derek.holloway
7502bf64a4
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50 lines
1.4 KiB
LLVM
50 lines
1.4 KiB
LLVM
; RUN: opt -passes=aa-eval -print-all-alias-modref-info -disable-output < %s 2>&1 | FileCheck %s
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; CHECK: MayAlias: i8* %a, i8* %gep
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define void @inttoptr_alloca() {
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%a = alloca i8
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%a.int = ptrtoint ptr %a to i64
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%a.int.1 = add i64 %a.int, 1
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%gep = getelementptr i8, ptr inttoptr (i64 -1 to ptr), i64 %a.int.1
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%load = load i8, ptr %gep
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store i8 1, ptr %a
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ret void
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}
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; CHECK: MayAlias: i8* %a, i8* %gep
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define void @inttoptr_alloca_unknown_relation(i64 %offset) {
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%a = alloca i8
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%a.int = ptrtoint ptr %a to i64
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%gep = getelementptr i8, ptr inttoptr (i64 -1 to ptr), i64 %offset
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%load = load i8, ptr %gep
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store i8 1, ptr %a
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ret void
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}
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; CHECK: NoAlias: i8* %a, i8* %gep
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define void @inttoptr_alloca_noescape(i64 %offset) {
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%a = alloca i8
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%gep = getelementptr i8, ptr inttoptr (i64 -1 to ptr), i64 %offset
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%load = load i8, ptr %gep
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store i8 1, ptr %a
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ret void
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}
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; CHECK: MayAlias: i8* %a, i8* %gep
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define void @inttoptr_noalias(ptr noalias %a) {
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%a.int = ptrtoint ptr %a to i64
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%a.int.1 = add i64 %a.int, 1
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%gep = getelementptr i8, ptr inttoptr (i64 -1 to ptr), i64 %a.int.1
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%load = load i8, ptr %gep
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store i8 1, ptr %a
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ret void
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}
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; CHECK: NoAlias: i8* %a, i8* %gep
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define void @inttoptr_noalias_noescape(ptr noalias %a, i64 %offset) {
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%gep = getelementptr i8, ptr inttoptr (i64 -1 to ptr), i64 %offset
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%load = load i8, ptr %gep
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store i8 1, ptr %a
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ret void
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}
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