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Add a simple testcase for tbaa.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116272 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-10-11 23:54:13 +00:00
parent 08cec1ef27
commit c015723131
2 changed files with 61 additions and 0 deletions
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58
test/Analysis/TypeBasedAliasAnalysis/aliastest.ll Normal file
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; RUN: opt < %s -tbaa -gvn -S | FileCheck %s
; CHECK: @test0_yes
; CHECK: add i8 %x, %x
define i8 @test0_yes(i8* %a, i8* %b) nounwind {
%x = load i8* %a, !tbaa !1
store i8 0, i8* %b, !tbaa !2
%y = load i8* %a, !tbaa !1
%z = add i8 %x, %y
ret i8 %z
}
; CHECK: @test0_no
; CHECK: add i8 %x, %y
define i8 @test0_no(i8* %a, i8* %b) nounwind {
%x = load i8* %a, !tbaa !3
store i8 0, i8* %b, !tbaa !4
%y = load i8* %a, !tbaa !3
%z = add i8 %x, %y
ret i8 %z
}
; CHECK: @test1_yes
; CHECK: add i8 %x, %x
define i8 @test1_yes(i8* %a, i8* %b) nounwind {
%x = load i8* %a, !tbaa !5
store i8 0, i8* %b
%y = load i8* %a, !tbaa !5
%z = add i8 %x, %y
ret i8 %z
}
; CHECK: @test1_no
; CHECK: add i8 %x, %y
define i8 @test1_no(i8* %a, i8* %b) nounwind {
%x = load i8* %a, !tbaa !6
store i8 0, i8* %b
%y = load i8* %a, !tbaa !6
%z = add i8 %x, %y
ret i8 %z
}
; Root note.
!0 = metadata !{ }
; Some type.
!1 = metadata !{ metadata !"foo", metadata !0 }
; Some other non-aliasing type.
!2 = metadata !{ metadata !"bar", metadata !0 }
; Some type.
!3 = metadata !{ metadata !"foo", metadata !0 }
; Some type in a different type system.
!4 = metadata !{ metadata !"bar", metadata !"different" }
; Invariant memory.
!5 = metadata !{ metadata !"qux", metadata !0, i1 1 }
; Not invariant memory.
!6 = metadata !{ metadata !"qux", metadata !0, i1 0 }

3
test/Analysis/TypeBasedAliasAnalysis/dg.exp Normal file
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load_lib llvm.exp
RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,c,cpp}]]