* Makefile.in (emit-rtl.o): Depend on HASHTAB_H.

	* alias.c (reg_known_value): Add comments.
	(init_alias_analysis): Likewise.
	* cse.c (exp_equiv_p): CONST_INTs are equal iff they have the same
	address.
	(cse_basic_block): Fix typo in comment.
	* emit-rtl.c: Include hashtab.h.
	(const_int_htab): New variable.
	(const_int_htab_hash): New function.
	(const_int_htab_eq): Likewise.
	(rtx_htab_mark_1): Likewise.
	(rtx_htab_mark): Likewise.
	(gen_rtx_CONST_INT): Cache all CONST_INTs.
	(unshare_all_rtx): Fix formatting.
	(init_emit_once): Initialize const_int_htab.
	* rtl.c (rtx_equal_p): CONST_INTs are equal iff they have the same
	address.
	* rtl.texi: Document the fact that all CONST_INTs with the same
	value are shared.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32844 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 4 deletions

diff --git a/gcc/cse.c b/gcc/cse.c
index 03772b0196b..c936a15db16 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -2367,10 +2367,8 @@ exp_equiv_p (x, y, validate, equal_values)
     {
     case PC:
     case CC0:
-      return x == y;
-
     case CONST_INT:
-      return INTVAL (x) == INTVAL (y);
+      return x == y;
 
     case LABEL_REF:
       return XEXP (x, 0) == XEXP (y, 0);
@@ -6898,7 +6896,7 @@ cse_basic_block (from, to, next_branch, around_loop)
 
       /* If we have processed 1,000 insns, flush the hash table to
 	 avoid extreme quadratic behavior.  We must not include NOTEs
-	 in the count since there may be more or them when generating
+	 in the count since there may be more of them when generating
 	 debugging information.  If we clear the table at different
 	 times, code generated with -g -O might be different than code
 	 generated with -O but not -g.