; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -passes=irce -irce-print-changed-loops=true < %s | FileCheck %s target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2" target triple = "x86_64-unknown-linux-gnu" ; REQUIRES: asserts define void @test() { ; CHECK-LABEL: @test( ; CHECK-NEXT: bb: ; CHECK-NEXT: br label [[OUTER_HEADER:%.*]] ; CHECK: outer_latch: ; CHECK-NEXT: [[TMP:%.*]] = or i32 [[TMP5:%.*]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[TMP5]], 1 ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP8:%.*]], 0 ; CHECK-NEXT: br i1 [[TMP3]], label [[RET2:%.*]], label [[OUTER_HEADER]] ; CHECK: outer_header: ; CHECK-NEXT: [[TMP5]] = phi i32 [ 0, [[BB:%.*]] ], [ [[TMP2]], [[OUTER_LATCH:%.*]] ] ; CHECK-NEXT: br label [[INNER_HEADER:%.*]] ; CHECK: inner_exit: ; CHECK-NEXT: [[TMP12_LCSSA:%.*]] = phi i32 [ [[TMP12:%.*]], [[INNER_HEADER]] ] ; CHECK-NEXT: [[TMP7:%.*]] = or i32 [[TMP12_LCSSA]], [[TMP5]] ; CHECK-NEXT: [[TMP8]] = add nuw i32 [[TMP12_LCSSA]], [[TMP5]] ; CHECK-NEXT: [[TMP9:%.*]] = icmp ult i32 [[TMP5]], 0 ; CHECK-NEXT: br i1 [[TMP9]], label [[OUTER_LATCH]], label [[RET1:%.*]] ; CHECK: ret1: ; CHECK-NEXT: ret void ; CHECK: inner_header: ; CHECK-NEXT: [[TMP12]] = phi i32 [ [[TMP14:%.*]], [[INNER_HEADER]] ], [ 0, [[OUTER_HEADER]] ] ; CHECK-NEXT: [[TMP13:%.*]] = or i32 [[TMP12]], 1 ; CHECK-NEXT: [[TMP14]] = add nuw nsw i32 [[TMP12]], 1 ; CHECK-NEXT: br i1 true, label [[INNER_EXIT:%.*]], label [[INNER_HEADER]] ; CHECK: ret2: ; CHECK-NEXT: ret void ; bb: br label %outer_header outer_latch: ; preds = %inner_exit %tmp = or i32 %tmp5, 1 %tmp2 = add nuw nsw i32 %tmp5, 1 %tmp3 = icmp eq i32 %tmp8, 0 br i1 %tmp3, label %ret2, label %outer_header outer_header: ; preds = %outer_latch, %bb %tmp5 = phi i32 [ 0, %bb ], [ %tmp2, %outer_latch ] br label %inner_header inner_exit: ; preds = %inner_header %tmp12.lcssa = phi i32 [ %tmp12, %inner_header ] %tmp7 = or i32 %tmp12.lcssa, %tmp5 %tmp8 = add nuw i32 %tmp12.lcssa, %tmp5 %tmp9 = icmp ult i32 %tmp5, 0 br i1 %tmp9, label %outer_latch, label %ret1 ret1: ; preds = %inner_exit ret void inner_header: ; preds = %inner_header, %outer_header %tmp12 = phi i32 [ %tmp14, %inner_header ], [ 0, %outer_header ] %tmp13 = or i32 %tmp12, 1 %tmp14 = add nuw nsw i32 %tmp12, 1 br i1 true, label %inner_exit, label %inner_header ret2: ; preds = %outer_latch ret void }