1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -passes=jump-threading < %s | FileCheck %s 3; PR9446 4; Just check that it doesn't crash 5 6define void @int327() nounwind { 7; CHECK-LABEL: @int327( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: unreachable 10; CHECK: for.cond: 11; CHECK-NEXT: [[TOBOOL3:%.*]] = icmp eq i8 undef, 0 12; CHECK-NEXT: br i1 [[TOBOOL3]], label [[FOR_COND23:%.*]], label [[FOR_COND4:%.*]] 13; CHECK: for.cond4: 14; CHECK-NEXT: br label [[FOR_COND:%.*]] 15; CHECK: for.cond23: 16; CHECK-NEXT: [[CONV321:%.*]] = phi i32 [ [[CONV32:%.*]], [[FOR_BODY28:%.*]] ], [ 0, [[FOR_COND]] ], [ [[CONV321]], [[FOR_COND23]] ] 17; CHECK-NEXT: [[L_266_0:%.*]] = phi i32 [ [[PHITMP:%.*]], [[FOR_BODY28]] ], [ 0, [[FOR_COND]] ], [ 0, [[FOR_COND23]] ] 18; CHECK-NEXT: [[CMP26:%.*]] = icmp eq i32 [[L_266_0]], 0 19; CHECK-NEXT: br i1 [[CMP26]], label [[FOR_BODY28]], label [[FOR_COND23]] 20; CHECK: for.body28: 21; CHECK-NEXT: [[AND:%.*]] = and i32 [[CONV321]], 1 22; CHECK-NEXT: [[CONV32]] = zext i8 undef to i32 23; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[L_266_0]], 1 24; CHECK-NEXT: [[PHITMP]] = and i32 [[ADD]], 255 25; CHECK-NEXT: br label [[FOR_COND23]] 26; CHECK: if.end43: 27; CHECK-NEXT: ret void 28; 29entry: 30 unreachable 31 32for.cond: ; preds = %for.cond4 33 %tobool3 = icmp eq i8 undef, 0 34 br i1 %tobool3, label %for.cond23, label %for.cond4 35 36for.cond4: ; preds = %for.cond 37 br label %for.cond 38 39for.cond23: ; preds = %for.body28, %for.cond23, %for.cond 40 %conv321 = phi i32 [ %conv32, %for.body28 ], [ 0, %for.cond ], [ %conv321, %for.cond23 ] 41 %l_266.0 = phi i32 [ %phitmp, %for.body28 ], [ 0, %for.cond ], [ 0, %for.cond23 ] 42 %cmp26 = icmp eq i32 %l_266.0, 0 43 br i1 %cmp26, label %for.body28, label %for.cond23 44 45for.body28: ; preds = %for.cond23 46 %and = and i32 %conv321, 1 47 %conv32 = zext i8 undef to i32 48 %add = add nsw i32 %l_266.0, 1 49 %phitmp = and i32 %add, 255 50 br label %for.cond23 51 52if.end43: ; No predecessors! 53 ret void 54} 55 56