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(parent: ba94dd3) | patch
cmd/compile: remove duplicate nilchecks
authorKeith Randall <khr@golang.org>
Tue, 27 Sep 2016 21:39:27 +0000 (14:39 -0700)
committerKeith Randall <khr@golang.org>
Tue, 27 Sep 2016 23:54:01 +0000 (23:54 +0000)
commit98938189a16a764007bce7fcd4bfeb2386043208
tree6d4119b0f71b4ab1084e45c01bb7478e166de530tree
parentba94dd34385af3352660fb4bfa2a2d97fb937088commit | diff
cmd/compile: remove duplicate nilchecks

Mark nil check operations as faulting if their arg is zero.
This lets the late nilcheck pass remove duplicates.

Fixes #17242.

Change-Id: I4c9938d8a5a1e43edd85b4a66f0b34004860bcd9
Reviewed-on: https://go-review.googlesource.com/29952
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
src/cmd/compile/internal/ssa/gen/386Ops.go diff | blob | history
src/cmd/compile/internal/ssa/gen/AMD64Ops.go diff | blob | history
src/cmd/compile/internal/ssa/gen/ARM64Ops.go diff | blob | history
src/cmd/compile/internal/ssa/gen/ARMOps.go diff | blob | history
src/cmd/compile/internal/ssa/gen/MIPS64Ops.go diff | blob | history
src/cmd/compile/internal/ssa/gen/PPC64Ops.go diff | blob | history
src/cmd/compile/internal/ssa/gen/S390XOps.go diff | blob | history
src/cmd/compile/internal/ssa/opGen.go diff | blob | history
test/nilptr3.go diff | blob | history
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