| commit | 439c0c8be85f93306460d82ad12b47c56ee53420 | [log] [tgz] |
|---|---|---|
| author | Keith Randall <khr@golang.org> | Tue May 23 22:55:59 2017 -0700 |
| committer | Keith Randall <khr@golang.org> | Wed May 24 15:44:39 2017 +0000 |
| tree | 209e29fc1e6040855847ce28a7d0888f3a023eb1 | |
| parent | e396667ba31b971a892bf48229071aed93da1499 [diff] |
[release-branch.go1.8] cmd/compile: don't move spills to loop exits where the spill is dead We shouldn't move a spill to a loop exit where the spill itself is dead. The stack location assigned to the spill might already be reused by another spill at this point. The case we previously handled incorrectly is the one where the value being spilled is still live, but the spill itself is dead. Fixes #20472 Patching directly on the release branch because the spill moving code has already been rewritten for 1.9. (And it doesn't have this bug.) Change-Id: I26c5273dafd98d66ec448750073c2b354ef89ad6 Reviewed-on: https://go-review.googlesource.com/44033 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
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