1*9880d681SAndroid Build Coastguard Worker; REQUIRES: asserts 2*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -S -Os -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS 3*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -S -Oz -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; Loop should be rotated for -Os but not for -Oz. 6*9880d681SAndroid Build Coastguard Worker; OS: rotating Loop at depth 1 7*9880d681SAndroid Build Coastguard Worker; OZ-NOT: rotating Loop at depth 1 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Worker@e = global i32 10 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdeclare void @use(i32) 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workerdefine void @test() { 14*9880d681SAndroid Build Coastguard Workerentry: 15*9880d681SAndroid Build Coastguard Worker %end = load i32, i32* @e 16*9880d681SAndroid Build Coastguard Worker br label %loop 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerloop: 19*9880d681SAndroid Build Coastguard Worker %n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ] 20*9880d681SAndroid Build Coastguard Worker %cond = icmp eq i32 %n.phi, %end 21*9880d681SAndroid Build Coastguard Worker br i1 %cond, label %exit, label %loop.fin 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerloop.fin: 24*9880d681SAndroid Build Coastguard Worker %n = add i32 %n.phi, 1 25*9880d681SAndroid Build Coastguard Worker call void @use(i32 %n) 26*9880d681SAndroid Build Coastguard Worker br label %loop 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Workerexit: 29*9880d681SAndroid Build Coastguard Worker ret void 30*9880d681SAndroid Build Coastguard Worker} 31