derek.holloway
7502bf64a4
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136 lines
5.8 KiB
LLVM
136 lines
5.8 KiB
LLVM
; RUN: opt -passes='print<alias-sets>' -S -o - < %s 2>&1 | FileCheck %s
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@s = global i8 1, align 1
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@d = global i8 2, align 1
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; CHECK: Alias sets for function 'test_alloca_argmemonly':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 3 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %a, LocationSize::precise(1))
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 2] may alias, Mod/Ref Memory locations: (ptr %d, unknown before-or-after), (ptr %s, unknown before-or-after)
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define void @test_alloca_argmemonly(ptr %s, ptr %d) {
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entry:
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%a = alloca i8, align 1
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store i8 1, ptr %a, align 1
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call void @my_memcpy(ptr %d, ptr %s, i64 1)
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ret void
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}
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; CHECK: Alias sets for function 'test_readonly_arg'
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %d, unknown before-or-after)
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Ref Memory locations: (ptr %s, unknown before-or-after), (ptr %s, LocationSize::precise(1))
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define i8 @test_readonly_arg(ptr noalias %s, ptr noalias %d) {
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entry:
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call void @my_memcpy(ptr %d, ptr %s, i64 1)
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%ret = load i8, ptr %s
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ret i8 %ret
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}
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; CHECK: Alias sets for function 'test_noalias_argmemonly':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 3 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %a, LocationSize::precise(1))
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 2] may alias, Mod/Ref Memory locations: (ptr %d, unknown before-or-after), (ptr %s, unknown before-or-after)
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define void @test_noalias_argmemonly(ptr noalias %a, ptr %s, ptr %d) {
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entry:
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store i8 1, ptr %a, align 1
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call void @my_memmove(ptr %d, ptr %s, i64 1)
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ret void
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}
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; CHECK: Alias sets for function 'test5':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod/Ref Memory locations: (ptr %a, LocationSize::precise(1)), (ptr %a, unknown before-or-after)
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %b, unknown before-or-after), (ptr %b, LocationSize::precise(1))
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define void @test5(ptr noalias %a, ptr noalias %b) {
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entry:
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store i8 1, ptr %a, align 1
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call void @my_memcpy(ptr %b, ptr %a, i64 1)
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store i8 1, ptr %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test_argcollapse':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod/Ref Memory locations: (ptr %a, LocationSize::precise(1)), (ptr %a, unknown before-or-after)
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod/Ref Memory locations: (ptr %b, unknown before-or-after), (ptr %b, LocationSize::precise(1))
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define void @test_argcollapse(ptr noalias %a, ptr noalias %b) {
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entry:
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store i8 1, ptr %a, align 1
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call void @my_memmove(ptr %b, ptr %a, i64 1)
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store i8 1, ptr %b, align 1
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ret void
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}
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; CHECK: Alias sets for function 'test_memcpy1':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod/Ref Memory locations: (ptr %b, unknown before-or-after)
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod/Ref Memory locations: (ptr %a, unknown before-or-after)
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define void @test_memcpy1(ptr noalias %a, ptr noalias %b) {
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entry:
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call void @my_memcpy(ptr %b, ptr %a, i64 1)
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call void @my_memcpy(ptr %a, ptr %b, i64 1)
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ret void
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}
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; CHECK: Alias sets for function 'test_memset1':
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; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 1 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %a, unknown before-or-after)
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define void @test_memset1() {
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entry:
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%a = alloca i8, align 1
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call void @my_memset(ptr %a, i8 0, i64 1)
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ret void
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}
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; CHECK: Alias sets for function 'test_memset2':
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; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 1 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %a, unknown before-or-after)
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define void @test_memset2(ptr %a) {
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entry:
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call void @my_memset(ptr %a, i8 0, i64 1)
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ret void
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}
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; CHECK: Alias sets for function 'test_memset3':
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; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 2] may alias, Mod Memory locations: (ptr %a, unknown before-or-after), (ptr %b, unknown before-or-after)
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define void @test_memset3(ptr %a, ptr %b) {
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entry:
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call void @my_memset(ptr %a, i8 0, i64 1)
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call void @my_memset(ptr %b, i8 0, i64 1)
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ret void
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}
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;; PICKUP HERE
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; CHECK: Alias sets for function 'test_memset4':
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; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 2 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %a, unknown before-or-after)
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Memory locations: (ptr %b, unknown before-or-after)
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define void @test_memset4(ptr noalias %a, ptr noalias %b) {
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entry:
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call void @my_memset(ptr %a, i8 0, i64 1)
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call void @my_memset(ptr %b, i8 0, i64 1)
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ret void
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}
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declare void @my_memset(ptr nocapture writeonly, i8, i64) argmemonly
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declare void @my_memcpy(ptr nocapture writeonly, ptr nocapture readonly, i64) argmemonly
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declare void @my_memmove(ptr nocapture, ptr nocapture readonly, i64) argmemonly
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; CHECK: Alias sets for function 'test_attribute_intersect':
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; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 1 pointer values.
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; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Ref Memory locations: (ptr %a, LocationSize::precise(1))
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define i8 @test_attribute_intersect(ptr noalias %a) {
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entry:
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;; This call is effectively readnone since the argument is readonly
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;; and the function is declared writeonly.
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call void @attribute_intersect(ptr %a)
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%val = load i8, ptr %a
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ret i8 %val
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}
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declare void @attribute_intersect(ptr readonly) argmemonly writeonly
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