[codegen][arm] Better load of receiver in CheckDebugHook

x64 code path is different and we can't do this optimization.

Bug: v8:9771
Change-Id: I1639e53b4397873e70895ec2919ac2769b0bbc72
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1826728Reviewed-by: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64022}

src/codegen/arm/macro-assembler-arm.cc

@@ -1617,11 +1617,10 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
   {
     // Load receiver to pass it later to DebugOnFunctionCall hook.
     if (actual.is_reg()) {
-      mov(r4, actual.reg());
+      ldr(r4, MemOperand(sp, actual.reg(), LSL, kPointerSizeLog2));
     } else {
-      mov(r4, Operand(actual.immediate()));
+      ldr(r4, MemOperand(sp, actual.immediate() << kPointerSizeLog2));
     }
-    ldr(r4, MemOperand(sp, r4, LSL, kPointerSizeLog2));
     FrameScope frame(this,
                      has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);
     if (expected.is_reg()) {

src/codegen/arm64/macro-assembler-arm64.cc

@@ -2222,10 +2222,11 @@ void MacroAssembler::CheckDebugHook(Register fun, Register new_target,
 
   {
     // Load receiver to pass it later to DebugOnFunctionCall hook.
-    Operand actual_op = actual.is_immediate() ? Operand(actual.immediate())
-                                              : Operand(actual.reg());
-    Mov(x4, actual_op);
-    Ldr(x4, MemOperand(sp, x4, LSL, kSystemPointerSizeLog2));
+    if (actual.is_reg()) {
+      Ldr(x4, MemOperand(sp, actual.reg(), LSL, kSystemPointerSizeLog2));
+    } else {
+      Ldr(x4, MemOperand(sp, actual.immediate() << kSystemPointerSizeLog2));
+    }
     FrameScope frame(this,
                      has_frame() ? StackFrame::NONE : StackFrame::INTERNAL);