 4> + ret <4 x i32> %shuf +} + define <4 x i32> @splat_operand(<4 x i32> %x) { ; CHECK-LABEL: @splat_operand( ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> zeroinitializer |
