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fold-const.c (int_const_binop): Don't generate non-overflowing size-types specially.

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* fold-const.c (int_const_binop): Don't generate non-overflowing
	size-types specially.
	(fold_convert_const): Likewise.

From-SVN: r86321
This commit is contained in:
Nathan Sidwell 2004-08-20 14:28:28 +00:00 committed by Nathan Sidwell
parent 3224beadb4
commit fabead0613
2 changed files with 5 additions and 17 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2004-08-20 Nathan Sidwell <nathan@codesourcery.com> 2004-08-20 Nathan Sidwell <nathan@codesourcery.com>
* fold-const.c (int_const_binop): Don't generate non-overflowing
size-types specially.
(fold_convert_const): Likewise.
* stor-layout.c (initialize_sizetypes): Set SIZETYPE earlier, * stor-layout.c (initialize_sizetypes): Set SIZETYPE earlier,
clear cache on copied sizetype. clear cache on copied sizetype.

16
gcc/fold-const.c
View File

@ -1412,15 +1412,6 @@ int_const_binop (enum tree_code code, tree arg1, tree arg2, int notrunc)
abort (); abort ();
} }
/* If this is for a sizetype, can be represented as one (signed)
HOST_WIDE_INT word, and doesn't overflow, use size_int since it caches
constants. */
if (is_sizetype
&& ((hi == 0 && (HOST_WIDE_INT) low >= 0)
|| (hi == -1 && (HOST_WIDE_INT) low < 0))
&& overflow == 0 && ! TREE_OVERFLOW (arg1) && ! TREE_OVERFLOW (arg2))
return size_int_type (low, type);
else
t = build_int_cst (TREE_TYPE (arg1), low, hi); t = build_int_cst (TREE_TYPE (arg1), low, hi);
if (notrunc) if (notrunc)
@ -1783,13 +1774,6 @@ fold_convert_const (enum tree_code code, tree type, tree arg1)
if (TYPE_PRECISION (type) > 2 * HOST_BITS_PER_WIDE_INT) if (TYPE_PRECISION (type) > 2 * HOST_BITS_PER_WIDE_INT)
return NULL_TREE; return NULL_TREE;
/* If we are trying to make a sizetype for a small integer, use
size_int to pick up cached types to reduce duplicate nodes. */
if (TREE_CODE (type) == INTEGER_TYPE && TYPE_IS_SIZETYPE (type)
&& !TREE_CONSTANT_OVERFLOW (arg1)
&& compare_tree_int (arg1, 10000) < 0)
return size_int_type (TREE_INT_CST_LOW (arg1), type);
/* Given an integer constant, make new constant with new type, /* Given an integer constant, make new constant with new type,
appropriately sign-extended or truncated. */ appropriately sign-extended or truncated. */
t = build_int_cst (type, TREE_INT_CST_LOW (arg1), t = build_int_cst (type, TREE_INT_CST_LOW (arg1),