Author: Alex Gaynor <[email protected]>
Branch:
Changeset: r44191:ce505f035396
Date: 2011-05-15 13:25 -0500
http://bitbucket.org/pypy/pypy/changeset/ce505f035396/
Log: Optimize away uint_floordiv(i0, 1). Updated test_pypy_c_new to
reflect this.
diff --git a/pypy/jit/metainterp/optimizeopt/rewrite.py
b/pypy/jit/metainterp/optimizeopt/rewrite.py
--- a/pypy/jit/metainterp/optimizeopt/rewrite.py
+++ b/pypy/jit/metainterp/optimizeopt/rewrite.py
@@ -15,7 +15,7 @@
def reconstruct_for_next_iteration(self, optimizer, valuemap):
return self
-
+
def propagate_forward(self, op):
args = self.optimizer.make_args_key(op)
if self.find_rewritable_bool(op, args):
@@ -40,7 +40,7 @@
return False
return self.is_emittable(op)
-
+
def try_boolinvers(self, op, targs):
oldop = self.optimizer.pure_operations.get(targs, None)
if oldop is not None and oldop.getdescr() is op.getdescr():
@@ -69,7 +69,7 @@
try:
oldopnum = opboolreflex[op.getopnum()] # FIXME: add INT_ADD,
INT_MUL
targs = self.optimizer.make_args_key(ResOperation(oldopnum,
[args[1], args[0]],
- None))
+ None))
oldop = self.optimizer.pure_operations.get(targs, None)
if oldop is not None and oldop.getdescr() is op.getdescr():
self.make_equal_to(op.result, self.getvalue(oldop.result))
@@ -80,7 +80,7 @@
try:
oldopnum = opboolinvers[opboolreflex[op.getopnum()]]
targs = self.optimizer.make_args_key(ResOperation(oldopnum,
[args[1], args[0]],
- None))
+ None))
if self.try_boolinvers(op, targs):
return True
except KeyError:
@@ -157,6 +157,15 @@
self.emit_operation(op)
+ def optimize_UINT_FLOORDIV(self, op):
+ v1 = self.getvalue(op.getarg(0))
+ v2 = self.getvalue(op.getarg(1))
+
+ if v2.is_constant() and v2.box.getint() == 1:
+ self.make_equal_to(op.result, v1)
+ else:
+ self.emit_operation(op)
+
def optimize_INT_LSHIFT(self, op):
v1 = self.getvalue(op.getarg(0))
v2 = self.getvalue(op.getarg(1))
@@ -322,7 +331,7 @@
self.emit_operation(op)
resvalue = self.getvalue(op.result)
self.optimizer.loop_invariant_results[key] = resvalue
-
+
def _optimize_nullness(self, op, box, expect_nonnull):
value = self.getvalue(box)
if value.is_nonnull():
@@ -381,7 +390,7 @@
## if realclassbox is not None:
## checkclassbox = self.optimizer.cpu.typedescr2classbox(op.descr)
## result = self.optimizer.cpu.ts.subclassOf(self.optimizer.cpu,
-## realclassbox,
+## realclassbox,
## checkclassbox)
## self.make_constant_int(op.result, result)
## return
diff --git a/pypy/jit/metainterp/test/test_optimizeopt.py
b/pypy/jit/metainterp/test/test_optimizeopt.py
--- a/pypy/jit/metainterp/test/test_optimizeopt.py
+++ b/pypy/jit/metainterp/test/test_optimizeopt.py
@@ -2843,6 +2843,18 @@
"""
self.optimize_loop(ops, expected)
+ def test_fold_partially_constant_uint_floordiv(self):
+ ops = """
+ [i0]
+ i1 = uint_floordiv(i0, 1)
+ jump(i1)
+ """
+ expected = """
+ [i0]
+ jump(i0)
+ """
+ self.optimize_loop(ops, expected)
+
# ----------
class TestLLtype(OptimizeOptTest, LLtypeMixin):
@@ -5746,7 +5758,7 @@
"""
expected = """
[]
- guard_not_invalidated() []
+ guard_not_invalidated() []
escape(-4247)
jump()
"""
diff --git a/pypy/module/pypyjit/test_pypy_c/test_pypy_c_new.py
b/pypy/module/pypyjit/test_pypy_c/test_pypy_c_new.py
--- a/pypy/module/pypyjit/test_pypy_c/test_pypy_c_new.py
+++ b/pypy/module/pypyjit/test_pypy_c/test_pypy_c_new.py
@@ -1043,17 +1043,13 @@
assert loop.match("""
i10 = int_lt(i5, i6)
guard_true(i10, descr=<Guard3>)
- # This can be improved if the JIT realized the lookup of i5
produces
- # a constant and thus can be removed entirely
i120 = int_add(i5, 1)
guard_not_invalidated(descr=<Guard4>)
i140 = int_lt(0, i120)
guard_true(i140, descr=<Guard5>)
- i13 = uint_floordiv(i5, 1) # XXX we could remove that
- i15 = int_add(i13, 1)
- i17 = int_lt(i15, 0)
+ i17 = int_lt(i120, 0)
guard_false(i17, descr=<Guard6>)
- i20 = int_sub(i15, i5)
+ i20 = int_sub(i120, i5)
i21 = int_add_ovf(i5, i20)
guard_no_overflow(descr=<Guard7>)
--TICK--
@@ -1092,7 +1088,7 @@
--TICK--
jump(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, i28, i25, i19, i13,
p14, p15, descr=<Loop0>)
""")
-
+
def test_mutate_class(self):
def fn(n):
class A(object):
@@ -1497,7 +1493,7 @@
def main():
i=0
sa=0
- while i < 300:
+ while i < 300:
sa+=min(max(i, 3000), 4000)
i+=1
return sa
@@ -1534,7 +1530,7 @@
p76 = call_may_force(ConstClass(min_max_loop__max), _, _,
descr=...)
...
""")
-
+
def test_iter_max(self):
def main():
i = 2
@@ -1552,7 +1548,7 @@
assert len(guards) < 20
assert loop.match_by_id('max',"""
...
- p76 = call_may_force(ConstClass(min_max_loop__max), _, _,
descr=...)
+ p76 = call_may_force(ConstClass(min_max_loop__max), _, _,
descr=...)
...
""")
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