PPC/s390: [regexp] Remove the `stack` parameter from regexp matchers

Port 4bbfc4b7

Original Commit Message:

    The argument is no longer in use.

R=jgruber@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I06095fc237ae19ece4586d60b048785d7efa4ac3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3179268Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#77043}

src/regexp/ppc/regexp-macro-assembler-ppc.h

@@ -89,20 +89,16 @@ class V8_EXPORT_PRIVATE RegExpMacroAssemblerPPC
   static const int kFramePointer = 0;
 
   // Above the frame pointer - Stored registers and stack passed parameters.
-  // Register 25..31.
   static const int kStoredRegisters = kFramePointer;
   // Return address (stored from link register, read into pc on return).
   static const int kReturnAddress = kStoredRegisters + 7 * kSystemPointerSize;
   static const int kCallerFrame = kReturnAddress + kSystemPointerSize;
-  // Stack parameters placed by caller.
-  static const int kIsolate =
-      kCallerFrame + kStackFrameExtraParamSlot * kSystemPointerSize;
 
   // Below the frame pointer.
   // Register parameters stored by setup code.
-  static const int kDirectCall = kFramePointer - kSystemPointerSize;
-  static const int kStackHighEnd = kDirectCall - kSystemPointerSize;
-  static const int kNumOutputRegisters = kStackHighEnd - kSystemPointerSize;
+  static const int kIsolate = kFramePointer - kSystemPointerSize;
+  static const int kDirectCall = kIsolate - kSystemPointerSize;
+  static const int kNumOutputRegisters = kDirectCall - kSystemPointerSize;
   static const int kRegisterOutput = kNumOutputRegisters - kSystemPointerSize;
   static const int kInputEnd = kRegisterOutput - kSystemPointerSize;
   static const int kInputStart = kInputEnd - kSystemPointerSize;

src/regexp/s390/regexp-macro-assembler-s390.h

@@ -88,21 +88,15 @@ class V8_EXPORT_PRIVATE RegExpMacroAssemblerS390
   static const int kFramePointer = 0;
 
   // Above the frame pointer - Stored registers and stack passed parameters.
-  // Register 6-15(sp)
   static const int kStoredRegisters = kFramePointer;
   static const int kCallerFrame =
       kStoredRegisters + kCalleeRegisterSaveAreaSize;
-  // Stack parameters placed by caller.
-  static const int kCaptureArraySize = kCallerFrame;
-  static const int kStackAreaBase = kCallerFrame + kSystemPointerSize;
-  // kDirectCall again
-  static const int kIsolate = kStackAreaBase + 2 * kSystemPointerSize;
 
   // Below the frame pointer.
   // Register parameters stored by setup code.
-  static const int kDirectCall = kFramePointer - kSystemPointerSize;
-  static const int kStackHighEnd = kDirectCall - kSystemPointerSize;
-  static const int kNumOutputRegisters = kStackHighEnd - kSystemPointerSize;
+  static const int kIsolate = kFramePointer - kSystemPointerSize;
+  static const int kDirectCall = kIsolate - kSystemPointerSize;
+  static const int kNumOutputRegisters = kDirectCall - kSystemPointerSize;
   static const int kRegisterOutput = kNumOutputRegisters - kSystemPointerSize;
   static const int kInputEnd = kRegisterOutput - kSystemPointerSize;
   static const int kInputStart = kInputEnd - kSystemPointerSize;