From: Richard Kenner <kenner@gcc.gnu.org>
Date: Wed, 23 Feb 1994 13:13:48 +0000 (-0500)
Subject: (choose_reload_regs): If EQUIV is a SUBREG, make a new REG.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f8a9e02bc1443b3300c024454d7700f7bbe6967c;p=gcc.git

(choose_reload_regs): If EQUIV is a SUBREG, make a new REG.

From-SVN: r6612
---

diff --git a/gcc/reload1.c b/gcc/reload1.c
index 503ebe3ee91..ac75a5181e1 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -5044,9 +5044,12 @@ choose_reload_regs (insn, avoid_return_reg)
 		    regno = REGNO (equiv);
 		  else if (GET_CODE (equiv) == SUBREG)
 		    {
-		      regno = REGNO (SUBREG_REG (equiv));
-		      if (regno < FIRST_PSEUDO_REGISTER)
-			regno += SUBREG_WORD (equiv);
+		      /* This must be a SUBREG of a hard register.
+			 Make a new REG since this might be used in an
+			 address and not all machines support SUBREGs
+			 there.  */
+		      regno = REGNO (SUBREG_REG (equiv)) + SUBREG_WORD (equiv);
+		      equiv = gen_rtx (REG, reload_mode[r], regno);
 		    }
 		  else
 		    abort ();