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b71ea0b7dd
Code generation for OpAMD64CMOV[WLQ]EQF uses AX as a scratch register, but only CMOVQEQF, correctly lets compiler know. Mark other 2 as clobbering AX. Fixes #26097 Change-Id: I2a65bd67bf18a540898b4a0ae6c8766e0b767b19 Reviewed-on: https://go-review.googlesource.com/121336 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com> Reviewed-by: Giovanni Bajo <rasky@develer.com>
48 lines
829 B
Go
48 lines
829 B
Go
// run
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// Copyright 2018 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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package main
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//go:noinline
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func cmovClobberAX64(v1, v2 int64, x1, x2 float64) int64 {
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r := v1
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if x1 == x2 {
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r = v2
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}
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return r
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}
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//go:noinline
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func cmovClobberAX32(v1, v2 int32, x1, x2 float64) int32 {
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r := v1
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if x1 == x2 {
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r = v2
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}
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return r
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}
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//go:noinline
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func cmovClobberAX16(v1, v2 int16, x1, x2 float64) int16 {
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r := v1
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if x1 == x2 {
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r = v2
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}
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return r
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}
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func main() {
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if cmovClobberAX16(1, 2, 4.0, 5.0) != 1 {
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panic("CMOVQEQF causes incorrect code")
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}
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if cmovClobberAX32(1, 2, 4.0, 5.0) != 1 {
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panic("CMOVQEQF causes incorrect code")
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}
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if cmovClobberAX64(1, 2, 4.0, 5.0) != 1 {
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panic("CMOVQEQF causes incorrect code")
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}
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}
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