Lazily initialize fast_sqrt() and pass an Isolate parameter to it

src/mips64/simulator-mips64.cc

Index: src/mips64/simulator-mips64.cc
diff --git a/src/mips64/simulator-mips64.cc b/src/mips64/simulator-mips64.cc
index ed3cf3563b66c84dd4476384df96d65c56035358..2440770b19aad0c1c4583b739dd2b81b59937426 100644
--- a/src/mips64/simulator-mips64.cc
+++ b/src/mips64/simulator-mips64.cc
@@ -2259,10 +2259,12 @@ void Simulator::DecodeTypeRegisterSRsType() {
       set_fpu_register_float(fd_reg(), -fs);
       break;
     case SQRT_S:
-      set_fpu_register_float(fd_reg(), fast_sqrt(fs));
+      lazily_initialize_fast_sqrt(isolate_);
+      set_fpu_register_float(fd_reg(), fast_sqrt(fs, isolate_));
       break;
     case RSQRT_S: {
-      float result = 1.0 / fast_sqrt(fs);
+      lazily_initialize_fast_sqrt(isolate_);
+      float result = 1.0 / fast_sqrt(fs, isolate_);
       set_fpu_register_float(fd_reg(), result);
       break;
     }
@@ -2764,10 +2766,12 @@ void Simulator::DecodeTypeRegisterDRsType() {
       set_fpu_register_double(fd_reg(), -fs);
       break;
     case SQRT_D:
-      set_fpu_register_double(fd_reg(), fast_sqrt(fs));
+      lazily_initialize_fast_sqrt(isolate_);
+      set_fpu_register_double(fd_reg(), fast_sqrt(fs, isolate_));
       break;
     case RSQRT_D: {
-      double result = 1.0 / fast_sqrt(fs);
+      lazily_initialize_fast_sqrt(isolate_);
+      double result = 1.0 / fast_sqrt(fs, isolate_);
       set_fpu_register_double(fd_reg(), result);
       break;
     }