From: Todd Neal <todd@tneal.org>
Date: Tue, 27 Oct 2015 01:57:53 +0000 (-0500)
Subject: [dev.ssa] cmd/compile/internal/ssa: reorder fuse and dse
X-Git-Tag: go1.7beta1~1623^2^2~124
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=cd01c0be267da70abe8bd6f53109fa2c70e581dc;p=gostls13.git

[dev.ssa] cmd/compile/internal/ssa: reorder fuse and dse

deadstore elimination currently works in a block, fusing before
performing dse eliminates ~1% more stores for make.bash

Change-Id: If5bbddac76bf42616938a8e8e84cb7441fa02f73
Reviewed-on: https://go-review.googlesource.com/16350
Reviewed-by: Keith Randall <khr@golang.org>
---

diff --git a/src/cmd/compile/internal/ssa/compile.go b/src/cmd/compile/internal/ssa/compile.go
index 1c2b7ac2a8..af672eea99 100644
--- a/src/cmd/compile/internal/ssa/compile.go
+++ b/src/cmd/compile/internal/ssa/compile.go
@@ -90,8 +90,8 @@ var passes = [...]pass{
 	{"generic cse", cse},
 	{"nilcheckelim", nilcheckelim},
 	{"generic deadcode", deadcode},
-	{"dse", dse},
 	{"fuse", fuse},
+	{"dse", dse},
 	{"tighten", tighten}, // move values closer to their uses
 	{"lower", lower},
 	{"lowered cse", cse},