Changeset 677

Timestamp:

Sep 9, 2003, 8:40:31 PM (22 years ago)

Author:

zap

Message:

.

Location:

trunk/src/gcc/gcc

Files:

• config/i386/emx.c (modified) (1 diff, 1 prop)
• config/i386/i386.c (modified) (4 diffs, 1 prop)
• reg-stack.c (modified) (5 diffs, 1 prop)
• rtl.h (modified) (1 diff, 1 prop)

trunk/src/gcc/gcc/config/i386/emx.c

@@ -350 +350 @@
         *no_add_attrs = true;
         break;
-
 
       /* Types!

trunk/src/gcc/gcc/config/i386/i386.c

@@ -2430 +2430 @@
                   cum->ec_slots--;
                 }
-#ifdef NOT_WORKING_YET
-              else if (TREE_CODE (type) == REAL_TYPE)
+              else if (FLOAT_MODE_P (mode))
                 {
                   /* Fixed-point parameters are passed in FPU registers */
@@ -2438 +2437 @@
                       cum->fpu_nregs--;
                       cum->fpu_regno++;
-                      regstack_first_undef_reg = FIRST_FLOAT_REG + cum->fpu_regno;
                       /* Args passed in FPU stack takes one eyecatcher slot */
                       cum->ec_slots--;
@@ -2452 +2450 @@
                     return;
                 }
-#endif
               else
                 {
@@ -2544 +2541 @@
         break;
 
-#if defined TARGET_OPTLINK_DECL_ATTRIBUTES && defined NOT_WORKING_YET
+#if defined TARGET_OPTLINK_DECL_ATTRIBUTES
         case QFmode:
         case HFmode:

trunk/src/gcc/gcc/reg-stack.c

@@ -232 +232 @@
 /* Used to initialize uninitialized registers.  */
 static rtx nan;
-
-/* The first undefined stack register at the beginning of this function.
-   This variable is set from machine-dependent code when placing certain
-   function arguments in stack registers at function entry, in this case
-   the variable is set to first stack register that has undefined contents
-   at the beginning of function. */
-int regstack_first_undef_reg = FIRST_STACK_REG;
 
 /* Forward declarations */
@@ -2412 +2405 @@
   int inserted = 0, i;
   edge e;
+
+
 
   for (i = n_basic_blocks - 1; i >= 0; --i)
@@ -2432 +2427 @@
     }
 
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   /* Load something into each stack register live at function entry. 
      Such live registers can be caused by uninitialized variables or
@@ -2446 +2451 @@
       block_info bi = BLOCK_INFO (block);
       int reg, top = -1;
-
-      for (reg = LAST_STACK_REG; reg >= regstack_first_undef_reg; --reg)
-        if (TEST_HARD_REG_BIT (bi->stack_in.reg_set, reg))
+      int dead_arguments = 0;
+
+      /* Put the incoming arguments to the stack.  */
+      for (i = LAST_STACK_REG; i >= FIRST_STACK_REG; i--)
+        if (incoming_arg [i - FIRST_STACK_REG])
+          bi->stack_in.reg[++top] = i;
+
+      for (reg = LAST_STACK_REG; reg >= FIRST_STACK_REG; --reg)
+        if (TEST_HARD_REG_BIT (bi->stack_in.reg_set, reg)
+            && !incoming_arg [reg - FIRST_STACK_REG])
           {
             rtx init;
@@ -2454 +2466 @@
             bi->stack_in.reg[++top] = reg;
 
-            init = gen_rtx_SET (VOIDmode,
-                                FP_MODE_REG (FIRST_STACK_REG, SFmode),
-                                nan);
-            insert_insn_on_edge (init, e);
-            inserted = 1;
+    init = gen_rtx_SET (VOIDmode,
+FP_MODE_REG (FIRST_STACK_REG, SFmode),
+nan);
+    insert_insn_on_edge (init, e);
+    inserted = 1;
           }
 
-      /* All registers that are valid on function entry should be
-         marked as such. ??? Possibly we should do it in flow.c ??? */
-      for (reg = regstack_first_undef_reg - 1; reg >= FIRST_STACK_REG; --reg)
-        {
-          bi->stack_in.reg[++top] = reg;
-        }
-
-      /* At the start of next block we cannot assume anything about
-         stack register contents.  */
-      regstack_first_undef_reg = FIRST_STACK_REG;
       bi->stack_in.top = top;
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     }
 

trunk/src/gcc/gcc/rtl.h

@@ -2007 +2007 @@
 /* In reg-stack.c */
 #ifdef BUFSIZ
-extern int regstack_first_undef_reg;
 extern void reg_to_stack                PARAMS ((rtx, FILE *));
 #endif