| ; RUN: opt -indvars -S < %s | FileCheck %s | |
| declare void @use(i1) | |
| define void @f() { | |
| ; CHECK-LABEL: @f( | |
| entry: | |
| %x = alloca i32 | |
| %y = alloca i32 | |
| br label %loop | |
| loop: | |
| %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] | |
| %iv.inc = add i32 %iv, 1 | |
| %x.gep = getelementptr i32, i32* %x, i32 %iv | |
| %eql = icmp eq i32* %x.gep, %y | |
| ; CHECK-NOT: @use(i1 true) | |
| call void @use(i1 %eql) | |
| ; %be.cond deliberately 'false' -- we want want the trip count to be 0. | |
| %be.cond = icmp ult i32 %iv, 0 | |
| br i1 %be.cond, label %loop, label %leave | |
| leave: | |
| ret void | |
| } |