Author: Carl Friedrich Bolz-Tereick <[email protected]>
Branch: regalloc-playground
Changeset: r92350:58247cb00737
Date: 2017-09-07 15:01 +0200
http://bitbucket.org/pypy/pypy/changeset/58247cb00737/
Log: test and fix for corner case
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
@@ -841,6 +841,8 @@
l = self.real_usages
low = 0
high = len(l)
+ if position >= l[-1]:
+ return -1
while low < high:
mid = low + (high - low) // 2 # no overflow ;-)
if position < l[mid]:
diff --git a/rpython/jit/backend/llsupport/test/test_regalloc.py
b/rpython/jit/backend/llsupport/test/test_regalloc.py
--- a/rpython/jit/backend/llsupport/test/test_regalloc.py
+++ b/rpython/jit/backend/llsupport/test/test_regalloc.py
@@ -140,6 +140,8 @@
assert next in lt.real_usages
assert next > i
assert lt.real_usages[lt.real_usages.index(next) - 1] <= i
+ assert lt.next_real_usage(100) == -1
+ assert lt.next_real_usage(101) == -1
def test_fixed_position():
b0, b1, b2 = newboxes(0, 0, 0)
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