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In 31618, we end up comparing the is-stmt-ness of positions to repurpose real instructions as inline marks. If the is-stmt-ness doesn't match, we end up not being able to remove the inline mark. Always use statement-full positions to do the matching, so we always find a match if there is one. Also always use positions that are statements for inline marks. Fixes #31618 Change-Id: Idaf39bdb32fa45238d5cd52973cadf4504f947d5 Reviewed-on: https://go-review.googlesource.com/c/go/+/173324 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: David Chase <drchase@google.com>
23 lines
504 B
Go
23 lines
504 B
Go
// asmcheck
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// Copyright 2019 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 codegen
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// Make sure we remove both inline marks in the following code.
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// Both +5 and +6 should map to real instructions, which can
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// be used as inline marks instead of explicit nops.
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func f(x int) int {
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// amd64:-"XCHGL"
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x = g(x) + 5
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// amd64:-"XCHGL"
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x = g(x) + 6
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return x
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}
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func g(x int) int {
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return x >> 3
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}
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