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llvm-6502/test/Analysis/TypeBasedAliasAnalysis/tbaa-path.ll
Manman Ren 9e81c3bdb2 TBAA: handle scalar TBAA format and struct-path aware TBAA format. 
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
2013-09-27 18:34:27 +00:00

393 lines
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; RUN: opt < %s -tbaa -basicaa -aa-eval -evaluate-tbaa -print-no-aliases -print-may-aliases -disable-output 2>&1 | FileCheck %s
; RUN: opt < %s -tbaa -basicaa -gvn -S | FileCheck %s --check-prefix=OPT
; Generated from clang/test/CodeGen/tbaa.cpp with "-O1 -struct-path-tbaa -disable-llvm-optzns".
%struct.StructA = type { i16, i32, i16, i32 }
%struct.StructB = type { i16, %struct.StructA, i32 }
%struct.StructS = type { i16, i32 }
%struct.StructS2 = type { i16, i32 }
%struct.StructC = type { i16, %struct.StructB, i32 }
%struct.StructD = type { i16, %struct.StructB, i32, i8 }
define i32 @_Z1gPjP7StructAy(i32* %s, %struct.StructA* %A, i64 %count) #0 {
entry:
; Access to i32* and &(A->f32).
; CHECK: Function
; CHECK: MayAlias: store i32 4, i32* %f32, align 4, !tbaa !8 <-> store i32 1, i32* %0, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; OPT: %[[RET:.*]] = load i32*
; OPT: ret i32 %[[RET]]
%s.addr = alloca i32*, align 8
%A.addr = alloca %struct.StructA*, align 8
%count.addr = alloca i64, align 8
store i32* %s, i32** %s.addr, align 8, !tbaa !0
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load i32** %s.addr, align 8, !tbaa !0
store i32 1, i32* %0, align 4, !tbaa !6
%1 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %1, i32 0, i32 1
store i32 4, i32* %f32, align 4, !tbaa !8
%2 = load i32** %s.addr, align 8, !tbaa !0
%3 = load i32* %2, align 4, !tbaa !6
ret i32 %3
}
define i32 @_Z2g2PjP7StructAy(i32* %s, %struct.StructA* %A, i64 %count) #0 {
entry:
; Access to i32* and &(A->f16).
; CHECK: Function
; CHECK: NoAlias: store i16 4, i16* %f16, align 2, !tbaa !8 <-> store i32 1, i32* %0, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i16 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%s.addr = alloca i32*, align 8
%A.addr = alloca %struct.StructA*, align 8
%count.addr = alloca i64, align 8
store i32* %s, i32** %s.addr, align 8, !tbaa !0
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load i32** %s.addr, align 8, !tbaa !0
store i32 1, i32* %0, align 4, !tbaa !6
%1 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f16 = getelementptr inbounds %struct.StructA* %1, i32 0, i32 0
store i16 4, i16* %f16, align 2, !tbaa !11
%2 = load i32** %s.addr, align 8, !tbaa !0
%3 = load i32* %2, align 4, !tbaa !6
ret i32 %3
}
define i32 @_Z2g3P7StructAP7StructBy(%struct.StructA* %A, %struct.StructB* %B, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(B->a.f32).
; CHECK: Function
; CHECK: MayAlias: store i32 4, i32* %f321, align 4, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; OPT: %[[RET:.*]] = load i32*
; OPT: ret i32 %[[RET]]
%A.addr = alloca %struct.StructA*, align 8
%B.addr = alloca %struct.StructB*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructB* %B, %struct.StructB** %B.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructB** %B.addr, align 8, !tbaa !0
%a = getelementptr inbounds %struct.StructB* %1, i32 0, i32 1
%f321 = getelementptr inbounds %struct.StructA* %a, i32 0, i32 1
store i32 4, i32* %f321, align 4, !tbaa !12
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f322 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f322, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g4P7StructAP7StructBy(%struct.StructA* %A, %struct.StructB* %B, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(B->a.f16).
