From 28592ee1ea1f5cdffcf85472f9de0285d928cf12 Mon Sep 17 00:00:00 2001
From: Ondřej Surý <ondrej@sury.org>
Date: Wed, 3 Aug 2011 16:54:30 +0200
Subject: Imported Upstream version 59

---
 src/cmd/6g/ggen.c | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

(limited to 'src/cmd/6g/ggen.c')

diff --git a/src/cmd/6g/ggen.c b/src/cmd/6g/ggen.c
index 5260335df..9e7fbab0d 100644
--- a/src/cmd/6g/ggen.c
+++ b/src/cmd/6g/ggen.c
@@ -18,6 +18,32 @@ defframe(Prog *ptxt)
 	ptxt->to.offset |= rnd(stksize+maxarg, widthptr);
 }
 
+// Sweep the prog list to mark any used nodes.
+void
+markautoused(Prog* p)
+{
+	for (; p; p = p->link) {
+		if (p->from.type == D_AUTO && p->from.node)
+			p->from.node->used++;
+
+		if (p->to.type == D_AUTO && p->to.node)
+			p->to.node->used++;
+	}
+}
+
+// Fixup instructions after compactframe has moved all autos around.
+void
+fixautoused(Prog* p)
+{
+	for (; p; p = p->link) {
+		if (p->from.type == D_AUTO && p->from.node)
+			p->from.offset += p->from.node->stkdelta;
+
+		if (p->to.type == D_AUTO && p->to.node)
+			p->to.offset += p->to.node->stkdelta;
+	}
+}
+
 
 /*
  * generate:
@@ -102,13 +128,13 @@ cgen_callinter(Node *n, Node *res, int proc)
 
 	nodindreg(&nodsp, types[tptr], D_SP);
 	nodo.xoffset += widthptr;
-	cgen(&nodo, &nodsp);	// 0(SP) = 8(REG) -- i.s
+	cgen(&nodo, &nodsp);	// 0(SP) = 8(REG) -- i.data
 
 	nodo.xoffset -= widthptr;
-	cgen(&nodo, &nodr);	// REG = 0(REG) -- i.m
+	cgen(&nodo, &nodr);	// REG = 0(REG) -- i.tab
 
 	nodo.xoffset = n->left->xoffset + 3*widthptr + 8;
-	cgen(&nodo, &nodr);	// REG = 32+offset(REG) -- i.m->fun[f]
+	cgen(&nodo, &nodr);	// REG = 32+offset(REG) -- i.tab->fun[f]
 
 	// BOTCH nodr.type = fntype;
 	nodr.type = n->left->type;
-- 
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