re PR target/31850 (gcc.c-torture/compile/limits-fnargs.c is slow at compiling for spu-elf)

	PR target/31850
	* reload.c (subst_reloads): Remove checking.

From-SVN: r124810

gcc/ChangeLog

+2007-05-17  Steve Ellcey  <sje@cup.hp.com>
+
+	PR target/31850
+	* reload.c (subst_reloads): Remove checking.
+
 2007-05-17  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR rtl-optimization/31691

gcc/reload.c

@@ -88,6 +88,9 @@ a register with any other reload.  */
 
 #define REG_OK_STRICT
 
+/* We do not enable this with ENABLE_CHECKING, since it is awfully slow.  */
+#undef DEBUG_RELOAD
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
@@ -6102,8 +6105,12 @@ subst_reloads (rtx insn)
       rtx reloadreg = rld[r->what].reg_rtx;
       if (reloadreg)
 	{
-#ifdef ENABLE_CHECKING
-	  /* Internal consistency test.  Check that we don't modify
+#ifdef DEBUG_RELOAD
+	  /* This checking takes a very long time on some platforms
+	     causing the gcc.c-torture/compile/limits-fnargs.c test
+	     to time out during testing.  See PR 31850.
+
+	     Internal consistency test.  Check that we don't modify
 	     anything in the equivalence arrays.  Whenever something from
 	     those arrays needs to be reloaded, it must be unshared before
 	     being substituted into; the equivalence must not be modified.
@@ -6125,7 +6132,7 @@ subst_reloads (rtx insn)
 	      CHECK_MODF (reg_equiv_mem);
 #undef CHECK_MODF
 	    }
-#endif /* ENABLE_CHECKING */
+#endif /* DEBUG_RELOAD */
 
 	  /* If we're replacing a LABEL_REF with a register, add a
 	     REG_LABEL note to indicate to flow which label this