1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=gvn -S < %s | FileCheck %s 3 4; Memdep had funny bug related to invariant.groups - because it did not 5; invalidated cache, in some very rare cases it was possible to show memory 6; dependence of the instruction that was deleted, but because other instruction 7; took it's place it resulted in call to vtable! Removing any of the branch 8; hides the bug. 9 10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 11target triple = "x86_64-grtev4-linux-gnu" 12 13%0 = type { ptr, %1 } 14%1 = type { %2 } 15%2 = type { %3 } 16%3 = type { %4, i64, %5 } 17%4 = type { ptr } 18%5 = type { i64, [8 x i8] } 19 20define void @fail(ptr noalias sret(i1) %arg, ptr %arg1, ptr %arg2, ptr %arg3, i1 %arg4) local_unnamed_addr #0 { 21; CHECK-LABEL: @fail( 22; CHECK-NEXT: bb: 23; CHECK-NEXT: [[I4:%.*]] = load ptr, ptr [[ARG1:%.*]], align 8, !invariant.group [[META6:![0-9]+]] 24; CHECK-NEXT: [[I5:%.*]] = getelementptr inbounds ptr, ptr [[I4]], i64 6 25; CHECK-NEXT: [[I6:%.*]] = load ptr, ptr [[I5]], align 8, !invariant.load [[META6]] 26; CHECK-NEXT: [[I7:%.*]] = tail call i64 [[I6]](ptr [[ARG1]]) #[[ATTR1:[0-9]+]] 27; CHECK-NEXT: [[I9:%.*]] = load ptr, ptr [[ARG2:%.*]], align 8 28; CHECK-NEXT: store i8 0, ptr [[I9]], align 1 29; CHECK-NEXT: br i1 [[ARG4:%.*]], label [[BB10:%.*]], label [[BB29:%.*]] 30; CHECK: bb10: 31; CHECK-NEXT: [[I14_PHI_TRANS_INSERT:%.*]] = getelementptr inbounds ptr, ptr [[I4]], i64 22 32; CHECK-NEXT: [[I15_PRE:%.*]] = load ptr, ptr [[I14_PHI_TRANS_INSERT]], align 8, !invariant.load [[META6]] 33; CHECK-NEXT: br label [[BB12:%.*]] 34; CHECK: bb12: 35; CHECK-NEXT: [[I16:%.*]] = call i64 [[I15_PRE]](ptr nonnull [[ARG1]], ptr null, i64 0) #[[ATTR1]] 36; CHECK-NEXT: br i1 true, label [[BB28:%.*]], label [[BB17:%.*]] 37; CHECK: bb17: 38; CHECK-NEXT: br i1 true, label [[BB18:%.*]], label [[BB21:%.*]] 39; CHECK: bb18: 40; CHECK-NEXT: br label [[BB28]] 41; CHECK: bb21: 42; CHECK-NEXT: br i1 true, label [[BB25:%.*]], label [[BB26:%.*]] 43; CHECK: bb25: 44; CHECK-NEXT: br label [[BB28]] 45; CHECK: bb26: 46; CHECK-NEXT: br label [[BB28]] 47; CHECK: bb28: 48; CHECK-NEXT: br i1 true, label [[BB12]], label [[BB28_BB29_CRIT_EDGE:%.*]] 49; CHECK: bb28.bb29_crit_edge: 50; CHECK-NEXT: br label [[BB29]] 51; CHECK: bb29: 52; CHECK-NEXT: ret void 53; 54bb: 55 %i4 = load ptr, ptr %arg1, align 8, !invariant.group !6 56 %i5 = getelementptr inbounds ptr, ptr %i4, i64 6 57 %i6 = load ptr, ptr %i5, align 8, !invariant.load !6 58 %i7 = tail call i64 %i6(ptr %arg1) #1 59 %i9 = load ptr, ptr %arg2, align 8 60 store i8 0, ptr %i9, align 1 61 br i1 %arg4, label %bb10, label %bb29 62 63bb10: ; preds = %bb 64 br label %bb12 65 66bb12: ; preds = %bb28, %bb10 67 %i13 = load ptr, ptr %arg1, align 8, !invariant.group !6 68 %i14 = getelementptr inbounds ptr, ptr %i13, i64 22 69 %i15 = load ptr, ptr %i14, align 8, !invariant.load !6 70 %i16 = call i64 %i15(ptr nonnull %arg1, ptr null, i64 0) #1 71 br i1 %arg4, label %bb28, label %bb17 72 73bb17: ; preds = %bb12 74 br i1 %arg4, label %bb18, label %bb21 75 76bb18: ; preds = %bb17 77 br label %bb19 78 79bb19: ; preds = %bb18 80 br label %bb20 81 82bb20: ; preds = %bb19 83 br label %bb28 84 85bb21: ; preds = %bb17 86 br label %bb22 87 88bb22: ; preds = %bb21 89 br label %bb23 90 91bb23: ; preds = %bb22 92 br label %bb24 93 94bb24: ; preds = %bb23 95 br i1 %arg4, label %bb25, label %bb26 96 97bb25: ; preds = %bb24 98 br label %bb28 99 100bb26: ; preds = %bb24 101 br label %bb27 102 103bb27: ; preds = %bb26 104 br label %bb28 105 106bb28: ; preds = %bb27, %bb25, %bb20, %bb12 107 br i1 %arg4, label %bb12, label %bb29 108 109bb29: ; preds = %bb28, %bb 110 ret void 111} 112 113attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="non-leaf" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 114attributes #1 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="non-leaf" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 115 116!llvm.linker.options = !{} 117!llvm.module.flags = !{!0, !1, !3, !4, !5} 118 119!0 = !{i32 1, !"StrictVTablePointers", i32 1} 120!1 = !{i32 3, !"StrictVTablePointersRequirement", !2} 121!2 = !{!"StrictVTablePointers", i32 1} 122!3 = !{i32 1, !"wchar_size", i32 4} 123!4 = !{i32 8, !"PIC Level", i32 2} 124!5 = !{i32 7, !"PIE Level", i32 2} 125!6 = !{} 126