Author: Remi Meier <remi.me...@gmail.com>
Branch: fix-longevity
Changeset: r82465:449462f0839e
Date: 2016-02-23 22:38 +0100
http://bitbucket.org/pypy/pypy/changeset/449462f0839e/
Log: rename to distinguish LiveRange objs from longevity dicts
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
@@ -276,10 +276,10 @@
save_around_call_regs = []
frame_reg = None
- def __init__(self, longevity, frame_manager=None, assembler=None):
+ def __init__(self, live_ranges, frame_manager=None, assembler=None):
self.free_regs = self.all_regs[:]
self.free_regs.reverse()
- self.longevity = longevity
+ self.live_ranges = live_ranges
self.temp_boxes = []
if not we_are_translated():
self.reg_bindings = OrderedDict()
@@ -293,12 +293,12 @@
def is_still_alive(self, v):
# Check if 'v' is alive at the current position.
# Return False if the last usage is strictly before.
- return self.longevity.last_use(v) >= self.position
+ return self.live_ranges.last_use(v) >= self.position
def stays_alive(self, v):
# Check if 'v' stays alive after the current position.
# Return False if the last usage is before or at position.
- return self.longevity.last_use(v) > self.position
+ return self.live_ranges.last_use(v) > self.position
def next_instruction(self, incr=1):
self.position += incr
@@ -315,7 +315,7 @@
self._check_type(v)
if isinstance(v, Const):
return
- if not self.longevity.exists(v) or self.longevity.last_use(v) <=
self.position:
+ if not self.live_ranges.exists(v) or self.live_ranges.last_use(v) <=
self.position:
if v in self.reg_bindings:
self.free_regs.append(self.reg_bindings[v])
del self.reg_bindings[v]
@@ -347,9 +347,9 @@
else:
assert len(self.reg_bindings) + len(self.free_regs) ==
len(self.all_regs)
assert len(self.temp_boxes) == 0
- if self.longevity:
+ if self.live_ranges:
for v in self.reg_bindings:
- assert self.longevity.last_use(v) > self.position
+ assert self.live_ranges.last_use(v) > self.position
def try_allocate_reg(self, v, selected_reg=None, need_lower_byte=False):
""" Try to allocate a register, if we have one free.
@@ -425,7 +425,7 @@
continue
if need_lower_byte and reg in self.no_lower_byte_regs:
continue
- max_age = self.longevity.last_use(next)
+ max_age = self.live_ranges.last_use(next)
if cur_max_age < max_age:
cur_max_age = max_age
candidate = next
@@ -444,7 +444,7 @@
"""
self._check_type(v)
if isinstance(v, TempVar):
- self.longevity.new_live_range(v, self.position, self.position)
+ self.live_ranges.new_live_range(v, self.position, self.position)
loc = self.try_allocate_reg(v, selected_reg,
need_lower_byte=need_lower_byte)
if loc:
@@ -554,7 +554,7 @@
loc = self.force_allocate_reg(v, forbidden_vars)
self.assembler.regalloc_mov(prev_loc, loc)
assert v in self.reg_bindings
- if self.longevity.last_use(v) > self.position:
+ if self.live_ranges.last_use(v) > self.position:
# we need to find a new place for variable v and
# store result in the same place
loc = self.reg_bindings[v]
@@ -583,7 +583,7 @@
1 (save all), or 2 (save default+PTRs).
"""
for v, reg in self.reg_bindings.items():
- if v not in force_store and self.longevity.last_use(v) <=
self.position:
+ if v not in force_store and self.live_ranges.last_use(v) <=
self.position:
# variable dies
del self.reg_bindings[v]
self.free_regs.append(reg)
diff --git a/rpython/jit/backend/x86/regalloc.py
b/rpython/jit/backend/x86/regalloc.py
--- a/rpython/jit/backend/x86/regalloc.py
+++ b/rpython/jit/backend/x86/regalloc.py
@@ -515,7 +515,7 @@
# and won't be used after the current operation finishes,
# then swap the role of 'x' and 'y'
if (symm and isinstance(argloc, RegLoc) and
- self.rm.longevity.last_use(y) == self.rm.position):
+ self.rm.live_ranges.last_use(y) == self.rm.position):
x, y = y, x
argloc = self.loc(y)
#
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