370607065d
Tests exercizing TBAA metadata (both purposefully and not), and previously generated via UTC, have been regenerated and updated to version 6.
115 lines
5.3 KiB
LLVM
115 lines
5.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt < %s -passes=loop-versioning -S -o - | FileCheck %s
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; This test case used to end like this:
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;
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; Instruction does not dominate all uses!
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; %t2 = load i16, i16* @b, align 1, !tbaa !2, !alias.scope !6
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; %tobool = icmp eq i16 %t2, 0
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; LLVM ERROR: Broken function found, compilation aborted!
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;
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; due to a fault where we did not replace the use of %t2 in the icmp in
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; for.end, when adding a new PHI node for the versioned loops based on the
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; loop-defined values used outside of the loop.
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;
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; Verify that the code compiles, that we get a versioned loop, and that the
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; uses of %t2 in for.end and if.then are updated to use the value from the
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; added phi node.
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@a = dso_local global i16 0, align 1
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@b = dso_local global i16 0, align 1
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@c = dso_local global ptr null, align 1
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define void @f1() {
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; CHECK-LABEL: define void @f1() {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[T0:%.*]] = load ptr, ptr @c, align 1
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; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[T0]], i64 2
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; CHECK-NEXT: br label %[[FOR_BODY_LVER_CHECK:.*]]
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; CHECK: [[FOR_BODY_LVER_CHECK]]:
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; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[T0]], getelementptr inbounds nuw (i8, ptr @b, i64 2)
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; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr @b, [[SCEVGEP]]
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; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
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; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label %[[FOR_BODY_PH_LVER_ORIG:.*]], label %[[FOR_BODY_PH:.*]]
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; CHECK: [[FOR_BODY_PH_LVER_ORIG]]:
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; CHECK-NEXT: br label %[[FOR_BODY_LVER_ORIG:.*]]
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; CHECK: [[FOR_BODY_LVER_ORIG]]:
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; CHECK-NEXT: [[T1_LVER_ORIG:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH_LVER_ORIG]] ], [ [[INC_LVER_ORIG:%.*]], %[[FOR_BODY_LVER_ORIG]] ]
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; CHECK-NEXT: [[T2_LVER_ORIG:%.*]] = load i16, ptr @b, align 1, !tbaa [[LONG_LONG_TBAA2:![0-9]+]]
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; CHECK-NEXT: store i16 [[T2_LVER_ORIG]], ptr [[T0]], align 1, !tbaa [[LONG_LONG_TBAA2]]
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; CHECK-NEXT: [[INC_LVER_ORIG]] = add nuw nsw i64 [[T1_LVER_ORIG]], 1
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; CHECK-NEXT: [[CMP_LVER_ORIG:%.*]] = icmp ult i64 [[INC_LVER_ORIG]], 3
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; CHECK-NEXT: br i1 [[CMP_LVER_ORIG]], label %[[FOR_BODY_LVER_ORIG]], label %[[FOR_END_LOOPEXIT:.*]]
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; CHECK: [[FOR_BODY_PH]]:
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; CHECK-NEXT: br label %[[FOR_BODY:.*]]
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; CHECK: [[FOR_BODY]]:
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; CHECK-NEXT: [[T1:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
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; CHECK-NEXT: [[T2:%.*]] = load i16, ptr @b, align 1, !tbaa [[LONG_LONG_TBAA2]], !alias.scope [[META6:![0-9]+]]
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; CHECK-NEXT: store i16 [[T2]], ptr [[T0]], align 1, !tbaa [[LONG_LONG_TBAA2]], !alias.scope [[META9:![0-9]+]], !noalias [[META6]]
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; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[T1]], 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[INC]], 3
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; CHECK-NEXT: br i1 [[CMP]], label %[[FOR_BODY]], label %[[FOR_END_LOOPEXIT1:.*]]
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; CHECK: [[FOR_END_LOOPEXIT]]:
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; CHECK-NEXT: [[T2_LVER_PH:%.*]] = phi i16 [ [[T2_LVER_ORIG]], %[[FOR_BODY_LVER_ORIG]] ]
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; CHECK-NEXT: br label %[[FOR_END:.*]]
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; CHECK: [[FOR_END_LOOPEXIT1]]:
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; CHECK-NEXT: [[T2_LVER_PH2:%.*]] = phi i16 [ [[T2]], %[[FOR_BODY]] ]
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; CHECK-NEXT: br label %[[FOR_END]]
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; CHECK: [[FOR_END]]:
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; CHECK-NEXT: [[T2_LVER:%.*]] = phi i16 [ [[T2_LVER_PH]], %[[FOR_END_LOOPEXIT]] ], [ [[T2_LVER_PH2]], %[[FOR_END_LOOPEXIT1]] ]
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 [[T2_LVER]], 0
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; CHECK-NEXT: br i1 [[TOBOOL]], label %[[FOR_COND_BACKEDGE:.*]], label %[[IF_THEN:.*]]
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; CHECK: [[FOR_COND_BACKEDGE]]:
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; CHECK-NEXT: br label %[[FOR_BODY_LVER_CHECK]]
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; CHECK: [[IF_THEN]]:
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; CHECK-NEXT: store i16 [[T2_LVER]], ptr @a, align 1, !tbaa [[LONG_LONG_TBAA2]]
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; CHECK-NEXT: br label %[[FOR_COND_BACKEDGE]]
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;
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entry:
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%t0 = load ptr, ptr @c, align 1
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br label %for.cond
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for.cond: ; preds = %for.cond.backedge, %entry
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br label %for.body
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for.body: ; preds = %for.cond, %for.body
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%t1 = phi i64 [ 0, %for.cond ], [ %inc, %for.body ]
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%t2 = load i16, ptr @b, align 1, !tbaa !2
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store i16 %t2, ptr %t0, align 1, !tbaa !2
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%inc = add nuw nsw i64 %t1, 1
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%cmp = icmp ult i64 %inc, 3
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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%tobool = icmp eq i16 %t2, 0
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br i1 %tobool, label %for.cond.backedge, label %if.then
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for.cond.backedge: ; preds = %for.end, %if.then
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br label %for.cond
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if.then: ; preds = %for.end
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store i16 %t2, ptr @a, align 1, !tbaa !2
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br label %for.cond.backedge
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}
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 1}
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!1 = !{!"clang version 7.0.0"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"long long", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C/C++ TBAA"}
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;.
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; CHECK: [[LONG_LONG_TBAA2]] = !{[[META3:![0-9]+]], [[META3]], i64 0}
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; CHECK: [[META3]] = !{!"long long", [[META4:![0-9]+]], i64 0}
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; CHECK: [[META4]] = !{!"omnipotent char", [[META5:![0-9]+]], i64 0}
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; CHECK: [[META5]] = !{!"Simple C/C++ TBAA"}
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; CHECK: [[META6]] = !{[[META7:![0-9]+]]}
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; CHECK: [[META7]] = distinct !{[[META7]], [[META8:![0-9]+]]}
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; CHECK: [[META8]] = distinct !{[[META8]], !"LVerDomain"}
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; CHECK: [[META9]] = !{[[META10:![0-9]+]]}
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; CHECK: [[META10]] = distinct !{[[META10]], [[META8]]}
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;.
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