re PR debug/43540 (ICE: vector VEC(dw_cfi_ref,heap) grow domain error, in…

re PR debug/43540 (ICE: vector VEC(dw_cfi_ref,heap) grow domain error, in output_cfis at dwarf2out.c:3346 or OOM-killed)

	PR debug/43540
	* dwarf2out.c (reg_save): For DW_CFA_expression put regnum
	into first operand and location into second.
	(dw_cfi_oprnd1_desc): Return dw_cfi_oprnd_reg_num instead of
	dw_cfi_oprnd_loc for DW_CFA_expression.
	(dw_cfi_oprnd2_desc): Return dw_cfi_oprnd_loc for DW_CFA_expression.
	(output_cfa_loc, output_cfa_loc_raw): For DW_CFA_expression
	assume first argument is regnum and second argument is location.

From-SVN: r157762

gcc/ChangeLog

+2010-03-26  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/43540
+	* dwarf2out.c (reg_save): For DW_CFA_expression put regnum
+	into first operand and location into second.
+	(dw_cfi_oprnd1_desc): Return dw_cfi_oprnd_reg_num instead of
+	dw_cfi_oprnd_loc for DW_CFA_expression.
+	(dw_cfi_oprnd2_desc): Return dw_cfi_oprnd_loc for DW_CFA_expression.
+	(output_cfa_loc, output_cfa_loc_raw): For DW_CFA_expression
+	assume first argument is regnum and second argument is location.
+
 2010-03-26  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/42113

gcc/dwarf2out.c

@@ -1115,8 +1115,8 @@ reg_save (const char *label, unsigned int reg, unsigned int sreg, HOST_WIDE_INT
       && sreg == INVALID_REGNUM)
     {
       cfi->dw_cfi_opc = DW_CFA_expression;
-      cfi->dw_cfi_oprnd2.dw_cfi_reg_num = reg;
-      cfi->dw_cfi_oprnd1.dw_cfi_loc
+      cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg;
+      cfi->dw_cfi_oprnd2.dw_cfi_loc
 	= build_cfa_aligned_loc (offset, fde->stack_realignment);
     }
   else if (sreg == INVALID_REGNUM)
@@ -2911,6 +2911,7 @@ dw_cfi_oprnd1_desc (enum dwarf_call_frame_info cfi)
     case DW_CFA_same_value:
     case DW_CFA_def_cfa_register:
     case DW_CFA_register:
+    case DW_CFA_expression:
       return dw_cfi_oprnd_reg_num;
 
     case DW_CFA_def_cfa_offset:
@@ -2919,7 +2920,6 @@ dw_cfi_oprnd1_desc (enum dwarf_call_frame_info cfi)
       return dw_cfi_oprnd_offset;
 
     case DW_CFA_def_cfa_expression:
-    case DW_CFA_expression:
       return dw_cfi_oprnd_loc;
 
     default:
@@ -2946,6 +2946,9 @@ dw_cfi_oprnd2_desc (enum dwarf_call_frame_info cfi)
     case DW_CFA_register:
       return dw_cfi_oprnd_reg_num;
 
+    case DW_CFA_expression:
+      return dw_cfi_oprnd_loc;
+
     default:
       return dw_cfi_oprnd_unused;
     }
@@ -5193,10 +5196,14 @@ output_cfa_loc (dw_cfi_ref cfi)
   unsigned long size;
 
   if (cfi->dw_cfi_opc == DW_CFA_expression)
-    dw2_asm_output_data (1, cfi->dw_cfi_oprnd2.dw_cfi_reg_num, NULL);
+    {
+      dw2_asm_output_data (1, cfi->dw_cfi_oprnd1.dw_cfi_reg_num, NULL);
+      loc = cfi->dw_cfi_oprnd2.dw_cfi_loc;
+    }
+  else
+    loc = cfi->dw_cfi_oprnd1.dw_cfi_loc;
 
   /* Output the size of the block.  */
-  loc = cfi->dw_cfi_oprnd1.dw_cfi_loc;
   size = size_of_locs (loc);
   dw2_asm_output_data_uleb128 (size, NULL);
 
@@ -5213,10 +5220,14 @@ output_cfa_loc_raw (dw_cfi_ref cfi)
   unsigned long size;
 
   if (cfi->dw_cfi_opc == DW_CFA_expression)
-    fprintf (asm_out_file, "0x%x,", cfi->dw_cfi_oprnd2.dw_cfi_reg_num);
+    {
+      fprintf (asm_out_file, "0x%x,", cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
+      loc = cfi->dw_cfi_oprnd2.dw_cfi_loc;
+    }
+  else
+    loc = cfi->dw_cfi_oprnd1.dw_cfi_loc;
 
   /* Output the size of the block.  */
-  loc = cfi->dw_cfi_oprnd1.dw_cfi_loc;
   size = size_of_locs (loc);
   dw2_asm_output_data_uleb128_raw (size);
   fputc (',', asm_out_file);