[dev.inline] cmd/compile/internal/ssa: rename various fields from Line to Pos

This is a mostly mechanical rename followed by manual fixes where necessary.

Change-Id: Ie5c670b133db978f15dc03e50dc2da0c80fc8842
Reviewed-on: https://go-review.googlesource.com/34137
Reviewed-by: David Lazar <lazard@golang.org>
diff --git a/src/cmd/compile/internal/ssa/value.go b/src/cmd/compile/internal/ssa/value.go
index 6cec9db..aeb8e8c 100644
--- a/src/cmd/compile/internal/ssa/value.go
+++ b/src/cmd/compile/internal/ssa/value.go
@@ -37,8 +37,8 @@
 	// Containing basic block
 	Block *Block
 
-	// Source line number
-	Line src.Pos
+	// Source position
+	Pos src.Pos
 
 	// Use count. Each appearance in Value.Args and Block.Control counts once.
 	Uses int32
@@ -218,7 +218,7 @@
 
 // copyInto makes a new value identical to v and adds it to the end of b.
 func (v *Value) copyInto(b *Block) *Value {
-	c := b.NewValue0(v.Line, v.Op, v.Type)
+	c := b.NewValue0(v.Pos, v.Op, v.Type)
 	c.Aux = v.Aux
 	c.AuxInt = v.AuxInt
 	c.AddArgs(v.Args...)
@@ -233,7 +233,7 @@
 func (v *Value) Logf(msg string, args ...interface{}) { v.Block.Logf(msg, args...) }
 func (v *Value) Log() bool                            { return v.Block.Log() }
 func (v *Value) Fatalf(msg string, args ...interface{}) {
-	v.Block.Func.Config.Fatalf(v.Line, msg, args...)
+	v.Block.Func.Config.Fatalf(v.Pos, msg, args...)
 }
 
 // isGenericIntConst returns whether v is a generic integer constant.