From: Richard Kenner <kenner@gcc.gnu.org>
Date: Tue, 25 Apr 1995 21:05:37 +0000 (-0400)
Subject: (convert_move): Don't access a hard reg in an invalid mode when doing
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=34aa3599f159bba2ea3fdc9a08324402d8003b89;p=gcc.git

(convert_move): Don't access a hard reg in an invalid mode when doing
a truncation.

From-SVN: r9447
---

diff --git a/gcc/expr.c b/gcc/expr.c
index 656d8254002..c76feb01352 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1081,6 +1081,9 @@ convert_move (to, from, unsignedp)
 	    || GET_CODE (from) == REG
 	    || GET_CODE (from) == SUBREG))
 	from = force_reg (from_mode, from);
+      if (GET_CODE (from) == REG && REGNO (from) < FIRST_PSEUDO_REGISTER
+	  && ! HARD_REGNO_MODE_OK (REGNO (from), to_mode))
+	from = copy_to_reg (from);
       emit_move_insn (to, gen_lowpart (to_mode, from));
       return;
     }