Keith Randall 3134ab3c2d cmd/compile: redo nil checks ... Get rid of BlockCheck. Josh goaded me into it, and I went down a rabbithole making it happen. NilCheck now panics if the pointer is nil and returns void, as before. BlockCheck is gone, and NilCheck is no longer a Control value for any block. It just exists (and deadcode knows not to throw it away). I rewrote the nilcheckelim pass to handle this case. In particular, there can now be multiple NilCheck ops per block. I moved all of the arch-dependent nil check elimination done as part of ssaGenValue into its own proper pass, so we don't have to duplicate that code for every architecture. Making the arch-dependent nil check its own pass means I needed to add a bunch of flags to the opcode table so I could write the code without arch-dependent ops everywhere. Change-Id: I419f891ac9b0de313033ff09115c374163416a9f Reviewed-on: https://go-review.googlesource.com/29120 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>		2016-09-15 02:42:13 +00:00
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amd64	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
arm	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
arm64	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
big	cmd/compile/internal/big: re-vendor	2016-08-16 14:51:21 +00:00
gc	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
mips64	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
ppc64	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
s390x	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
ssa	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00
syntax	cmd/compile/internal/syntax: remove strbyteseql	2016-09-09 19:25:56 +00:00
test	cmd/compile: Move divconst_test out of test/bench/go1	2016-04-29 16:20:18 +00:00
x86	cmd/compile: redo nil checks	2016-09-15 02:42:13 +00:00