1; REQUIRES: asserts 2; RUN: opt < %s -S -Os -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS 3; RUN: opt < %s -S -Oz -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ 4 5; Loop should be rotated for -Os but not for -Oz. 6; OS: rotating Loop at depth 1 7; OZ-NOT: rotating Loop at depth 1 8 9@e = global i32 10 10 11declare void @use(i32) 12 13define void @test() { 14entry: 15 %end = load i32, i32* @e 16 br label %loop 17 18loop: 19 %n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ] 20 %cond = icmp eq i32 %n.phi, %end 21 br i1 %cond, label %exit, label %loop.fin 22 23loop.fin: 24 %n = add i32 %n.phi, 1 25 call void @use(i32 %n) 26 br label %loop 27 28exit: 29 ret void 30} 31