[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 d29da9d..0ea5aa4 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -1538,11 +1538,20 @@
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
