| commit | 4ce06f4b5caab3874f30f14551aa3f8e08f2de3e | [log] [tgz] |
|---|---|---|
| author | Josh Bleecher Snyder <josharian@gmail.com> | Thu Feb 05 15:38:53 2015 -0800 |
| committer | Josh Bleecher Snyder <josharian@gmail.com> | Fri Feb 06 19:05:47 2015 +0000 |
| tree | aa8ca2a25413df5fc40421e8eafa3df6951da545 | |
| parent | 82a761b656704c07a94c12b10141a0cdba1a4534 [diff] |
cmd/gc: eliminate dead code in switch statements Ordinary switch statements are rewritten into a sequence of if statements. Staticly dead cases were not being eliminated because the rewrite introduced a temporary, which hid the fact that the case was a constant. Stop doing that. This eliminates dead code in the standard library at: runtime/cgocall.go:219 runtime/cgocall.go:269 debug/gosym/pclntab.go:175 debug/macho/file.go:208 math/big/nat.go:635 math/big/nat.go:850 math/big/nat.go:1058 cmd/pprof/internal/commands/commands.go:86 net/sock_bsd.go:19 cmd/go/build.go:2657 cmd/go/env.go:90 Fixes #9608. Change-Id: Ic23a05dfbb1ad91d5f62a6506b35a13e51b33e38 Reviewed-on: https://go-review.googlesource.com/3980 Reviewed-by: Keith Randall <khr@golang.org>
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