alpha.c (summarize_insn): Handle ASM_OPERANDS.

        * alpha.c (summarize_insn): Handle ASM_OPERANDS.  Don't recurse
        for SUBREG, just fall through.

        * alpha.c (alpha_handle_trap_shadows): Init sum.defd to zero.

        * alpha.md (attr trap): Make TRAP_YES non-zero for sanity's sake.

From-SVN: r16339

gcc/ChangeLog

+Tue Nov  4 20:36:50 1997  Richard Henderson  (rth@cygnus.com)
+
+	* alpha.c (summarize_insn): Handle ASM_OPERANDS.  Don't recurse
+	for SUBREG, just fall through.
+
+	* alpha.c (alpha_handle_trap_shadows): Init sum.defd to zero.
+
+	* alpha.md (attr trap): Make TRAP_YES non-zero for sanity's sake.
+
 Tue Nov  4 18:49:42 1997  Jeffrey A Law  (law@cygnus.com)
 
 	* fixincludes: Fix "hypot" prototype in NeXT math.h.

gcc/config/alpha/alpha.c

@@ -2848,11 +2848,20 @@ summarize_insn (x, sum, set)
       summarize_insn (XEXP (x, 0), sum, 0);
       break;
 
+    case ASM_OPERANDS:
+      for (i = ASM_OPERANDS_INPUT_LENGTH (x) - 1; i >= 0; i--)
+	summarize_insn (ASM_OPERANDS_INPUT (x, i), sum, 0);
+      break;
+
     case PARALLEL:
       for (i = XVECLEN (x, 0) - 1; i >= 0; i--)
 	summarize_insn (XVECEXP (x, 0, i), sum, 0);
       break;
 
+    case SUBREG:
+      x = SUBREG_REG (x);
+      /* FALLTHRU */
+
     case REG:
       {
 	int regno = REGNO (x);
@@ -2888,10 +2897,6 @@ summarize_insn (x, sum, set)
       summarize_insn (XEXP (x, 0), sum, 0);
       break;
 
-    case SUBREG:
-      summarize_insn (SUBREG_REG (x), sum, set);
-      break;
-
     case CONST_INT:   case CONST_DOUBLE:
     case SYMBOL_REF:  case LABEL_REF:     case CONST:
       break;
@@ -3022,7 +3027,7 @@ alpha_handle_trap_shadows (insns)
 		  sum.used.i = 0;
 		  sum.used.fp = 0;
 		  sum.used.mem = 0;
-		  sum.defd = shadow.used;
+		  sum.defd = sum.used;
 
 		  switch (GET_CODE (i))
 		    {

gcc/config/alpha/alpha.md

@@ -39,7 +39,7 @@
 ;; The TRAP_TYPE attribute marks instructions that may generate traps
 ;; (which are imprecise and may need a trapb if software complention
 ;; is desired).
-(define_attr "trap" "yes,no" (const_string "no"))
+(define_attr "trap" "no,yes" (const_string "no"))
 
 ;; For the EV4 we include four function units: ABOX, which computes
 ;; the address, BBOX, used for branches, EBOX, used for integer