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8g: out of register bug
Fixes #806. R=ken2 CC=golang-dev https://golang.org/cl/1281042
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@ -10,6 +10,8 @@
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void
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mgen(Node *n, Node *n1, Node *rg)
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{
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Node n2;
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n1->op = OEMPTY;
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if(n->addable) {
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@ -18,11 +20,13 @@ mgen(Node *n, Node *n1, Node *rg)
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reg[n->val.u.reg]++;
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return;
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}
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if(n->type->width > widthptr && !isfloat[n->type->etype])
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tempname(n1, n->type);
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else
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regalloc(n1, n->type, rg);
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tempname(n1, n->type);
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cgen(n, n1);
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if(n->type->width <= widthptr || isfloat[n->type->etype]) {
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n2 = *n1;
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regalloc(n1, n->type, rg);
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gmove(&n2, n1);
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}
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}
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void
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19
test/fixedbugs/bug283.go
Normal file
19
test/fixedbugs/bug283.go
Normal file
@ -0,0 +1,19 @@
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// $G $D/$F.go || echo BUG: should compile
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// http://code.google.com/p/go/issues/detail?id=806
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// triggered out of registers on 8g
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package main
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type Point struct {
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x int
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y int
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}
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func dist(p0, p1 Point) float64 {
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return float64((p0.x-p1.x)*(p0.x-p1.x) + (p0.y-p1.y)*(p0.y-p1.y))
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}
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