68 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; NOTE: Only %local_3_4 is important here.3; All other instructions are needed to lure LLVM into executing4; specific code to trigger a bug.5; RUN: opt < %s -passes=indvars -S | FileCheck %s6define i32 @test() {7; CHECK-LABEL: @test(8; CHECK-NEXT: entry:9; CHECK-NEXT: br label [[OUTER:%.*]]10; CHECK: outer:11; CHECK-NEXT: [[LOCAL_6_6:%.*]] = phi i32 [ 10, [[ENTRY:%.*]] ], [ [[TMP5:%.*]], [[LATCH:%.*]] ]12; CHECK-NEXT: [[LOCAL_4_5:%.*]] = phi i32 [ 56587, [[ENTRY]] ], [ 0, [[LATCH]] ]13; CHECK-NEXT: [[LOCAL_3_4:%.*]] = phi i32 [ 2, [[ENTRY]] ], [ [[TMP5]], [[LATCH]] ]14; CHECK-NEXT: [[DOTUDIV:%.*]] = udiv i32 [[LOCAL_6_6]], 836115; CHECK-NEXT: br label [[INNER:%.*]]16; CHECK: inner:17; CHECK-NEXT: [[LOCAL_7_3:%.*]] = phi i32 [ 2, [[OUTER]] ], [ [[TMP3:%.*]], [[INNER]] ]18; CHECK-NEXT: [[LOCAL_4_5_PN:%.*]] = phi i32 [ [[LOCAL_4_5]], [[OUTER]] ], [ [[TMP2:%.*]], [[INNER]] ]19; CHECK-NEXT: [[LOCAL_3_31:%.*]] = mul i32 [[LOCAL_4_5_PN]], [[DOTUDIV]]20; CHECK-NEXT: [[TMP0:%.*]] = mul nuw nsw i32 [[LOCAL_7_3]], [[DOTUDIV]]21; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[TMP0]], [[LOCAL_3_4]]22; CHECK-NEXT: [[TMP2]] = add i32 [[TMP1]], [[LOCAL_3_31]]23; CHECK-NEXT: [[TMP3]] = add nuw nsw i32 [[LOCAL_7_3]], 124; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i32 [[LOCAL_7_3]], 425; CHECK-NEXT: br i1 [[TMP4]], label [[LATCH]], label [[INNER]]26; CHECK: latch:27; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP2]], [[INNER]] ]28; CHECK-NEXT: [[TMP5]] = add nuw nsw i32 [[LOCAL_6_6]], 129; CHECK-NEXT: [[TMP6:%.*]] = icmp ugt i32 [[LOCAL_6_6]], 27630; CHECK-NEXT: br i1 [[TMP6]], label [[RETURN:%.*]], label [[OUTER]]31; CHECK: return:32; CHECK-NEXT: [[DOTLCSSA_LCSSA:%.*]] = phi i32 [ [[DOTLCSSA]], [[LATCH]] ]33; CHECK-NEXT: ret i32 [[DOTLCSSA_LCSSA]]34;35entry:36 br label %outer37 38outer:39 %local_6_6 = phi i32 [ 10, %entry ], [ %5, %latch ]40 %local_4_5 = phi i32 [ 56587, %entry ], [ 0, %latch ]41 %local_3_4 = phi i32 [ 2, %entry ], [ %5, %latch ]42 %.udiv = udiv i32 %local_6_6, 836143 br label %inner44 45inner:46 %local_7_3 = phi i32 [ 2, %outer ], [ %3, %inner ]47 %local_4_5.pn = phi i32 [ %local_4_5, %outer ], [ %2, %inner ]48 %local_3_31 = mul i32 %local_4_5.pn, %.udiv49 %0 = mul i32 %local_7_3, %.udiv50 %1 = sub i32 %0, %local_3_451 %2 = add i32 %1, %local_3_3152 %3 = add nuw nsw i32 %local_7_3, 153 %4 = icmp ugt i32 %local_7_3, 454 br i1 %4, label %latch, label %inner55 56latch:57 %.lcssa = phi i32 [ %2, %inner ]58 %5 = add nuw nsw i32 %local_6_6, 159 %6 = icmp ugt i32 %local_6_6, 27660 br i1 %6, label %return, label %outer61 62return:63 %.lcssa.lcssa = phi i32 [ %.lcssa, %latch ]64 ret i32 %.lcssa.lcssa65 66}67 68