[regexp] Remove remainder of native RegExpExecStub

src/regexp/mips64/regexp-macro-assembler-mips64.cc

Index: src/regexp/mips64/regexp-macro-assembler-mips64.cc
diff --git a/src/regexp/mips64/regexp-macro-assembler-mips64.cc b/src/regexp/mips64/regexp-macro-assembler-mips64.cc
index e0317dec8a6d77b9e671a8a1b3918f4134e67442..8bfdd02e71284873c8106c2f1712ea0beab1c35f 100644
--- a/src/regexp/mips64/regexp-macro-assembler-mips64.cc
+++ b/src/regexp/mips64/regexp-macro-assembler-mips64.cc
@@ -17,7 +17,9 @@ namespace v8 {
 namespace internal {
 
 #ifndef V8_INTERPRETED_REGEXP
-/*
+
+/* clang-format off
+ *
  * This assembler uses the following register assignment convention
  * - t3 : Temporarily stores the index of capture start after a matching pass
  *        for a global regexp.
@@ -74,9 +76,8 @@ namespace internal {
  *
  * The N64 stack will have the following structure:
  *
- *  - fp[88]  Isolate* isolate   (address of the current isolate)               kIsolate
- *  - fp[80]  secondary link/return address used by exit frame on native call.  kSecondaryReturnAddress
-                                                                                kStackFrameHeader
+ *  - fp[80]  Isolate* isolate   (address of the current isolate)               kIsolate

[georgia.kouveli, 2017/04/19 15:57:26]

The corresponding comments for arm and arm64 are also out of date now (they also
mention the secondary return address in the frame layout description, in the
signature of "match" and also mention exit frames).

[jgruber, 2017/04/20 09:37:47]

Thanks, good point. I made a pass through the comments for all architectures and
updated all of them (+ some drive-by fixes).

+ *                                                                              kStackFrameHeader
  *  --- sp when called ---
  *  - fp[72]  ra                 Return from RegExp code (ra).                  kReturnAddress
  *  - fp[64]  s9, old-fp         Old fp, callee saved(s9).
@@ -125,6 +126,8 @@ namespace internal {
  * area is overwritten with the ra register by the RegExp code. When doing a
  * direct call from generated code, the return address is placed there by

[georgia.kouveli, 2017/04/19 15:57:26]

Another mention of the return address and exit frames.

[jgruber, 2017/04/20 09:37:47]

Removed this entire paragraph.

  * the calling code, as in a normal exit frame.
+ *
+ * clang-format on
  */
 
 #define __ ACCESS_MASM(masm_)