From: Todd Neal <todd@tneal.org>
Date: Fri, 24 Jul 2015 01:01:40 +0000 (-0500)
Subject: [dev.ssa] cmd/compile: implement LEAQ2/LEAQ4/LEAQ8 opcodes
X-Git-Tag: go1.7beta1~1623^2^2~354
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=d90e0481bf0c2f5ba13ed0ae1872b223f0c5ce9c;p=gostls13.git

[dev.ssa] cmd/compile: implement LEAQ2/LEAQ4/LEAQ8 opcodes

Change-Id: I8da76b9a4c5c80e8515e69e105d6349fe3ad9281
Reviewed-on: https://go-review.googlesource.com/12611
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
---

diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index d29da9d042..0ea5aa41f1 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -1538,11 +1538,20 @@ func genValue(v *ssa.Value) {
 		p.From.Type = obj.TYPE_REG
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = r
-	case ssa.OpAMD64LEAQ1:
+	case ssa.OpAMD64LEAQ1, ssa.OpAMD64LEAQ2, ssa.OpAMD64LEAQ4, ssa.OpAMD64LEAQ8:
 		p := Prog(x86.ALEAQ)
 		p.From.Type = obj.TYPE_MEM
 		p.From.Reg = regnum(v.Args[0])
-		p.From.Scale = 1
+		switch v.Op {
+		case ssa.OpAMD64LEAQ1:
+			p.From.Scale = 1
+		case ssa.OpAMD64LEAQ2:
+			p.From.Scale = 2
+		case ssa.OpAMD64LEAQ4:
+			p.From.Scale = 4
+		case ssa.OpAMD64LEAQ8:
+			p.From.Scale = 8
+		}
 		p.From.Index = regnum(v.Args[1])
 		addAux(&p.From, v)
 		p.To.Type = obj.TYPE_REG