From: Jim Wilson <wilson@gcc.gnu.org>
Date: Tue, 12 Jul 1994 17:19:46 +0000 (-0700)
Subject: (record_dead_and_set_regs_1): Can only handle SUBREG
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=90bf80812ec1b2c3c02728af87c71f2ebf64dcc7;p=gcc.git

(record_dead_and_set_regs_1): Can only handle SUBREG
if the register is smaller or equal to BITS_PER_WORD.

From-SVN: r7749
---

diff --git a/gcc/combine.c b/gcc/combine.c
index dd78ed31826..990fa4d594f 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -9646,6 +9646,7 @@ record_dead_and_set_regs_1 (dest, setter)
       else if (GET_CODE (setter) == SET
 	       && GET_CODE (SET_DEST (setter)) == SUBREG
 	       && SUBREG_REG (SET_DEST (setter)) == dest
+	       && GET_MODE_BITSIZE (GET_MODE (dest)) <= BITS_PER_WORD
 	       && subreg_lowpart_p (SET_DEST (setter)))
 	record_value_for_reg (dest, record_dead_insn,
 			      gen_lowpart_for_combine (GET_MODE (dest),