derek.holloway
7502bf64a4
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108 lines
3.0 KiB
LLVM
108 lines
3.0 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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target datalayout = "p:64:64"
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declare void @escape(ptr %ptr)
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; Verify that unescaped noalias parameter does not alias inttoptr
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define void @test1(ptr noalias %P, i64 %Q_as_int) {
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; CHECK-LABEL: Function: test1:
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; CHECK: NoAlias: i8* %P, i8* %Q
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Verify that unescaped alloca does not alias inttoptr
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define void @test2(i64 %Q_as_int) {
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; CHECK-LABEL: Function: test2:
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; CHECK: NoAlias: i8* %P, i8* %Q
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%P = alloca i8
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Verify that escaped noalias parameter may alias inttoptr
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define void @test3(ptr noalias %P, i64 %Q_as_int) {
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; CHECK-LABEL: Function: test3:
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; CHECK: MayAlias: i8* %P, i8* %Q
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call void @escape(ptr %P)
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Verify that escaped alloca may alias inttoptr
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define void @test4(i64 %Q_as_int) {
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; CHECK-LABEL: Function: test4:
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; CHECK: MayAlias: i8* %P, i8* %Q
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%P = alloca i8
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call void @escape(ptr %P)
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Verify that global may alias inttoptr
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@G = external global i8
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define void @test5(i64 %Q_as_int) {
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; CHECK-LABEL: Function: test5:
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; CHECK: MayAlias: i8* %Q, i8* @G
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr @G
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store i8 1, ptr %Q
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ret void
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}
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; Verify that extractvalue of a coerced ptr argument array are NoAlias a function local object
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define void @test_extractvalue([2 x ptr] %Q.coerce) {
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; CHECK-LABEL: Function: test_extractvalue:
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; CHECK: NoAlias: i8* %P, i8* %Q
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%P = alloca i8
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%Q = extractvalue [2 x ptr] %Q.coerce, 1
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Same as test_extractvalue with an escape of %P
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define void @test_extractvalue_escape([2 x ptr] %Q.coerce) {
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; CHECK-LABEL: Function: test_extractvalue_escape:
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; CHECK: NoAlias: i8* %P, i8* %Q
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%P = alloca i8
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call void @escape(ptr %P)
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%Q = extractvalue [2 x ptr] %Q.coerce, 1
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Verify that extractvalue of a coerced ptr argument array are NoAlias a function local object
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define void @test_extractvalue_int([2 x i64] %Q.coerce) {
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; CHECK-LABEL: Function: test_extractvalue_int:
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; CHECK: NoAlias: i8* %P, i8* %Q
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%P = alloca i8
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%Q_as_int = extractvalue [2 x i64] %Q.coerce, 1
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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}
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; Same as test_extractvalue_int with an escape of %P
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define void @test_extractvalue_int_escape([2 x i64] %Q.coerce) {
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; CHECK-LABEL: Function: test_extractvalue_int_escape:
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; CHECK: MayAlias: i8* %P, i8* %Q
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%P = alloca i8
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call void @escape(ptr %P)
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%Q_as_int = extractvalue [2 x i64] %Q.coerce, 1
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%Q = inttoptr i64 %Q_as_int to ptr
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store i8 0, ptr %P
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store i8 1, ptr %Q
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ret void
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} |