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Diffstat (limited to 'test/Transforms/Reassociate/subtest.ll')
| -rw-r--r-- | test/Transforms/Reassociate/subtest.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/Transforms/Reassociate/subtest.ll b/test/Transforms/Reassociate/subtest.ll new file mode 100644 index 0000000..4c63d12 --- /dev/null +++ b/test/Transforms/Reassociate/subtest.ll @@ -0,0 +1,11 @@ +; With sub reassociation, constant folding can eliminate the 12 and -12 constants. +; +; RUN: opt < %s -reassociate -instcombine -S | not grep 12 + +define i32 @test(i32 %A, i32 %B) { + %X = add i32 -12, %A ; <i32> [#uses=1] + %Y = sub i32 %X, %B ; <i32> [#uses=1] + %Z = add i32 %Y, 12 ; <i32> [#uses=1] + ret i32 %Z +} + |