re PR rtl-optimization/37435 (ICE with volatiles)

gcc/

2008-09-09  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/37435
	* caller-save.c (insert_restore, insert_save): Check the mode by
	reg_save_code.

gcc/testsuite/

2008-09-09  H.J. Lu  <hongjiu.lu@intel.com>

	PR rtl-optimization/37435
	* gcc.dg/dfp/pr37435.c: New.

From-SVN: r140184

gcc/ChangeLog

+2008-09-09  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR rtl-optimization/37435
+	* caller-save.c (insert_restore, insert_save): Check the mode by
+	reg_save_code.
+
 2008-09-09  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR other/37265

gcc/caller-save.c

@@ -1067,7 +1067,10 @@ insert_restore (struct insn_chain *chain, int before_p, int regno,
   mem = regno_save_mem [regno][numregs];
   if (save_mode [regno] != VOIDmode
       && save_mode [regno] != GET_MODE (mem)
-      && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
+      && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]]
+      /* Check that insn to restore REGNO in save_mode[regno] is
+	 correct.  */
+      && reg_save_code (regno, save_mode[regno]) >= 0)
     mem = adjust_address (mem, save_mode[regno], 0);
   else
     mem = copy_rtx (mem);
@@ -1145,7 +1148,10 @@ insert_save (struct insn_chain *chain, int before_p, int regno,
   mem = regno_save_mem [regno][numregs];
   if (save_mode [regno] != VOIDmode
       && save_mode [regno] != GET_MODE (mem)
-      && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
+      && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]]
+      /* Check that insn to save REGNO in save_mode[regno] is
+	 correct.  */
+      && reg_save_code (regno, save_mode[regno]) >= 0)
     mem = adjust_address (mem, save_mode[regno], 0);
   else
     mem = copy_rtx (mem);

gcc/testsuite/ChangeLog

+2008-09-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR rtl-optimization/37435
+	* gcc.dg/dfp/pr37435.c: New.
+
 2008-09-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/37417

gcc/testsuite/gcc.dg/dfp/pr37435.c

+/* { dg-do compile { target fpic } } */
+/* { dg-options "-std=gnu99 -O2 -fPIC" } */
+
+volatile _Decimal32 d;
+volatile int i;
+
+void foo()
+{
+  d += i;
+  d += i;
+}