10468 __ctype_mask[EOF] has been working by accident
10469 GCC's -faggressive-loop-optimizations is too aggressive
10470 array over-read in has_saved_fp()
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: John Levon <john.levon@joyent.com>

*** 21,30 ****
--- 21,33 ----
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
+ /*
+  * Copyright 2019 Joyent, Inc.
+  */
  
  /*
   * The Sun Studio and GCC (patched for opensolaris/illumos) compilers
   * implement a argument saving scheme on amd64 via the -Wu,save-args or
   * options.  When the option is specified, INTEGER type function arguments
*** 229,248 ****
                  if (found_push == B_FALSE) {
                          if (sz != 1)
                                  continue;
  
                          n = INSTR1(ins, i);
!                         for (j = 0; j <= NUM_FP_PUSHES; j++)
                                  if (save_fp_pushes[j] == n) {
                                          found_push = B_TRUE;
                                          break;
                                  }
                  } else {
                          if (sz != 3)
                                  continue;
                          n = INSTR3(ins, i);
!                         for (j = 0; j <= NUM_FP_MOVS; j++)
                                  if (save_fp_movs[j] == n)
                                          return (B_TRUE);
                  }
          }
  
--- 232,251 ----
                  if (found_push == B_FALSE) {
                          if (sz != 1)
                                  continue;
  
                          n = INSTR1(ins, i);
!                         for (j = 0; j < NUM_FP_PUSHES; j++)
                                  if (save_fp_pushes[j] == n) {
                                          found_push = B_TRUE;
                                          break;
                                  }
                  } else {
                          if (sz != 3)
                                  continue;
                          n = INSTR3(ins, i);
!                         for (j = 0; j < NUM_FP_MOVS; j++)
                                  if (save_fp_movs[j] == n)
                                          return (B_TRUE);
                  }
          }