; CHECK: Function
; CHECK: NoAlias: store i16 4, i16* %f16, align 2, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i16 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%A.addr = alloca %struct.StructA*, align 8
%B.addr = alloca %struct.StructB*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructB* %B, %struct.StructB** %B.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructB** %B.addr, align 8, !tbaa !0
%a = getelementptr inbounds %struct.StructB* %1, i32 0, i32 1
%f16 = getelementptr inbounds %struct.StructA* %a, i32 0, i32 0
store i16 4, i16* %f16, align 2, !tbaa !14
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f321, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g5P7StructAP7StructBy(%struct.StructA* %A, %struct.StructB* %B, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(B->f32).
; CHECK: Function
; CHECK: NoAlias: store i32 4, i32* %f321, align 4, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%A.addr = alloca %struct.StructA*, align 8
%B.addr = alloca %struct.StructB*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructB* %B, %struct.StructB** %B.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructB** %B.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructB* %1, i32 0, i32 2
store i32 4, i32* %f321, align 4, !tbaa !15
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f322 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f322, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g6P7StructAP7StructBy(%struct.StructA* %A, %struct.StructB* %B, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(B->a.f32_2).
; CHECK: Function
; CHECK: NoAlias: store i32 4, i32* %f32_2, align 4, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%A.addr = alloca %struct.StructA*, align 8
%B.addr = alloca %struct.StructB*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructB* %B, %struct.StructB** %B.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructB** %B.addr, align 8, !tbaa !0
%a = getelementptr inbounds %struct.StructB* %1, i32 0, i32 1
%f32_2 = getelementptr inbounds %struct.StructA* %a, i32 0, i32 3
store i32 4, i32* %f32_2, align 4, !tbaa !16
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f321, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g7P7StructAP7StructSy(%struct.StructA* %A, %struct.StructS* %S, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(S->f32).
; CHECK: Function
; CHECK: NoAlias: store i32 4, i32* %f321, align 4, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%A.addr = alloca %struct.StructA*, align 8
%S.addr = alloca %struct.StructS*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructS* %S, %struct.StructS** %S.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructS* %1, i32 0, i32 1
store i32 4, i32* %f321, align 4, !tbaa !17
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f322 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f322, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g8P7StructAP7StructSy(%struct.StructA* %A, %struct.StructS* %S, i64 %count) #0 {
entry:
; Access to &(A->f32) and &(S->f16).
; CHECK: Function
; CHECK: NoAlias: store i16 4, i16* %f16, align 2, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i16 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%A.addr = alloca %struct.StructA*, align 8
%S.addr = alloca %struct.StructS*, align 8
%count.addr = alloca i64, align 8
store %struct.StructA* %A, %struct.StructA** %A.addr, align 8, !tbaa !0
store %struct.StructS* %S, %struct.StructS** %S.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructA* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !8
%1 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f16 = getelementptr inbounds %struct.StructS* %1, i32 0, i32 0
store i16 4, i16* %f16, align 2, !tbaa !19
%2 = load %struct.StructA** %A.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructA* %2, i32 0, i32 1
%3 = load i32* %f321, align 4, !tbaa !8
ret i32 %3
}
define i32 @_Z2g9P7StructSP8StructS2y(%struct.StructS* %S, %struct.StructS2* %S2, i64 %count) #0 {
entry:
; Access to &(S->f32) and &(S2->f32).
; CHECK: Function
; CHECK: NoAlias: store i32 4, i32* %f321, align 4, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%S.addr = alloca %struct.StructS*, align 8
%S2.addr = alloca %struct.StructS2*, align 8
%count.addr = alloca i64, align 8
store %struct.StructS* %S, %struct.StructS** %S.addr, align 8, !tbaa !0
store %struct.StructS2* %S2, %struct.StructS2** %S2.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructS* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !17
%1 = load %struct.StructS2** %S2.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructS2* %1, i32 0, i32 1
store i32 4, i32* %f321, align 4, !tbaa !20
%2 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f322 = getelementptr inbounds %struct.StructS* %2, i32 0, i32 1
%3 = load i32* %f322, align 4, !tbaa !17
ret i32 %3
}
define i32 @_Z3g10P7StructSP8StructS2y(%struct.StructS* %S, %struct.StructS2* %S2, i64 %count) #0 {
entry:
; Access to &(S->f32) and &(S2->f16).
