| ; RUN: opt -simplifycfg -S < %s | FileCheck %s |
| |
| declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1 |
| |
| define i32 @f(i32 %a, i32 %b) #0 { |
| entry: |
| %uadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b) |
| %cmp = extractvalue { i32, i1 } %uadd, 1 |
| br i1 %cmp, label %return, label %if.end |
| |
| if.end: ; preds = %entry |
| %0 = extractvalue { i32, i1 } %uadd, 0 |
| br label %return |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ %0, %if.end ], [ 0, %entry ] |
| ret i32 %retval.0 |
| |
| ; CHECK-LABEL: @f( |
| ; CHECK-NOT: phi |
| ; CHECK: select |
| } |
