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go / go / d29e92be523efd8270c0e7ca0eaa6afa86bbedca
commitd29e92be523efd8270c0e7ca0eaa6afa86bbedca[log] [tgz]
authorKeith Randall <khr@golang.org>Sat Sep 19 12:01:39 2015 -0700
committerKeith Randall <khr@golang.org>Sun Sep 20 07:10:05 2015 +0000
tree1e3d4fc7bad664b3d8bc441f1966dd09be116be5
parent37590bddc417c2675f4979a9467edc1961f88b61 [diff]
[dev.ssa] cmd/compile: Use varkill only for non-SSAable vars

For variables which get SSA'd, SSA keeps track of all the def/kill.
It is only for on-stack variables that we need them.

This reduces stack frame sizes significantly because often the
only use of a variable was a varkill, and without that last use
the variable doesn't get allocated in the frame at all.

Fixes #12602

Change-Id: I3f00a768aa5ddd8d7772f375b25f846086a3e689
Reviewed-on: https://go-review.googlesource.com/14758
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
4 files changed
tree: 1e3d4fc7bad664b3d8bc441f1966dd09be116be5
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
README.md

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