commit | ff468a43be1740890a0f3b64a6ab920ea92c2c17 | [log] [tgz] |
---|---|---|
author | Iskander Sharipov <iskander.sharipov@intel.com> | Fri Jul 27 19:32:17 2018 +0300 |
committer | Iskander Sharipov <iskander.sharipov@intel.com> | Mon Sep 03 14:28:51 2018 +0000 |
tree | 2675b9edeecf9bb8180fb3b67761fe098e83930d | |
parent | b794ca64d29f3e584cbdf49bde7141d3c12dd2ab [diff] |
cmd/compile/internal/gc: better handling of self-assignments in esc.go Teach escape analysis to recognize these assignment patterns as not causing the src to leak: val.x = val.y val.x[i] = val.y[j] val.x1.x2 = val.x1.y2 ... etc Helps to avoid "leaking param" with assignments showed above. The implementation is based on somewhat similiar xs=xs[a:b] special case that is ignored by the escape analysis. We may figure out more generalized version of this, but this one looks like a safe step into that direction. Updates #14858 Change-Id: I6fe5bfedec9c03bdc1d7624883324a523bd11fde Reviewed-on: https://go-review.googlesource.com/126395 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
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