From: Jeffrey A Law <law@cygnus.com>
Date: Tue, 15 Sep 1998 22:01:08 +0000 (+0000)
Subject: pa.c (emit_move_sequence): Do not replace a pseudo with its equivalent memory locatio... 
X-Git-Tag: prereleases/libgcj-0.1~3031
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=54d65918774e3854206d61c82dbb39d2241eb603;p=thirdparty%2Fgcc.git

pa.c (emit_move_sequence): Do not replace a pseudo with its equivalent memory location unless...

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        * pa.c (emit_move_sequence): Do not replace a pseudo with its
        equivalent memory location unless we have been provided a scratch
        register.  Similarly do not call find_replacement unless a
        scratch register has been provided.

From-SVN: r22438
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6d40dc214368..d791d774dd80 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+Tue Sep 15 22:59:52 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* pa.c (emit_move_sequence): Do not replace a pseudo with its
+	equivalent memory location unless we have been provided a scratch
+	register.  Similarly do not call find_replacement unless a
+	scratch register has been provided.
+
 Tue Sep 15 19:23:01 1998  Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>
 
         * i386.h (PREFERRED_RELOAD_CLASS): For standard 387 constants,
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c
index a3eab2aebf5e..41642041e32f 100644
--- a/gcc/config/pa/pa.c
+++ b/gcc/config/pa/pa.c
@@ -1086,10 +1086,12 @@ emit_move_sequence (operands, mode, scratch_reg)
   register rtx operand1 = operands[1];
   register rtx tem;
 
-  if (reload_in_progress && GET_CODE (operand0) == REG
+  if (scratch_reg
+      && reload_in_progress && GET_CODE (operand0) == REG
       && REGNO (operand0) >= FIRST_PSEUDO_REGISTER)
     operand0 = reg_equiv_mem[REGNO (operand0)];
-  else if (reload_in_progress && GET_CODE (operand0) == SUBREG
+  else if (scratch_reg
+	   && reload_in_progress && GET_CODE (operand0) == SUBREG
 	   && GET_CODE (SUBREG_REG (operand0)) == REG
 	   && REGNO (SUBREG_REG (operand0)) >= FIRST_PSEUDO_REGISTER)
     {
@@ -1097,10 +1099,12 @@ emit_move_sequence (operands, mode, scratch_reg)
       operand0 = alter_subreg (operand0);
     }
 
-  if (reload_in_progress && GET_CODE (operand1) == REG
+  if (scratch_reg
+      && reload_in_progress && GET_CODE (operand1) == REG
       && REGNO (operand1) >= FIRST_PSEUDO_REGISTER)
     operand1 = reg_equiv_mem[REGNO (operand1)];
-  else if (reload_in_progress && GET_CODE (operand1) == SUBREG
+  else if (scratch_reg
+	   && reload_in_progress && GET_CODE (operand1) == SUBREG
 	   && GET_CODE (SUBREG_REG (operand1)) == REG
 	   && REGNO (SUBREG_REG (operand1)) >= FIRST_PSEUDO_REGISTER)
     {
@@ -1108,11 +1112,11 @@ emit_move_sequence (operands, mode, scratch_reg)
       operand1 = alter_subreg (operand1);
     }
 
-  if (reload_in_progress && GET_CODE (operand0) == MEM
+  if (scratch_reg && reload_in_progress && GET_CODE (operand0) == MEM
       && ((tem = find_replacement (&XEXP (operand0, 0)))
 	  != XEXP (operand0, 0)))
     operand0 = gen_rtx_MEM (GET_MODE (operand0), tem);
-  if (reload_in_progress && GET_CODE (operand1) == MEM
+  if (scratch_reg && reload_in_progress && GET_CODE (operand1) == MEM
       && ((tem = find_replacement (&XEXP (operand1, 0)))
 	  != XEXP (operand1, 0)))
     operand1 = gen_rtx_MEM (GET_MODE (operand1), tem);