; CHECK: Function
; CHECK: NoAlias: store i16 4, i16* %f16, align 2, !tbaa !10 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i16 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%S.addr = alloca %struct.StructS*, align 8
%S2.addr = alloca %struct.StructS2*, align 8
%count.addr = alloca i64, align 8
store %struct.StructS* %S, %struct.StructS** %S.addr, align 8, !tbaa !0
store %struct.StructS2* %S2, %struct.StructS2** %S2.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f32 = getelementptr inbounds %struct.StructS* %0, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !17
%1 = load %struct.StructS2** %S2.addr, align 8, !tbaa !0
%f16 = getelementptr inbounds %struct.StructS2* %1, i32 0, i32 0
store i16 4, i16* %f16, align 2, !tbaa !22
%2 = load %struct.StructS** %S.addr, align 8, !tbaa !0
%f321 = getelementptr inbounds %struct.StructS* %2, i32 0, i32 1
%3 = load i32* %f321, align 4, !tbaa !17
ret i32 %3
}
define i32 @_Z3g11P7StructCP7StructDy(%struct.StructC* %C, %struct.StructD* %D, i64 %count) #0 {
entry:
; Access to &(C->b.a.f32) and &(D->b.a.f32).
; CHECK: Function
; CHECK: NoAlias: store i32 4, i32* %f323, align 4, !tbaa !12 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; Remove a load and propogate the value from store.
; OPT: ret i32 1
%C.addr = alloca %struct.StructC*, align 8
%D.addr = alloca %struct.StructD*, align 8
%count.addr = alloca i64, align 8
store %struct.StructC* %C, %struct.StructC** %C.addr, align 8, !tbaa !0
store %struct.StructD* %D, %struct.StructD** %D.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructC** %C.addr, align 8, !tbaa !0
%b = getelementptr inbounds %struct.StructC* %0, i32 0, i32 1
%a = getelementptr inbounds %struct.StructB* %b, i32 0, i32 1
%f32 = getelementptr inbounds %struct.StructA* %a, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !23
%1 = load %struct.StructD** %D.addr, align 8, !tbaa !0
%b1 = getelementptr inbounds %struct.StructD* %1, i32 0, i32 1
%a2 = getelementptr inbounds %struct.StructB* %b1, i32 0, i32 1
%f323 = getelementptr inbounds %struct.StructA* %a2, i32 0, i32 1
store i32 4, i32* %f323, align 4, !tbaa !25
%2 = load %struct.StructC** %C.addr, align 8, !tbaa !0
%b4 = getelementptr inbounds %struct.StructC* %2, i32 0, i32 1
%a5 = getelementptr inbounds %struct.StructB* %b4, i32 0, i32 1
%f326 = getelementptr inbounds %struct.StructA* %a5, i32 0, i32 1
%3 = load i32* %f326, align 4, !tbaa !23
ret i32 %3
}
define i32 @_Z3g12P7StructCP7StructDy(%struct.StructC* %C, %struct.StructD* %D, i64 %count) #0 {
entry:
; Access to &(b1->a.f32) and &(b2->a.f32).
