From: Jim Wilson <wilson@gcc.gnu.org>
Date: Wed, 25 Jun 1997 02:26:15 +0000 (-0700)
Subject: (LIMIT_RELOAD_CLASS): Define.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6c13d91005127b6c1d09a7cdfa471bca08faafb9;p=gcc.git

(LIMIT_RELOAD_CLASS): Define.

From-SVN: r14301
---

diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index 07ce8724209..c5849adcb2c 100644
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -778,6 +778,16 @@ extern enum reg_class regno_reg_class[];
       ? FP_REGS : NO_REGS)			\
    : (CLASS))
 
+/* Force QImode output reloads from subregs to be allocated to data regs,
+   since QImode stores from address regs are not supported.  We make the
+   assumption that if the class is not ADDR_REGS, then it must be a superset
+   of DATA_REGS.  */
+
+#define LIMIT_RELOAD_CLASS(MODE, CLASS) \
+  (((MODE) == QImode && (CLASS) != ADDR_REGS)	\
+   ? DATA_REGS					\
+   : (CLASS))
+
 /* Return the maximum number of consecutive registers
    needed to represent mode MODE in a register of class CLASS.  */
 /* On the 68000, this is the size of MODE in words,