From d8fa9d1b2aa5e2387b0e12dc6babf4efa4344c54 Mon Sep 17 00:00:00 2001
From: George Koehler <xkernigh@netscape.net>
Date: Sun, 17 Dec 2017 12:45:27 -0500
Subject: [PATCH] In coercions, try to reuse a register with the same token.

This reduces code size.
---
 mach/powerpc/ncg/table | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/mach/powerpc/ncg/table b/mach/powerpc/ncg/table
index ae1620cfd..3611a1809 100644
--- a/mach/powerpc/ncg/table
+++ b/mach/powerpc/ncg/table
@@ -723,11 +723,13 @@ COERCIONS
 			addi sp, sp, {C, 4}
 		yields %a
 
+	/* "uses REG=%1" may find and reuse a register containing the
+	 * same token.  For contrast, "uses REG gen move %1, %a" would
+	 * pick a different register before doing the move.
+         */
+
 	from INT_W
-		uses REG
-		gen
-			COMMENT("coerce INT_W->REG")
-			move %1, %a
+		uses REG=%1
 		yields %a
 
 	/*
@@ -741,17 +743,11 @@ COERCIONS
 	 */
 
 	from FLOAT_D
-		uses FREG
-		gen
-			COMMENT("coerce FLOAT_D->FREG")
-			move %1, %a
+		uses FREG=%1
 		yields %a
 
 	from FLOAT_W
-		uses FSREG
-		gen
-			COMMENT("coerce FLOAT_W->FREG")
-			move %1, %a
+		uses FSREG=%1
 		yields %a