derek.holloway
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44 lines
1.8 KiB
LLVM
44 lines
1.8 KiB
LLVM
; We want BasicAA to make a reasonable conservative guess as to context for
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; separate storage hints. This lets alias analysis users (such as the alias set
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; tracker) who can't be context-sensitive still get the benefits of hints.
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; RUN: opt < %s -basic-aa-separate-storage -S -passes='print<alias-sets>' 2>&1 | FileCheck %s
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declare void @llvm.assume(i1)
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; CHECK-LABEL: Alias sets for function 'arg_arg'
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %a1, LocationSize::precise(1))
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %a2, LocationSize::precise(1))
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define void @arg_arg(ptr %a1, ptr %a2) {
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entry:
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call void @llvm.assume(i1 true) [ "separate_storage"(ptr %a1, ptr %a2) ]
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%0 = load i8, ptr %a1
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%1 = load i8, ptr %a2
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ret void
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}
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; CHECK-LABEL: Alias sets for function 'arg_inst'
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %a1, LocationSize::precise(1))
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %0, LocationSize::precise(1))
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define void @arg_inst(ptr %a1, ptr %a2) {
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entry:
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%0 = getelementptr inbounds i8, ptr %a2, i64 20
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call void @llvm.assume(i1 true) [ "separate_storage"(ptr %a1, ptr %0) ]
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%1 = load i8, ptr %a1
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%2 = load i8, ptr %0
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ret void
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}
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; CHECK-LABEL: Alias sets for function 'inst_inst'
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %0, LocationSize::precise(1))
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; CHECK: AliasSet[{{.*}}, 1] must alias, Ref Memory locations: (ptr %1, LocationSize::precise(1))
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define void @inst_inst(ptr %a1, ptr %a2) {
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entry:
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%0 = getelementptr inbounds i8, ptr %a1, i64 20
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%1 = getelementptr inbounds i8, ptr %a2, i64 20
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call void @llvm.assume(i1 true) [ "separate_storage"(ptr %0, ptr %1) ]
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%2 = load i8, ptr %0
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%3 = load i8, ptr %1
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ret void
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}
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