From df1abc44128b866596170d4589580a7585f06b58 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 5 Aug 2009 03:03:07 -0700
Subject: [PATCH] X86: Let microops force folding an index into the high byte
 of a register.

---
 src/arch/x86/isa/microasm.isa | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/arch/x86/isa/microasm.isa b/src/arch/x86/isa/microasm.isa
index 0cc72bf7b..c6f5e9cdd 100644
--- a/src/arch/x86/isa/microasm.isa
+++ b/src/arch/x86/isa/microasm.isa
@@ -151,6 +151,10 @@ let {{
         assembler.symbols["r%s" % reg] = \
             regIdx("INTREG_R%s" % reg.upper())
 
+    for reg in ('ah', 'bh', 'ch', 'dh'):
+        assembler.symbols[reg] = \
+            regIdx("INTREG_FOLDED(INTREG_%s, IntFoldBit)" % reg.upper())
+
     for reg in range(16):
         assembler.symbols["cr%d" % reg] = regIdx("MISCREG_CR%d" % reg)
 
-- 
2.30.2