| ; RUN: opt < %s -passes=instcombine | |
| define i32 @f(i32 %theNumber) { | |
| entry: | |
| %cmp = icmp sgt i32 %theNumber, -1 | |
| call void @llvm.assume(i1 %cmp) | |
| br i1 true, label %if.then, label %if.end | |
| if.then: ; preds = %entry | |
| %shl = shl nuw i32 %theNumber, 1 | |
| br label %if.end | |
| if.end: ; preds = %if.then, %entry | |
| %phi = phi i32 [ %shl, %if.then ], [ undef, %entry ] | |
| ret i32 %phi | |
| } | |
| declare void @llvm.assume(i1) |