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Diffstat (limited to 'test/Transforms/Reassociate/negation1.ll')
| -rw-r--r-- | test/Transforms/Reassociate/negation1.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/Reassociate/negation1.ll b/test/Transforms/Reassociate/negation1.ll new file mode 100644 index 0000000..34b943c --- /dev/null +++ b/test/Transforms/Reassociate/negation1.ll @@ -0,0 +1,15 @@ +; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s + +; Test that we can turn things like A*B + X - A*B -> X. + +define i32 @test1(i32 %a, i32 %b, i32 %x) { +; CHECK-LABEL: test1 +; CHECK: ret i32 %x + + %c = mul i32 %a, %b + %d = add i32 %c, %x + %c1 = mul i32 %a, %b + %f = sub i32 %d, %c1 + ret i32 %f +} + |