Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Analysis/MemorySSA/multiple-backedges-hal.ll

@@ -1,73 +0,0 @@
-; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
-; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
-
-; hfinkel's case
-; [entry]
-;  |
-; .....
-; (clobbering access - b)
-;  |
-; ....  ________________________________
-;  \   /                               |
-;   (x)                                |
-;  ......                              |
-;    |                                 |
-;    |    ______________________       |
-;     \   /                    |       |
-; (starting access)            |       |
-;     ...                      |       |
-; (clobbering access - a)      |       |
-;    ...                       |       |
-;    | |                       |       |
-;    | |_______________________|       |
-;    |                                 |
-;    |_________________________________|
-;
-; More specifically, one access, with multiple clobbering accesses. One of
-; which strictly dominates the access, the other of which has a backedge
-
-; readnone so we don't have a 1:1 mapping of MemorySSA edges to Instructions.
-declare void @doThingWithoutReading() readnone
-declare i8 @getValue() readnone
-declare i1 @getBool() readnone
-
-define hidden void @testcase(i8* %Arg) {
-Entry:
-  call void @doThingWithoutReading()
-  %Val.Entry = call i8 @getValue()
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: store i8 %Val.Entry
-  store i8 %Val.Entry, i8* %Arg
-  call void @doThingWithoutReading()
-  br label %OuterLoop
-
-OuterLoop:
-; CHECK: 4 = MemoryPhi({Entry,1},{InnerLoop.Tail,3})
-; CHECK-NEXT: %Val.Outer =
-  %Val.Outer = call i8 @getValue()
-; CHECK: 2 = MemoryDef(4)
-; CHECK-NEXT: store i8 %Val.Outer
-  store i8 %Val.Outer, i8* %Arg
-  call void @doThingWithoutReading()
-  br label %InnerLoop
-
-InnerLoop:
-; CHECK: 5 = MemoryPhi({OuterLoop,2},{InnerLoop,3})
-; CHECK-NEXT: ; MemoryUse(5)
-; CHECK-NEXT: %StartingAccess = load
-  %StartingAccess = load i8, i8* %Arg, align 4
-  %Val.Inner = call i8 @getValue()
-; CHECK: 3 = MemoryDef(5)
-; CHECK-NEXT: store i8 %Val.Inner
-  store i8 %Val.Inner, i8* %Arg
-  call void @doThingWithoutReading()
-  %KeepGoing = call i1 @getBool()
-  br i1 %KeepGoing, label %InnerLoop.Tail, label %InnerLoop
-
-InnerLoop.Tail:
-  %KeepGoing.Tail = call i1 @getBool()
-  br i1 %KeepGoing.Tail, label %End, label %OuterLoop
-
-End:
-  ret void
-}