Author: Hakan Ardo <[email protected]>
Branch:
Changeset: r53024:e81b673c6344
Date: 2012-02-29 20:38 +0100
http://bitbucket.org/pypy/pypy/changeset/e81b673c6344/
Log: resurrect 3 lost overflow tests
diff --git a/pypy/jit/metainterp/test/test_ajit.py
b/pypy/jit/metainterp/test/test_ajit.py
--- a/pypy/jit/metainterp/test/test_ajit.py
+++ b/pypy/jit/metainterp/test/test_ajit.py
@@ -144,7 +144,7 @@
'int_mul': 1, 'guard_true': 2, 'int_sub': 2})
- def test_loop_invariant_mul_ovf(self):
+ def test_loop_invariant_mul_ovf1(self):
myjitdriver = JitDriver(greens = [], reds = ['y', 'res', 'x'])
def f(x, y):
res = 0
@@ -235,6 +235,65 @@
'guard_true': 4, 'int_sub': 4, 'jump': 3,
'int_mul': 3, 'int_add': 4})
+ def test_loop_invariant_mul_ovf2(self):
+ myjitdriver = JitDriver(greens = [], reds = ['y', 'res', 'x'])
+ def f(x, y):
+ res = 0
+ while y > 0:
+ myjitdriver.can_enter_jit(x=x, y=y, res=res)
+ myjitdriver.jit_merge_point(x=x, y=y, res=res)
+ b = y * 2
+ try:
+ res += ovfcheck(x * x) + b
+ except OverflowError:
+ res += 1
+ y -= 1
+ return res
+ res = self.meta_interp(f, [sys.maxint, 7])
+ assert res == f(sys.maxint, 7)
+ self.check_trace_count(1)
+ res = self.meta_interp(f, [6, 7])
+ assert res == 308
+
+ def test_loop_invariant_mul_bridge_ovf1(self):
+ myjitdriver = JitDriver(greens = [], reds = ['y', 'res', 'x1', 'x2'])
+ def f(x1, x2, y):
+ res = 0
+ while y > 0:
+ myjitdriver.can_enter_jit(x1=x1, x2=x2, y=y, res=res)
+ myjitdriver.jit_merge_point(x1=x1, x2=x2, y=y, res=res)
+ try:
+ res += ovfcheck(x1 * x1)
+ except OverflowError:
+ res += 1
+ if y<32 and (y>>2)&1==0:
+ x1, x2 = x2, x1
+ y -= 1
+ return res
+ res = self.meta_interp(f, [6, sys.maxint, 48])
+ assert res == f(6, sys.maxint, 48)
+
+ def test_loop_invariant_mul_bridge_ovf2(self):
+ myjitdriver = JitDriver(greens = [], reds = ['y', 'res', 'x1', 'x2',
'n'])
+ def f(x1, x2, n, y):
+ res = 0
+ while y > 0:
+ myjitdriver.can_enter_jit(x1=x1, x2=x2, y=y, res=res, n=n)
+ myjitdriver.jit_merge_point(x1=x1, x2=x2, y=y, res=res, n=n)
+ try:
+ res += ovfcheck(x1 * x1)
+ except OverflowError:
+ res += 1
+ y -= 1
+ if y&4 == 0:
+ x1, x2 = x2, x1
+ return res
+ res = self.meta_interp(f, [sys.maxint, 6, 32, 48])
+ assert res == f(sys.maxint, 6, 32, 48)
+ res = self.meta_interp(f, [6, sys.maxint, 32, 48])
+ assert res == f(6, sys.maxint, 32, 48)
+
+
def test_loop_invariant_intbox(self):
myjitdriver = JitDriver(greens = [], reds = ['y', 'res', 'x'])
class I:
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