From: Richard Henderson <rth@cygnus.com>
Date: Sun, 28 May 2000 20:39:51 +0000 (-0700)
Subject: regclass.c (record_operand_costs): Protect reg_changes_size with CLASS_CANNOT_CHANGE_... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9ef07cf1d4a446b445c4e97860172f51aebc951b;p=gcc.git

regclass.c (record_operand_costs): Protect reg_changes_size with CLASS_CANNOT_CHANGE_SIZE.

        * regclass.c (record_operand_costs): Protect reg_changes_size
        with CLASS_CANNOT_CHANGE_SIZE.

From-SVN: r34238
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c4e17973b08..ba57538fbb6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2000-05-28  Richard Henderson  <rth@cygnus.com>
 
+	* regclass.c (record_operand_costs): Protect reg_changes_size
+	with CLASS_CANNOT_CHANGE_SIZE.
+
 	* loop.c (instrument_loop_bct): Set JUMP_LABEL on the new insn.
 
 2000-05-28  Richard Henderson  <rth@cygnus.com>
diff --git a/gcc/regclass.c b/gcc/regclass.c
index 6a741a64b4b..3db64a2244d 100644
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -859,9 +859,11 @@ record_operand_costs (insn, op_costs, reg_pref)
       if (GET_CODE (recog_data.operand[i]) == SUBREG)
 	{
 	  rtx inner = SUBREG_REG (recog_data.operand[i]);
+#ifdef CLASS_CANNOT_CHANGE_SIZE
 	  if (GET_MODE_SIZE (modes[i]) != GET_MODE_SIZE (GET_MODE (inner))
 	      && GET_CODE (inner) == REG)
 	    SET_REGNO_REG_SET (reg_changes_size, REGNO (inner));
+#endif
 	  recog_data.operand[i] = inner;
 	}