MIPS: Add a trap_on_abort flag.

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 5becf7c370270f03bc00de8bb71473a8be809916..14a1e2fdca778e5a970cd1e65ac4a9918256a19e 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -4477,6 +4477,11 @@ void MacroAssembler::Abort(BailoutReason reason) {
     RecordComment("Abort message: ");
     RecordComment(msg);
   }
+
+  if (FLAG_trap_on_abort) {
+    stop(msg);
+    return;
+  }
 #endif
 
   li(a0, Operand(p0));