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| author | Craig Topper <craig.topper@gmail.com> | 2017-04-13 01:31:40 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-04-13 01:31:40 +0000 |
| commit | e70dffeb54a78cede2bd8b93926aafc6f219912a (patch) | |
| tree | 2fb6fbb603e283bfdfd055c2f630cc91155f04a3 /llvm | |
| parent | 942fa56f406e6c58f532244292abd1128207c2d0 (diff) | |
| download | bcm5719-llvm-e70dffeb54a78cede2bd8b93926aafc6f219912a.tar.gz bcm5719-llvm-e70dffeb54a78cede2bd8b93926aafc6f219912a.zip | |
[InstCombine] Add vector version of a test to show missing optimization.
llvm-svn: 300161
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/and2.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/and2.ll b/llvm/test/Transforms/InstCombine/and2.ll index 1af248b804c..afaddb701a9 100644 --- a/llvm/test/Transforms/InstCombine/and2.ll +++ b/llvm/test/Transforms/InstCombine/and2.ll @@ -110,6 +110,18 @@ define i64 @test9(i64 %x) { ret i64 %and } +; combine -x & 1 into x & 1 +define <2 x i64> @test9vec(<2 x i64> %x) { +; CHECK-LABEL: @test9vec( +; CHECK-NEXT: [[SUB:%.*]] = sub nsw <2 x i64> zeroinitializer, [[X:%.*]] +; CHECK-NEXT: [[AND:%.*]] = and <2 x i64> [[SUB]], <i64 1, i64 1> +; CHECK-NEXT: ret <2 x i64> [[AND]] +; + %sub = sub nsw <2 x i64> <i64 0, i64 0>, %x + %and = and <2 x i64> %sub, <i64 1, i64 1> + ret <2 x i64> %and +} + define i64 @test10(i64 %x) { ; CHECK-LABEL: @test10( ; CHECK-NEXT: [[AND:%.*]] = and i64 %x, 1 |
