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Imported Upstream version 5.18.0.167

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Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions
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61
external/llvm/test/Transforms/NewGVN/volatile-nonvolatile.ll vendored
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@ -1,61 +0,0 @@
; RUN: opt -tbaa -newgvn -S < %s | FileCheck %s
%struct.t = type { i32* }
; The loaded address and the location of the address itself are not aliased,
; so the second reload is not necessary. Check that it can be eliminated.
; CHECK-LABEL: test1
; CHECK: load
; CHECK-NOT: load
define void @test1(%struct.t* nocapture readonly %p, i32 %v) #0 {
entry:
%m = getelementptr inbounds %struct.t, %struct.t* %p, i32 0, i32 0
%0 = load i32*, i32** %m, align 4, !tbaa !1
store volatile i32 %v, i32* %0, align 4, !tbaa !6
%1 = load i32*, i32** %m, align 4, !tbaa !1
store volatile i32 %v, i32* %1, align 4, !tbaa !6
ret void
}
; The store via the loaded address may overwrite the address itself.
; Make sure that both loads remain.
; CHECK-LABEL: test2
; CHECK: load
; CHECK: store
; CHECK: load
define void @test2(%struct.t* nocapture readonly %p, i32 %v) #0 {
entry:
%m = getelementptr inbounds %struct.t, %struct.t* %p, i32 0, i32 0
%0 = load i32*, i32** %m, align 4, !tbaa !1
store volatile i32 %v, i32* %0, align 4, !tbaa !1
%1 = load i32*, i32** %m, align 4, !tbaa !1
store volatile i32 %v, i32* %1, align 4, !tbaa !1
ret void
}
; The loads are ordered and non-monotonic. Although they are not aliased to
; the stores, make sure both are preserved.
; CHECK-LABEL: test3
; CHECK: load
; CHECK: store
; CHECK: load
define void @test3(%struct.t* nocapture readonly %p, i32 %v) #0 {
entry:
%m = getelementptr inbounds %struct.t, %struct.t* %p, i32 0, i32 0
%0 = load atomic i32*, i32** %m acquire, align 4, !tbaa !1
store volatile i32 %v, i32* %0, align 4, !tbaa !6
%1 = load atomic i32*, i32** %m acquire, align 4, !tbaa !1
store volatile i32 %v, i32* %1, align 4, !tbaa !6
ret void
}
attributes #0 = { norecurse nounwind }
!1 = !{!2, !3, i64 0}
!2 = !{!"", !3, i64 0}
!3 = !{!"any pointer", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C/C++ TBAA"}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !4, i64 0}