PR c/12553

[pf3gnuchains/gcc-fork.git] / gcc / emit-rtl.c

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index fbd7224..1f355e8 100644 (file)
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -116,6 +116,8 @@ REAL_VALUE_TYPE dconstm1;
 REAL_VALUE_TYPE dconstm2;
 REAL_VALUE_TYPE dconsthalf;
 REAL_VALUE_TYPE dconstthird;
+REAL_VALUE_TYPE dconstpi;
+REAL_VALUE_TYPE dconste;
 
 /* All references to the following fixed hard registers go through
    these unique rtl objects.  On machines where the frame-pointer and
@@ -2627,8 +2629,7 @@ copy_most_rtx (rtx orig, rtx may_share)
          break;
 
        case '0':
-         /* Copy this through the wide int field; that's safest.  */
-         X0WINT (copy, i) = X0WINT (orig, i);
+         X0ANY (copy, i) = X0ANY (orig, i);
          break;
 
        default:
@@ -2715,9 +2716,7 @@ copy_rtx_if_shared (rtx orig)
       rtx copy;
 
       copy = rtx_alloc (code);
-      memcpy (copy, x,
-            (sizeof (*copy) - sizeof (copy->fld)
-             + sizeof (copy->fld[0]) * GET_RTX_LENGTH (code)));
+      memcpy (copy, x, RTX_SIZE (code));
       x = copy;
       copied = 1;
     }
@@ -5108,7 +5107,7 @@ copy_insn_1 (rtx orig)
      all fields need copying, and then clear the fields that should
      not be copied.  That is the sensible default behavior, and forces
      us to explicitly document why we are *not* copying a flag.  */
-  memcpy (copy, orig, sizeof (struct rtx_def) - sizeof (rtunion));
+  memcpy (copy, orig, RTX_HDR_SIZE);
 
   /* We do not copy the USED flag, which is used as a mark bit during
      walks over the RTL.  */
@@ -5126,7 +5125,7 @@ copy_insn_1 (rtx orig)
 
   for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
     {
-      copy->fld[i] = orig->fld[i];
+      copy->u.fld[i] = orig->u.fld[i];
       switch (*format_ptr++)
        {
        case 'e':
@@ -5427,6 +5426,13 @@ init_emit_once (int line_numbers)
 
   real_arithmetic (&dconstthird, RDIV_EXPR, &dconst1, &dconst3);
 
+  /* Initialize mathematical constants for constant folding builtins.
+     These constants need to be given to at least 160 bits precision.  */
+  real_from_string (&dconstpi,
+    "3.1415926535897932384626433832795028841971693993751058209749445923078");
+  real_from_string (&dconste,
+    "2.7182818284590452353602874713526624977572470936999595749669676277241");
+
   for (i = 0; i < (int) ARRAY_SIZE (const_tiny_rtx); i++)
     {
       REAL_VALUE_TYPE *r =