From: Fariborz Jahanian <fjahanian@gcc.gnu.org>
Date: Mon, 26 Jan 2004 17:43:46 +0000 (+0000)
Subject: Do not assign long long argument to memory in prologue if loaded in register.
X-Git-Tag: releases/gcc-4.0.0~10683
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6e290f11559f1bebdb91b7ff556ef160ee241d1e;p=thirdparty%2Fgcc.git

Do not assign long long argument to memory in prologue if loaded in register.

OKed by Richard Henderson.

From-SVN: r76648
---

diff --git a/gcc/function.c b/gcc/function.c
index f4c90b5cdc34..5af0a901cde9 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -4374,6 +4374,7 @@ assign_parms (tree fndecl)
       int in_regs;
       int partial = 0;
       int pretend_bytes = 0;
+      int loaded_in_reg = 0;
 
       /* Set LAST_NAMED if this is last named arg before last
 	 anonymous args.  */
@@ -4745,6 +4746,7 @@ assign_parms (tree fndecl)
 	      emit_group_store (parmreg, entry_parm, TREE_TYPE (parm),
 				int_size_in_bytes (TREE_TYPE (parm)));
 	      SET_DECL_RTL (parm, parmreg);
+	      loaded_in_reg = 1;
 
 	      if (regno >= max_parm_reg)
 		{
@@ -4776,7 +4778,8 @@ assign_parms (tree fndecl)
 	     Handle calls that pass values in multiple non-contiguous
 	     locations.  The Irix 6 ABI has examples of this.  */
 	  if (GET_CODE (entry_parm) == REG
-	      || GET_CODE (entry_parm) == PARALLEL)
+	      || (GET_CODE (entry_parm) == PARALLEL
+		 && (!loaded_in_reg || !optimize)))
 	    {
 	      int size = int_size_in_bytes (TREE_TYPE (parm));
 	      int size_stored = CEIL_ROUND (size, UNITS_PER_WORD);