Mercurial > hg > graal-compiler
view make/linux/platform_i486 @ 15388:769fc3629f59
Add phase FlowSensitiveReductionPhase.
It is possible to remove GuardingPiNodes, CheckCastNodes, and FixedGuards during
HighTier under certain conditions (control-flow sensitive conditions).
The phase added in this commit (FlowSensitiveReductionPhase) does that,
and in addition replaces usages with "downcasting" PiNodes when possible
thus resulting in more precise object stamps (e.g., non-null).
Finally, usages of floating, side-effects free, expressions are also simplified
(as per control-flow sensitive conditions).
The newly added phase runs only during HighTier and can be deactivated
using Graal option FlowSensitiveReduction (it is active by default).
author | Miguel Garcia <miguel.m.garcia@oracle.com> |
---|---|
date | Fri, 25 Apr 2014 16:50:52 +0200 |
parents | a49a647afe9a |
children |
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os_family = linux arch = x86 arch_model = x86_32 os_arch = linux_x86 os_arch_model = linux_x86_32 lib_arch = i386 compiler = gcc sysdefs = -DLINUX -D_GNU_SOURCE -DIA32