| ; REQUIRES: asserts |
| ; RUN: opt < %s -S -Os -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS |
| ; RUN: opt < %s -S -Oz -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ |
| |
| ; Loop should be rotated for -Os but not for -Oz. |
| ; OS: rotating Loop at depth 1 |
| ; OZ-NOT: rotating Loop at depth 1 |
| |
| @e = global i32 10 |
| |
| declare void @use(i32) |
| |
| define void @test() { |
| entry: |
| %end = load i32, i32* @e |
| br label %loop |
| |
| loop: |
| %n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ] |
| %cond = icmp eq i32 %n.phi, %end |
| br i1 %cond, label %exit, label %loop.fin |
| |
| loop.fin: |
| %n = add i32 %n.phi, 1 |
| call void @use(i32 %n) |
| br label %loop |
| |
| exit: |
| ret void |
| } |
