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| author | Eugene Leviant <eleviant@accesssoftek.com> | 2017-02-17 07:36:03 +0000 |
|---|---|---|
| committer | Eugene Leviant <eleviant@accesssoftek.com> | 2017-02-17 07:36:03 +0000 |
| commit | 958fcd75026983975f8a5e04b1e2a64bf20695d8 (patch) | |
| tree | ac08012fa7280390602865c84a5e9c98e63c9d25 /llvm/test/Transforms/InstCombine | |
| parent | 7f1604aae62800e111f008717523498630473422 (diff) | |
| download | bcm5719-llvm-958fcd75026983975f8a5e04b1e2a64bf20695d8.tar.gz bcm5719-llvm-958fcd75026983975f8a5e04b1e2a64bf20695d8.zip | |
InstCombine: fix extraction when performing vector/array punning
Differential revision: https://reviews.llvm.org/D29491
llvm-svn: 295429
Diffstat (limited to 'llvm/test/Transforms/InstCombine')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll b/llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll new file mode 100644 index 00000000000..0f0365a07fb --- /dev/null +++ b/llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll @@ -0,0 +1,16 @@ +; RUN: opt < %s -instcombine -S | FileCheck %s + +define void @test(<16 x i8> %w, i32* %o1, float* %o2) { + +; CHECK: %v.bc = bitcast <16 x i8> %w to <4 x i32> +; CHECK-NEXT: %v.extract = extractelement <4 x i32> %v.bc, i32 3 +; CHECK-NEXT: %v.bc{{[0-9]*}} = bitcast <16 x i8> %w to <4 x float> +; CHECK-NEXT: %v.extract{{[0-9]*}} = extractelement <4 x float> %v.bc{{[0-9]*}}, i32 3 + + %v = shufflevector <16 x i8> %w, <16 x i8> undef, <4 x i32> <i32 12, i32 13, i32 14, i32 15> + %f = bitcast <4 x i8> %v to float + %i = bitcast <4 x i8> %v to i32 + store i32 %i, i32* %o1, align 4 + store float %f, float* %o2, align 4 + ret void +} |
