Author: David Schneider <[email protected]>
Branch: arm-backed-float
Changeset: r44511:ea74932e6aa5
Date: 2011-05-26 14:20 +0200
http://bitbucket.org/pypy/pypy/changeset/ea74932e6aa5/
Log: when spilling a variable or loading a spilled one use an immediate
value to store the offset on the stack if it is in the range -4095
to 4095
diff --git a/pypy/jit/backend/arm/assembler.py
b/pypy/jit/backend/arm/assembler.py
--- a/pypy/jit/backend/arm/assembler.py
+++ b/pypy/jit/backend/arm/assembler.py
@@ -803,19 +803,21 @@
if loc.is_stack() or prev_loc.is_stack():
temp = r.lr
if loc.is_stack() and prev_loc.is_reg():
- offset = ConstInt(loc.position*-WORD)
- if not _check_imm_arg(offset):
- self.mc.gen_load_int(temp.value, offset.value)
+ # spill a core register
+ offset = ConstInt(loc.position*WORD)
+ if not _check_imm_arg(offset, size=0xFFF):
+ self.mc.gen_load_int(temp.value, -1*offset.value)
self.mc.STR_rr(prev_loc.value, r.fp.value, temp.value,
cond=cond)
else:
- self.mc.STR_ri(prev_loc.value, r.fp.value, offset.value,
cond=cond)
+ self.mc.STR_ri(prev_loc.value, r.fp.value,
imm=-1*offset.value, cond=cond)
elif loc.is_reg() and prev_loc.is_stack():
- offset = ConstInt(prev_loc.position*-WORD)
- if not _check_imm_arg(offset):
- self.mc.gen_load_int(temp.value, offset.value)
+ # unspill a core register
+ offset = ConstInt(prev_loc.position*WORD)
+ if not _check_imm_arg(offset, size=0xFFF):
+ self.mc.gen_load_int(temp.value, -1*offset.value)
self.mc.LDR_rr(loc.value, r.fp.value, temp.value,
cond=cond)
else:
- self.mc.LDR_ri(loc.value, r.fp.value, offset.value,
cond=cond)
+ self.mc.LDR_ri(loc.value, r.fp.value, imm=-1*offset.value,
cond=cond)
elif loc.is_stack() and prev_loc.is_vfp_reg():
# spill vfp register
offset = ConstInt(loc.position*-WORD)
_______________________________________________
pypy-commit mailing list
[email protected]
http://mail.python.org/mailman/listinfo/pypy-commit
