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377c1536f5
These conversion instructions set the condition code and so should be marked as clobbering flags. Fixes #39651. Change-Id: I91cc9687ea70ef0551bb3139c1875071c349d43e Reviewed-on: https://go-review.googlesource.com/c/go/+/238628 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
27 lines
514 B
Go
27 lines
514 B
Go
// run
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// Copyright 2020 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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// Test that float -> integer conversion doesn't clobber
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// flags.
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package main
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//go:noinline
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func f(x, y float64, a, b *bool, r *int64) {
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*a = x < y // set flags
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*r = int64(x) // clobber flags
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*b = x == y // use flags
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}
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func main() {
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var a, b bool
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var r int64
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f(1, 1, &a, &b, &r)
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if a || !b {
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panic("comparison incorrect")
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}
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}
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