| ; REQUIRES: asserts | |
| ; RUN: opt < %s -S -passes=loop-rotate -debug -debug-only=loop-rotate 2>&1 | FileCheck %s | |
| ; Loop should not be rotated for functions with the minsize attribute. | |
| ; This is mostly useful for LTO which doesn't (yet) understand -Oz. | |
| ; CHECK: LoopRotation: NOT rotating - contains 2 instructions, which is more | |
| @e = global i32 10 | |
| declare void @use(i32) | |
| ; Function attrs: minsize optsize | |
| define void @test() #0 { | |
| entry: | |
| %end = load i32, ptr @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 | |
| } | |
| attributes #0 = { minsize optsize } |