8ce37e4110
The non-simple, phi-insertion algorithm can leave OpFwdRefs in the SSA graph unresolved if they're in dead blocks. Normally, these would be harmlessly removed later during SSA dead-code elimination, but those passes are omitted for -N builds. And so they reach zcse, where the Value.Aux is used within a hash map. This became a problem after golang.org/cl/275788, which added FwdRefAux to wrap OpFwdRef's ir.Node, and to ensure that it's not compared for equality / used as a map key. This CL adds a simple fix: if there are any OpFwdRefs remaining after resolveFwdRef, then they must be dead code and we can simply replace them with OpUnknown. Change-Id: I72e4116d52d3f6441ebb0bf6160906617cd59513 Reviewed-on: https://go-review.googlesource.com/c/go/+/277075 Trust: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@golang.org> |
||
|---|---|---|
| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| SECURITY.md | ||
| favicon.ico | ||
| robots.txt | ||
README.md
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Download and Install
Binary Distributions
Official binary distributions are available at https://golang.org/dl/.
After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.
Install From Source
If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.
Contributing
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.