From eafc5cb80d58cb9447623a557be4d4f55f42fbc3 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 14 Oct 2010 00:05:07 +0000 Subject: add uadd_ov/usub_ov to apint, consolidate constant folding logic to use the new APInt methods. Among other things this implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold which comes from "clang -ftrapv", originally brought to my attention from PR8221. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116457 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/ConstProp/overflow-ops.ll | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'test/Transforms/ConstProp/overflow-ops.ll') diff --git a/test/Transforms/ConstProp/overflow-ops.ll b/test/Transforms/ConstProp/overflow-ops.ll index 1547a4d..5587e9b 100644 --- a/test/Transforms/ConstProp/overflow-ops.ll +++ b/test/Transforms/ConstProp/overflow-ops.ll @@ -170,3 +170,14 @@ declare {i8, i1} @llvm.usub.with.overflow.i8(i8, i8) declare {i8, i1} @llvm.sadd.with.overflow.i8(i8, i8) declare {i8, i1} @llvm.ssub.with.overflow.i8(i8, i8) +declare {i8, i1} @llvm.smul.with.overflow.i8(i8, i8) + +; rdar://8501501 +define {i8, i1} @smul_1() nounwind { +entry: + %t = call {i8, i1} @llvm.smul.with.overflow.i8(i8 -20, i8 -10) + ret {i8, i1} %t + +; CHECK: @smul_1 +; CHECK: ret %i8i1 { i8 -56, i1 true } +} -- cgit v1.1