From 26b482d7a76df3f67675ce852daed0eba709c63e Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 19 Dec 2010 19:35:32 +0000 Subject: optimize uadd(x, cst) into a comparison when the normal result is dead. This is required for my next patch to not regress the testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122181 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/InstCombine/intrinsics.ll | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'test/Transforms/InstCombine/intrinsics.ll') diff --git a/test/Transforms/InstCombine/intrinsics.ll b/test/Transforms/InstCombine/intrinsics.ll index d672d8c153..ed9c7b3840 100644 --- a/test/Transforms/InstCombine/intrinsics.ll +++ b/test/Transforms/InstCombine/intrinsics.ll @@ -71,6 +71,16 @@ define i8 @uaddtest5(i8 %A, i1* %overflowPtr) { ; CHECK: ret i8 %A } +define i1 @uaddtest6(i8 %A, i8 %B) { + %x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %A, i8 -4) + %z = extractvalue %overflow.result %x, 1 + ret i1 %z +; CHECK: @uaddtest6 +; CHECK-NEXT: %z = icmp ugt i8 %A, 3 +; CHECK-NEXT: ret i1 %z +} + + define i8 @umultest1(i8 %A, i1* %overflowPtr) { %x = call %overflow.result @llvm.umul.with.overflow.i8(i8 0, i8 %A) %y = extractvalue %overflow.result %x, 0 -- cgit v1.2.3