57d57b1afd
With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
254 lines
8.7 KiB
LLVM
254 lines
8.7 KiB
LLVM
; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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%struct.S = type { i32, [2 x i32], i32 }
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%struct.S2 = type { i32, [4 x i32], [4 x i32] }
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; CHECK: Function: t1
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t1(%struct.S* %s) {
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 1
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 0
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t2_fwd
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t2_fwd(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 0
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t2_rev
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t2_rev(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 0
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t3_fwd
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t3_fwd(%struct.S* %s, i32* %q) {
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%knownzero = load i32, i32* %q, !range !1
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %knownzero
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 1
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t3_rev
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t3_rev(%struct.S* %s, i32* %q) {
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%knownzero = load i32, i32* %q, !range !1
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 1
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %knownzero
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: member_after
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @member_after(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 2
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: member_after_rev
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @member_after_rev(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 2
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: member_before
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @member_before(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 0
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: member_before_rev
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @member_before_rev(%struct.S* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !0
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%gep2 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 0
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%gep1 = getelementptr inbounds %struct.S, %struct.S* %s, i64 0, i32 1, i32 %in_array
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t5
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -4): i32* %gep2, %struct.S2* %s
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t5(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !3
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 1, i32 0
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load %struct.S2, %struct.S2* %s
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t6
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -16): i32* %gep2, %struct.S2* %s
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t6(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !3
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 1, i32 3
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load %struct.S2, %struct.S2* %s
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t7
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -20): i32* %gep2, %struct.S2* %s
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t7(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !4
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 0
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load %struct.S2, %struct.S2* %s
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t8
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -24): i32* %gep2, %struct.S2* %s
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t8(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !4
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 1
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load %struct.S2, %struct.S2* %s
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load i32, i32* %q
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t9
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -20): i32* %gep2, %struct.S2* %s
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t9(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !5
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 1, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 0
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load %struct.S2, %struct.S2* %s
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: t10
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; CHECK: MayAlias: i32* %gep1, %struct.S2* %s
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; CHECK: PartialAlias (off -4): i32* %gep2, %struct.S2* %s
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t10(%struct.S2* %s, i32* %q) {
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%in_array = load i32, i32* %q, !range !5
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%gep1 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 2, i32 %in_array
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%gep2 = getelementptr inbounds %struct.S2, %struct.S2* %s, i64 0, i32 1, i32 0
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load %struct.S2, %struct.S2* %s
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: zeroext_index
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; CHECK: MayAlias: i32* %gep, [256 x i32]* %s
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define void @zeroext_index([256 x i32]* %s, i8* %q) {
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%a = load i8, i8* %q, !range !6
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%in_array = zext i8 %a to i32
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%gep = getelementptr inbounds [256 x i32], [256 x i32]* %s, i64 0, i32 %in_array
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load [256 x i32], [256 x i32]* %s
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load i32, i32* %gep
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ret void
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}
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; CHECK-LABEL: Function: multiple
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; CHECK: MayAlias: i32* %p, i32* %p.01
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; CHECK: MayAlias: i32* %p, i32* %p.02
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; CHECK: MayAlias: i32* %p.01, i32* %p.02
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; CHECK: NoAlias: i32* %p.01, i32* %p.2
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; CHECK: MayAlias: i32* %p.02, i32* %p.2
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; CHECK: NoAlias: i32* %p.01, i32* %p.3
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; CHECK: NoAlias: i32* %p.02, i32* %p.3
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define void @multiple(i32* %p, i32* %o1_ptr, i32* %o2_ptr) {
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%o1 = load i32, i32* %o1_ptr, !range !0
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%o2 = load i32, i32* %o2_ptr, !range !0
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%p.01 = getelementptr i32, i32* %p, i32 %o1 ; p + [0, 1]
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%p.02 = getelementptr i32, i32* %p.01, i32 %o2 ; p + [0, 2]
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%p.2 = getelementptr i32, i32* %p, i32 2
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%p.3 = getelementptr i32, i32* %p, i32 3
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load i32, i32* %p
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load i32, i32* %p.01
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load i32, i32* %p.02
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load i32, i32* %p.2
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load i32, i32* %p.3
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ret void
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}
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; p.neg1 and p.o.1 don't alias, even though the addition o+1 may overflow.
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; While it makes INT_MIN a possible offset, offset -1 is not possible.
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; CHECK-LABEL: Function: benign_overflow
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; CHECK: MayAlias: i8* %p, i8* %p.o
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; CHECK: MayAlias: i8* %p.neg1, i8* %p.o
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; CHECK: MayAlias: i8* %p, i8* %p.o.1
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; CHECK: NoAlias: i8* %p.neg1, i8* %p.o.1
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; CHECK: NoAlias: i8* %p.o, i8* %p.o.1
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define void @benign_overflow(i8* %p, i64 %o) {
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%c = icmp sge i64 %o, -1
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call void @llvm.assume(i1 %c)
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%p.neg1 = getelementptr i8, i8* %p, i64 -1
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%p.o = getelementptr i8, i8* %p, i64 %o
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%p.o.1 = getelementptr i8, i8* %p.o, i64 1
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load i8, i8* %p
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load i8, i8* %p.neg1
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load i8, i8* %p.o
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load i8, i8* %p.o.1
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ret void
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}
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declare void @llvm.assume(i1)
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!0 = !{ i32 0, i32 2 }
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!1 = !{ i32 0, i32 1 }
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!2 = !{ i32 1, i32 2 }
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!3 = !{ i32 -2, i32 0 }
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!4 = !{ i32 1, i32 536870911 }
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!5 = !{ i32 -536870911, i32 4 }
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!6 = !{ i8 -2, i8 0 }
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