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https://github.com/c64scene-ar/llvm-6502.git
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9e81c3bdb2
Remove the command line argument "struct-path-tbaa" since we should not depend on command line argument to decide which format the IR file is using. Instead, we check the first operand of the tbaa tag node, if it is a MDNode, we treat it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA format. When clang starts to use struct-path aware TBAA format no matter whether struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support for scalar TBAA format can be dropped. Existing testing cases are updated to use the struct-path aware TBAA format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
1.8 KiB
LLVM
72 lines
1.8 KiB
LLVM
; RUN: opt < %s -tbaa -basicaa -dse -S | FileCheck %s
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; DSE should make use of TBAA.
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; CHECK: @test0_yes
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; CHECK-NEXT: load i8* %b
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; CHECK-NEXT: store i8 1, i8* %a
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; CHECK-NEXT: ret i8 %y
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define i8 @test0_yes(i8* %a, i8* %b) nounwind {
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store i8 0, i8* %a, !tbaa !1
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%y = load i8* %b, !tbaa !2
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store i8 1, i8* %a, !tbaa !1
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ret i8 %y
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}
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; CHECK: @test0_no
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; CHECK-NEXT: store i8 0, i8* %a
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; CHECK-NEXT: load i8* %b
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; CHECK-NEXT: store i8 1, i8* %a
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; CHECK-NEXT: ret i8 %y
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define i8 @test0_no(i8* %a, i8* %b) nounwind {
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store i8 0, i8* %a, !tbaa !3
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%y = load i8* %b, !tbaa !4
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store i8 1, i8* %a, !tbaa !3
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ret i8 %y
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}
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; CHECK: @test1_yes
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; CHECK-NEXT: load i8* %b
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; CHECK-NEXT: store i8 1, i8* %a
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; CHECK-NEXT: ret i8 %y
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define i8 @test1_yes(i8* %a, i8* %b) nounwind {
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store i8 0, i8* %a
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%y = load i8* %b, !tbaa !5
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store i8 1, i8* %a
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ret i8 %y
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}
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; CHECK: @test1_no
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; CHECK-NEXT: store i8 0, i8* %a
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; CHECK-NEXT: load i8* %b
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; CHECK-NEXT: store i8 1, i8* %a
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; CHECK-NEXT: ret i8 %y
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define i8 @test1_no(i8* %a, i8* %b) nounwind {
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store i8 0, i8* %a
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%y = load i8* %b, !tbaa !6
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store i8 1, i8* %a
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ret i8 %y
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}
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; Root note.
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!0 = metadata !{ }
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; Some type.
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!1 = metadata !{metadata !7, metadata !7, i64 0}
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; Some other non-aliasing type.
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!2 = metadata !{metadata !8, metadata !8, i64 0}
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; Some type.
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!3 = metadata !{metadata !9, metadata !9, i64 0}
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; Some type in a different type system.
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!4 = metadata !{metadata !10, metadata !10, i64 0}
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; Invariant memory.
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!5 = metadata !{metadata !11, metadata !11, i64 0, i1 1}
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; Not invariant memory.
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!6 = metadata !{metadata !11, metadata !11, i64 0, i1 0}
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!7 = metadata !{ metadata !"foo", metadata !0 }
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!8 = metadata !{ metadata !"bar", metadata !0 }
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!9 = metadata !{ metadata !"foo", metadata !0 }
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!10 = metadata !{ metadata !"bar", metadata !"different" }
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!11 = metadata !{ metadata !"qux", metadata !0}
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