mjit_compile.c: drop catch table handling

The loop for `vm_exce_handle_exception` doesn't trigger `mjit_exec`, so
I don't think this code is no longer needed.

This was needed in development of original version of this JIT, but it
seems not needed from the beginning (r62189) at Ruby repository.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63520 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 6 deletions

diff --git a/mjit_compile.c b/mjit_compile.c
index 4f87550e78..5eafd72329 100644
--- a/mjit_compile.c
+++ b/mjit_compile.c
@@ -214,7 +214,8 @@ mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *func
     fprintf(f, "    static const VALUE *const original_body_iseq = (VALUE *)0x%"PRIxVALUE";\n",
             (VALUE)body->iseq_encoded);
 
-    /* Simulate `opt_pc` in setup_parameters_complex */
+    /* Simulate `opt_pc` in setup_parameters_complex. Other PCs which may be passed by catch tables
+       are not considered since vm_exec doesn't call mjit_exec for catch tables. */
     if (body->param.flags.has_opt) {
         int i;
         fprintf(f, "\n");
@@ -227,11 +228,6 @@ mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *func
         fprintf(f, "    }\n");
     }
 
-    /* ISeq might be used for catch table too. For that usage, this code cancels JIT execution. */
-    fprintf(f, "    if (reg_cfp->pc != original_body_iseq) {\n");
-    fprintf(f, "        return Qundef;\n");
-    fprintf(f, "    }\n");
-
     compile_insns(f, body, 0, 0, &status);
     compile_cancel_handler(f, body, &status);
     fprintf(f, "\n} /* end of %s */\n", funcname);