[llvm] [AArch64] Implement INIT/ADJUST_TRAMPOLINE (PR #70267)

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``````````bash
git-clang-format --diff 9237ce46138c311849e7de19a9a3ea930f1dbd6d 9e7230fe8a4bbfacbd555720cc47478cf0b343f3 -- compiler-rt/lib/builtins/trampoline_setup.c llvm/lib/Target/AArch64/AArch64ISelLowering.cpp llvm/lib/Target/AArch64/AArch64ISelLowering.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 58063dd2c..523e28835 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -5947,16 +5947,17 @@ static SDValue LowerFLDEXP(SDValue Op, SelectionDAG &DAG) {
 }
 
 SDValue AArch64TargetLowering::LowerADJUST_TRAMPOLINE(SDValue Op,
-                                                  SelectionDAG &DAG) const {
+                                                      SelectionDAG &DAG) const {
   // Note: x18 cannot be used for the Nest parameter on Windows and macOS.
   if (Subtarget->isTargetDarwin() || Subtarget->isTargetWindows())
-    report_fatal_error("ADJUST_TRAMPOLINE operation is only supported on Linux.");
+    report_fatal_error(
+        "ADJUST_TRAMPOLINE operation is only supported on Linux.");
 
   return Op.getOperand(0);
 }
 
 SDValue AArch64TargetLowering::LowerINIT_TRAMPOLINE(SDValue Op,
-                                                SelectionDAG &DAG) const {
+                                                    SelectionDAG &DAG) const {
 
   // Note: x18 cannot be used for the Nest parameter on Windows and macOS.
   if (Subtarget->isTargetDarwin() || Subtarget->isTargetWindows())
@@ -5975,12 +5976,15 @@ SDValue AArch64TargetLowering::LowerINIT_TRAMPOLINE(SDValue Op,
   TargetLowering::ArgListEntry Entry;
 
   Entry.Ty = IntPtrTy;
-  Entry.Node = Trmp; Args.push_back(Entry);
+  Entry.Node = Trmp;
+  Args.push_back(Entry);
   Entry.Node = DAG.getConstant(20, dl, MVT::i64);
   Args.push_back(Entry);
 
-  Entry.Node = FPtr; Args.push_back(Entry);
-  Entry.Node = Nest; Args.push_back(Entry);
+  Entry.Node = FPtr;
+  Args.push_back(Entry);
+  Entry.Node = Nest;
+  Args.push_back(Entry);
 
   // Lower to a call to __trampoline_setup(Trmp, TrampSize, FPtr, ctx_reg)
   TargetLowering::CallLoweringInfo CLI(DAG);

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https://github.com/llvm/llvm-project/pull/70267