Author: Remi Meier <[email protected]>
Branch: fix-longevity
Changeset: r82502:3271c1578a13
Date: 2016-02-25 14:34 +0100
http://bitbucket.org/pypy/pypy/changeset/3271c1578a13/
Log: (plan_rich,remi) faster update_free_registers
diff --git a/rpython/jit/backend/llsupport/regalloc.py
b/rpython/jit/backend/llsupport/regalloc.py
--- a/rpython/jit/backend/llsupport/regalloc.py
+++ b/rpython/jit/backend/llsupport/regalloc.py
@@ -317,7 +317,6 @@
return self.get_free_register(var, callee=False, target_reg=None)
def update_free_registers(self, regs_in_use):
- # XXX: slow?
self._reinit_free_regs()
for r in regs_in_use:
self.remove_free_register(r)
@@ -342,17 +341,18 @@
reg in self.free_caller_regs
def _reinit_free_regs(self):
- self.free_callee_regs = [reg for reg in self.all_regs
- if reg not in self.save_around_call_regs]
+ self.free_callee_regs = self.save_in_callee_regs[:]
self.free_caller_regs = self.save_around_call_regs[:]
def _change_regs(self, all_regs, save_around_call_regs):
self.all_regs = all_regs
self.save_around_call_regs = save_around_call_regs
+ self.save_in_callee_regs = [reg for reg in all_regs
+ if reg not in save_around_call_regs]
self._reinit_free_regs()
self.is_callee_lookup = [True] * max(
[r.value + 1 for r in self.all_regs])
- for reg in save_around_call_regs:
+ for reg in self.save_around_call_regs:
self.is_callee_lookup[reg.value] = False
def __init__(self, live_ranges, frame_manager=None, assembler=None):
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