Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/X86/2010-02-19-TailCallRetAddrBug.ll

@@ -1,53 +0,0 @@
-; RUN: llc -mcpu=generic -mtriple=i386-apple-darwin -tailcallopt -enable-misched=false < %s | FileCheck %s
-; Check that lowered argumens do not overwrite the return address before it is moved.
-; Bug 6225
-;
-; If a call is a fastcc tail call and tail call optimization is enabled, the
-; caller frame is replaced by the callee frame. This can require that arguments are
-; placed on the former return address stack slot. Special care needs to be taken
-; taken that the return address is moved / or stored in a register before
-; lowering of arguments potentially overwrites the value.
-;
-; Move return address (76(%esp)) to a temporary register (%ebp)
-; CHECK: movl 76(%esp), [[REGISTER:%[a-z]+]]
-; Overwrite return addresss
-; CHECK: movl [[EBX:%[a-z]+]], 76(%esp)
-; Move return address from temporary register (%ebp) to new stack location (60(%esp))
-; CHECK: movl [[REGISTER]], 60(%esp)
-
-%tupl = type [9 x i32]
-
-declare fastcc void @l297(i32 %r10, i32 %r9, i32 %r8, i32 %r7, i32 %r6, i32 %r5, i32 %r3, i32 %r2) noreturn nounwind
-declare fastcc void @l298(i32 %r10, i32 %r9, i32 %r4) noreturn nounwind
-
-define fastcc void @l186(%tupl* %r1) noreturn nounwind {
-entry:
-  %ptr1 = getelementptr %tupl, %tupl* %r1, i32 0, i32 0
-  %r2 = load i32, i32* %ptr1
-  %ptr3 = getelementptr %tupl, %tupl* %r1, i32 0, i32 1
-  %r3 = load i32, i32* %ptr3
-  %ptr5 = getelementptr %tupl, %tupl* %r1, i32 0, i32 2
-  %r4 = load i32, i32* %ptr5
-  %ptr7 = getelementptr %tupl, %tupl* %r1, i32 0, i32 3
-  %r5 = load i32, i32* %ptr7
-  %ptr9 = getelementptr %tupl, %tupl* %r1, i32 0, i32 4
-  %r6 = load i32, i32* %ptr9
-  %ptr11 = getelementptr %tupl, %tupl* %r1, i32 0, i32 5
-  %r7 = load i32, i32* %ptr11
-  %ptr13 = getelementptr %tupl, %tupl* %r1, i32 0, i32 6
-  %r8 = load i32, i32* %ptr13
-  %ptr15 = getelementptr %tupl, %tupl* %r1, i32 0, i32 7
-  %r9 = load i32, i32* %ptr15
-  %ptr17 = getelementptr %tupl, %tupl* %r1, i32 0, i32 8
-  %r10 = load i32, i32* %ptr17
-  %cond = icmp eq i32 %r10, 3
-  br i1 %cond, label %true, label %false
-
-true:
-  tail call fastcc void @l297(i32 %r10, i32 %r9, i32 %r8, i32 %r7, i32 %r6, i32 %r5, i32 %r3, i32 %r2) noreturn nounwind
-  ret void
-
-false:
-  tail call fastcc void @l298(i32 %r10, i32 %r9, i32 %r4) noreturn nounwind
-  ret void
-}