Change the order of arguments of the (One|Two)ByteSeqStringSetChar intrinsic.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 7c055436fe8773cdbd16eb702ea7fa403cca300d..519845e3169c2a88c798bf849898dcc4a58166b5 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -3436,9 +3436,9 @@ void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) {
   Register index = a1;
   Register value = a2;
 
-  VisitForStackValue(args->at(1));  // index
-  VisitForStackValue(args->at(2));  // value
-  VisitForAccumulatorValue(args->at(0));  // string
+  VisitForStackValue(args->at(0));        // index
+  VisitForStackValue(args->at(1));        // value
+  VisitForAccumulatorValue(args->at(2));  // string
   __ Pop(index, value);
 
   if (FLAG_debug_code) {
@@ -3473,9 +3473,9 @@ void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) {
   Register index = a1;
   Register value = a2;
 
-  VisitForStackValue(args->at(1));  // index
-  VisitForStackValue(args->at(2));  // value
-  VisitForAccumulatorValue(args->at(0));  // string
+  VisitForStackValue(args->at(0));        // index
+  VisitForStackValue(args->at(1));        // value
+  VisitForAccumulatorValue(args->at(2));  // string
   __ Pop(index, value);
 
   if (FLAG_debug_code) {