1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -passes=irce -irce-print-changed-loops=true < %s | FileCheck %s 3 4target 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" 5target triple = "x86_64-unknown-linux-gnu" 6 7; REQUIRES: asserts 8 9define void @test() { 10; CHECK-LABEL: @test( 11; CHECK-NEXT: bb: 12; CHECK-NEXT: br label [[OUTER_HEADER:%.*]] 13; CHECK: outer_latch: 14; CHECK-NEXT: [[TMP:%.*]] = or i32 [[TMP5:%.*]], 1 15; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[TMP5]], 1 16; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP8:%.*]], 0 17; CHECK-NEXT: br i1 [[TMP3]], label [[RET2:%.*]], label [[OUTER_HEADER]] 18; CHECK: outer_header: 19; CHECK-NEXT: [[TMP5]] = phi i32 [ 0, [[BB:%.*]] ], [ [[TMP2]], [[OUTER_LATCH:%.*]] ] 20; CHECK-NEXT: br label [[INNER_HEADER:%.*]] 21; CHECK: inner_exit: 22; CHECK-NEXT: [[TMP12_LCSSA:%.*]] = phi i32 [ [[TMP12:%.*]], [[INNER_HEADER]] ] 23; CHECK-NEXT: [[TMP7:%.*]] = or i32 [[TMP12_LCSSA]], [[TMP5]] 24; CHECK-NEXT: [[TMP8]] = add nuw i32 [[TMP12_LCSSA]], [[TMP5]] 25; CHECK-NEXT: [[TMP9:%.*]] = icmp ult i32 [[TMP5]], 0 26; CHECK-NEXT: br i1 [[TMP9]], label [[OUTER_LATCH]], label [[RET1:%.*]] 27; CHECK: ret1: 28; CHECK-NEXT: ret void 29; CHECK: inner_header: 30; CHECK-NEXT: [[TMP12]] = phi i32 [ [[TMP14:%.*]], [[INNER_HEADER]] ], [ 0, [[OUTER_HEADER]] ] 31; CHECK-NEXT: [[TMP13:%.*]] = or i32 [[TMP12]], 1 32; CHECK-NEXT: [[TMP14]] = add nuw nsw i32 [[TMP12]], 1 33; CHECK-NEXT: br i1 true, label [[INNER_EXIT:%.*]], label [[INNER_HEADER]] 34; CHECK: ret2: 35; CHECK-NEXT: ret void 36; 37bb: 38 br label %outer_header 39 40outer_latch: ; preds = %inner_exit 41 %tmp = or i32 %tmp5, 1 42 %tmp2 = add nuw nsw i32 %tmp5, 1 43 %tmp3 = icmp eq i32 %tmp8, 0 44 br i1 %tmp3, label %ret2, label %outer_header 45 46outer_header: ; preds = %outer_latch, %bb 47 %tmp5 = phi i32 [ 0, %bb ], [ %tmp2, %outer_latch ] 48 br label %inner_header 49 50inner_exit: ; preds = %inner_header 51 %tmp12.lcssa = phi i32 [ %tmp12, %inner_header ] 52 %tmp7 = or i32 %tmp12.lcssa, %tmp5 53 %tmp8 = add nuw i32 %tmp12.lcssa, %tmp5 54 %tmp9 = icmp ult i32 %tmp5, 0 55 br i1 %tmp9, label %outer_latch, label %ret1 56 57ret1: ; preds = %inner_exit 58 ret void 59 60inner_header: ; preds = %inner_header, %outer_header 61 %tmp12 = phi i32 [ %tmp14, %inner_header ], [ 0, %outer_header ] 62 %tmp13 = or i32 %tmp12, 1 63 %tmp14 = add nuw nsw i32 %tmp12, 1 64 br i1 true, label %inner_exit, label %inner_header 65 66ret2: ; preds = %outer_latch 67 ret void 68} 69