Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/AArch64/tailcall_misched_graph.ll

@@ -1,44 +0,0 @@
-; RUN: llc -mcpu=cyclone -debug-only=machine-scheduler < %s 2>&1 | FileCheck %s
-
-; REQUIRES: asserts
-
-target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
-target triple = "arm64-apple-ios7.0.0"
-
-define void @caller2(i8* %a0, i8* %a1, i8* %a2, i8* %a3, i8* %a4, i8* %a5, i8* %a6, i8* %a7, i8* %a8, i8* %a9) {
-entry:
-  tail call void @callee2(i8* %a1, i8* %a2, i8* %a3, i8* %a4, i8* %a5, i8* %a6, i8* %a7, i8* %a8, i8* %a9, i8* %a0)
-  ret void
-}
-
-declare void @callee2(i8*, i8*, i8*, i8*, i8*,
-                      i8*, i8*, i8*, i8*, i8*)
-
-; Make sure there is a dependence between the load and store to the same stack
-; location during a tail call. Tail calls clobber the incoming argument area and
-; therefore it is not safe to assume argument locations are invariant.
-; PR23459 has a test case that we where miscompiling because of this at the
-; time.
-
-; CHECK: Frame Objects
-; CHECK:  fi#-4: {{.*}} fixed, at location [SP+8]
-; CHECK:  fi#-3: {{.*}} fixed, at location [SP]
-; CHECK:  fi#-2: {{.*}} fixed, at location [SP+8]
-; CHECK:  fi#-1: {{.*}} fixed, at location [SP]
-
-; CHECK:  [[VRA:%.*]]:gpr64 = LDRXui %fixed-stack.3
-; CHECK:  [[VRB:%.*]]:gpr64 = LDRXui %fixed-stack.2
-; CHECK:  STRXui %{{.*}}, %fixed-stack.0
-; CHECK:  STRXui [[VRB]], %fixed-stack.1
-
-; Make sure that there is an dependence edge between fi#-2 and fi#-4.
-; Without this edge the scheduler would be free to move the store accross the load.
-
-; CHECK: SU({{.*}}):   [[VRB]]:gpr64 = LDRXui %fixed-stack.2
-; CHECK-NOT: SU
-; CHECK:  Successors:
-; CHECK:   SU([[DEPSTOREB:.*]]): Ord  Latency=0
-; CHECK:   SU([[DEPSTOREA:.*]]): Ord  Latency=0
-
-; CHECK: SU([[DEPSTOREA]]):   STRXui %{{.*}}, %fixed-stack.0
-; CHECK: SU([[DEPSTOREB]]):   STRXui %{{.*}}, %fixed-stack.1