From: Roger Sayle <roger@eyesopen.com>
Date: Sun, 20 Jun 2004 15:10:34 +0000 (+0000)
Subject: i386.c (pentium4_cost): Increase "lea" cost from 1 to 3.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e0c003921ff62fde521a14436bbeac899181a7b3;p=gcc.git

i386.c (pentium4_cost): Increase "lea" cost from 1 to 3.


	* config/i386/i386.c (pentium4_cost): Increase "lea" cost from 1 to 3.
	(ix86_rtx_costs) <ASHIFT, PLUS>: Consider ix86_cost->lea even when
	TARGET_DECOMPOSE_LEA.

From-SVN: r83413
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b6e81ff99e8..e1bda733447 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2004-06-20  Roger Sayle  <roger@eyesopen.com>
+
+	* config/i386/i386.c (pentium4_cost): Increase "lea" cost from 1 to 3.
+	(ix86_rtx_costs) <ASHIFT, PLUS>: Consider ix86_cost->lea even when
+	TARGET_DECOMPOSE_LEA.
+
 2004-06-20  Richard Henderson  <rth@redhat.com>
 
 	* c-common.h (add_decl_stmt): Move to cp-tree.h.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 1f0cfc85d9d..83dcc9e0ee7 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -417,7 +417,7 @@ struct processor_costs k8_cost = {
 static const
 struct processor_costs pentium4_cost = {
   1,					/* cost of an add instruction */
-  1,					/* cost of a lea instruction */
+  3,					/* cost of a lea instruction */
   4,					/* variable shift costs */
   4,					/* constant shift costs */
   {15, 15, 15, 15, 15},			/* cost of starting a multiply */
@@ -14904,7 +14904,6 @@ ix86_rtx_costs (rtx x, int code, int outer_code, int *total)
 	      return false;
 	    }
 	  if ((value == 2 || value == 3)
-	      && !TARGET_DECOMPOSE_LEA
 	      && ix86_cost->lea <= ix86_cost->shift_const)
 	    {
 	      *total = COSTS_N_INSNS (ix86_cost->lea);
@@ -15007,8 +15006,7 @@ ix86_rtx_costs (rtx x, int code, int outer_code, int *total)
     case PLUS:
       if (FLOAT_MODE_P (mode))
 	*total = COSTS_N_INSNS (ix86_cost->fadd);
-      else if (!TARGET_DECOMPOSE_LEA
-	       && GET_MODE_CLASS (mode) == MODE_INT
+      else if (GET_MODE_CLASS (mode) == MODE_INT
 	       && GET_MODE_BITSIZE (mode) <= GET_MODE_BITSIZE (Pmode))
 	{
 	  if (GET_CODE (XEXP (x, 0)) == PLUS