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36df358a30
Revision 63f7abcae015 introduced a bug caused by code assuming registers started at X5, not X0. Fixes #4138. R=rsc CC=golang-dev, remy https://golang.org/cl/6558043
40 lines
704 B
Go
40 lines
704 B
Go
// run
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// Copyright 2012 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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// Issue 4138: bug in floating-point registers numbering.
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// Makes 6g unable to use more than 11 registers.
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package main
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func formula() float32 {
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mA := [1]float32{1.0}
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det1 := mA[0]
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det2 := mA[0]
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det3 := mA[0]
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det4 := mA[0]
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det5 := mA[0]
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det6 := mA[0]
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det7 := mA[0]
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det8 := mA[0]
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det9 := mA[0]
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det10 := mA[0]
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det11 := mA[0]
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det12 := mA[0]
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return det1 + det2*det3 +
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det4*det5 + det6*det7 +
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det8*det9 + det10*det11 +
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det12
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}
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func main() {
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x := formula()
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if x != 7.0 {
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println(x, 7.0)
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panic("x != 7.0")
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}
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}
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