| ; 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 } |
