diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2012-04-14 13:54:10 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2012-04-14 13:54:10 +0000 |
| commit | 63faed5b8e4f2755f127fcb8aa440480c0649327 (patch) | |
| tree | 19c69a04768629f2d440944b71cbe90adae0b615 /test/Transforms/InstCombine/overflow.ll | |
| parent | d4c8b5d2e851b0e8a063c6bf8543a4823a26c15a (diff) | |
Diffstat (limited to 'test/Transforms/InstCombine/overflow.ll')
| -rw-r--r-- | test/Transforms/InstCombine/overflow.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/overflow.ll b/test/Transforms/InstCombine/overflow.ll index 9123283988de..81ceef8c41cf 100644 --- a/test/Transforms/InstCombine/overflow.ll +++ b/test/Transforms/InstCombine/overflow.ll @@ -130,4 +130,26 @@ entry: ret i64 %Q } +; CHECK: @test8 +; PR11438 +; This is @test1, but the operands are not sign-extended. Make sure +; we don't transform this case. +define i32 @test8(i64 %a, i64 %b) nounwind ssp { +entry: +; CHECK-NOT: llvm.sadd +; CHECK: add i64 %a, %b +; CHECK-NOT: llvm.sadd +; CHECK: ret + %add = add i64 %a, %b + %add.off = add i64 %add, 2147483648 + %0 = icmp ugt i64 %add.off, 4294967295 + br i1 %0, label %if.then, label %if.end + +if.then: + tail call void @throwAnExceptionOrWhatever() nounwind + br label %if.end +if.end: + %conv9 = trunc i64 %add to i32 + ret i32 %conv9 +} |