diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/Reassociate/subtest2.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/Reassociate/subtest2.ll b/test/Transforms/Reassociate/subtest2.ll new file mode 100644 index 0000000..c81e9b3 --- /dev/null +++ b/test/Transforms/Reassociate/subtest2.ll @@ -0,0 +1,13 @@ +; With sub reassociation, constant folding can eliminate the uses of %a. +; +; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis | grep %a | count 1 +; PR2047 + +define i32 @test(i32 %a, i32 %b, i32 %c) nounwind { +entry: + %tmp3 = sub i32 %a, %b ; <i32> [#uses=1] + %tmp5 = sub i32 %tmp3, %c ; <i32> [#uses=1] + %tmp7 = sub i32 %tmp5, %a ; <i32> [#uses=1] + ret i32 %tmp7 +} + |