; CHECK: Function
; CHECK: MayAlias: store i32 4, i32* %f325, align 4, !tbaa !6 <-> store i32 1, i32* %f32, align 4, !tbaa !6
; OPT: define
; OPT: store i32 1
; OPT: store i32 4
; OPT: %[[RET:.*]] = load i32*
; OPT: ret i32 %[[RET]]
%C.addr = alloca %struct.StructC*, align 8
%D.addr = alloca %struct.StructD*, align 8
%count.addr = alloca i64, align 8
%b1 = alloca %struct.StructB*, align 8
%b2 = alloca %struct.StructB*, align 8
store %struct.StructC* %C, %struct.StructC** %C.addr, align 8, !tbaa !0
store %struct.StructD* %D, %struct.StructD** %D.addr, align 8, !tbaa !0
store i64 %count, i64* %count.addr, align 8, !tbaa !4
%0 = load %struct.StructC** %C.addr, align 8, !tbaa !0
%b = getelementptr inbounds %struct.StructC* %0, i32 0, i32 1
store %struct.StructB* %b, %struct.StructB** %b1, align 8, !tbaa !0
%1 = load %struct.StructD** %D.addr, align 8, !tbaa !0
%b3 = getelementptr inbounds %struct.StructD* %1, i32 0, i32 1
store %struct.StructB* %b3, %struct.StructB** %b2, align 8, !tbaa !0
%2 = load %struct.StructB** %b1, align 8, !tbaa !0
%a = getelementptr inbounds %struct.StructB* %2, i32 0, i32 1
%f32 = getelementptr inbounds %struct.StructA* %a, i32 0, i32 1
store i32 1, i32* %f32, align 4, !tbaa !12
%3 = load %struct.StructB** %b2, align 8, !tbaa !0
%a4 = getelementptr inbounds %struct.StructB* %3, i32 0, i32 1
%f325 = getelementptr inbounds %struct.StructA* %a4, i32 0, i32 1
store i32 4, i32* %f325, align 4, !tbaa !12
%4 = load %struct.StructB** %b1, align 8, !tbaa !0
%a6 = getelementptr inbounds %struct.StructB* %4, i32 0, i32 1
%f327 = getelementptr inbounds %struct.StructA* %a6, i32 0, i32 1
%5 = load i32* %f327, align 4, !tbaa !12
ret i32 %5
}
attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
!0 = metadata !{metadata !1, metadata !1, i64 0}
!1 = metadata !{metadata !"any pointer", metadata !2}
!2 = metadata !{metadata !"omnipotent char", metadata !3}
!3 = metadata !{metadata !"Simple C/C++ TBAA"}
!4 = metadata !{metadata !5, metadata !5, i64 0}
!5 = metadata !{metadata !"long long", metadata !2}
!6 = metadata !{metadata !7, metadata !7, i64 0}
!7 = metadata !{metadata !"int", metadata !2}
!8 = metadata !{metadata !9, metadata !7, i64 4}
!9 = metadata !{metadata !"_ZTS7StructA", metadata !10, i64 0, metadata !7, i64 4, metadata !10, i64 8, metadata !7, i64 12}
!10 = metadata !{metadata !"short", metadata !2}
!11 = metadata !{metadata !9, metadata !10, i64 0}
!12 = metadata !{metadata !13, metadata !7, i64 8}
!13 = metadata !{metadata !"_ZTS7StructB", metadata !10, i64 0, metadata !9, i64 4, metadata !7, i64 20}
!14 = metadata !{metadata !13, metadata !10, i64 4}
!15 = metadata !{metadata !13, metadata !7, i64 20}
!16 = metadata !{metadata !13, metadata !7, i64 16}
!17 = metadata !{metadata !18, metadata !7, i64 4}
!18 = metadata !{metadata !"_ZTS7StructS", metadata !10, i64 0, metadata !7, i64 4}
!19 = metadata !{metadata !18, metadata !10, i64 0}
!20 = metadata !{metadata !21, metadata !7, i64 4}
!21 = metadata !{metadata !"_ZTS8StructS2", metadata !10, i64 0, metadata !7, i64 4}
!22 = metadata !{metadata !21, metadata !10, i64 0}
!23 = metadata !{metadata !24, metadata !7, i64 12}
!24 = metadata !{metadata !"_ZTS7StructC", metadata !10, i64 0, metadata !13, i64 4, metadata !7, i64 28}
!25 = metadata !{metadata !26, metadata !7, i64 12}
!26 = metadata !{metadata !"_ZTS7StructD", metadata !10, i64 0, metadata !13, i64 4, metadata !7, i64 28, metadata !2, i64 32}
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