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|
; RUN: opt < %s -aa-pipeline=tbaa,basic-aa -passes=aa-eval -evaluate-aa-metadata \
; RUN: -print-no-aliases -print-may-aliases -disable-output 2>&1 | \
; RUN: FileCheck %s
; RUN: opt < %s -aa-pipeline=tbaa,basic-aa -passes=gvn -S | FileCheck %s --check-prefix=OPT
;
; Check that TBAA handles access tags with aggregate final access types
; correctly.
%A = type { i32 } ; struct A { int i; };
%B = type { %A } ; struct B { A a; };
%C = type { %B } ; struct C { B b; };
%D = type { i16 } ; struct D { short s; };
; int vs. A::i => MayAlias.
define i32 @f1(ptr %i, ptr %a) {
entry:
; CHECK-LABEL: f1
; CHECK: MayAlias: store i32 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f1
; OPT: store i32 5,
; OPT: store i32 7,
; OPT: %[[RET:.*]] = load i32,
; OPT: ret i32 %[[RET]]
store i32 5, ptr %i, align 4, !tbaa !3 ; TAG_int
store i32 7, ptr %a, align 4, !tbaa !5 ; TAG_A_i
%0 = load i32, ptr %i, align 4, !tbaa !3 ; TAG_int
ret i32 %0
}
; int vs. B::a => MayAlias.
define i32 @f2(ptr %i, ptr %b) {
entry:
; CHECK-LABEL: f2
; CHECK: MayAlias: store i32 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f2
; OPT: store i32 5,
; OPT: store i32 7,
; OPT: %[[RET:.*]] = load i32,
; OPT: ret i32 %[[RET]]
store i32 5, ptr %i, align 4, !tbaa !3 ; TAG_int
store i32 7, ptr %b, align 4, !tbaa !7 ; TAG_B_a
%0 = load i32, ptr %i, align 4, !tbaa !3 ; TAG_int
ret i32 %0
}
; int vs. C::b => MayAlias.
define i32 @f3(ptr %i, ptr %c) {
entry:
; CHECK-LABEL: f3
; CHECK: MayAlias: store i32 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f3
; OPT: store i32 5,
; OPT: store i32 7,
; OPT: %[[RET:.*]] = load i32,
; OPT: ret i32 %[[RET]]
store i32 5, ptr %i, align 4, !tbaa !3 ; TAG_int
store i32 7, ptr %c, align 4, !tbaa !9 ; TAG_C_b
%0 = load i32, ptr %i, align 4, !tbaa !3 ; TAG_int
ret i32 %0
}
; A vs. C::b => MayAlias.
define i32 @f4(ptr %a, ptr %c) {
entry:
; CHECK-LABEL: f4
; CHECK: MayAlias: store i32 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f4
; OPT: store i32 5,
; OPT: store i32 7,
; OPT: %[[RET:.*]] = load i32,
; OPT: ret i32 %[[RET]]
store i32 5, ptr %a, align 4, !tbaa !10 ; TAG_A
store i32 7, ptr %c, align 4, !tbaa !9 ; TAG_C_b
%0 = load i32, ptr %a, align 4, !tbaa !10 ; TAG_A
ret i32 %0
}
; short vs. C::b => NoAlias.
define i32 @f5(ptr %i, ptr %c) {
entry:
; CHECK-LABEL: f5
; CHECK: NoAlias: store i32 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f5
; OPT: store i32 5,
; OPT: store i32 7,
; OPT: ret i32 5
store i32 5, ptr %i, align 4, !tbaa !12 ; TAG_short
store i32 7, ptr %c, align 4, !tbaa !9 ; TAG_C_b
%0 = load i32, ptr %i, align 4, !tbaa !12 ; TAG_short
ret i32 %0
}
; C vs. D => NoAlias.
define i32 @f6(ptr %c, ptr %d) {
entry:
; CHECK-LABEL: f6
; CHECK: NoAlias: store i16 7, {{.*}} <-> store i32 5,
; OPT-LABEL: f6
; OPT: store i32 5,
; OPT: store i16 7,
; OPT: ret i32 5
store i32 5, ptr %c, align 4, !tbaa !13 ; TAG_C
store i16 7, ptr %d, align 4, !tbaa !15 ; TAG_D
%0 = load i32, ptr %c, align 4, !tbaa !13 ; TAG_C
ret i32 %0
}
!0 = !{!"root"}
!1 = !{!0, i64 1, !"char"}
!2 = !{!1, i64 4, !"int"}
!3 = !{!2, !2, i64 0, i64 4} ; TAG_int
!4 = !{!1, i64 4, !"A", !2, i64 0, i64 4}
!5 = !{!4, !2, i64 0, i64 4} ; TAG_A_i
!6 = !{!1, i64 4, !"B", !4, i64 0, i64 4}
!7 = !{!6, !4, i64 0, i64 4} ; TAG_B_a
!8 = !{!1, i64 4, !"C", !6, i64 0, i64 4}
!9 = !{!8, !6, i64 0, i64 4} ; TAG_C_b
!10 = !{!4, !4, i64 0, i64 4} ; TAG_A
!11 = !{!1, i64 2, !"short"}
!12 = !{!11, !11, i64 0, i64 2} ; TAG_short
!13 = !{!8, !8, i64 0, i64 4} ; TAG_C
!14 = !{!4, i64 2, !"D", !11, i64 0, i64 2}
!15 = !{!14, !14, i64 0, i64 2} ; TAG_D
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