Author: Manuel Jacob <[email protected]>
Branch: llvm-translation-backend
Changeset: r81510:56cf0a68905a
Date: 2015-12-31 16:55 +0100
http://bitbucket.org/pypy/pypy/changeset/56cf0a68905a/
Log: Implement inhibit_tail_call marker.
This raises the required LLVM version to 3.8 (as of now unreleased).
diff --git a/rpython/translator/llvm/genllvm.py
b/rpython/translator/llvm/genllvm.py
--- a/rpython/translator/llvm/genllvm.py
+++ b/rpython/translator/llvm/genllvm.py
@@ -1216,10 +1216,17 @@
tmp.append('{arg.TV}'.format(arg=arg))
args = ', '.join(tmp)
+ tailmarker = ''
+ try:
+ if fn.value._obj.graph.inhibit_tail_call:
+ tailmarker = 'notail '
+ except AttributeError:
+ pass
+
if result.type is LLVMVoid:
- fmt = 'call void {fn.V}({args})'
+ fmt = '{tailmarker}call void {fn.V}({args})'
else:
- fmt = '{result.V} = call {result.T} {fn.V}({args})'
+ fmt = '{result.V} = {tailmarker}call {result.T} {fn.V}({args})'
self.w(fmt.format(**locals()))
op_indirect_call = op_direct_call
diff --git a/rpython/translator/llvm/test/test_genllvm.py
b/rpython/translator/llvm/test/test_genllvm.py
--- a/rpython/translator/llvm/test/test_genllvm.py
+++ b/rpython/translator/llvm/test/test_genllvm.py
@@ -655,6 +655,16 @@
assert not fc(r_longfloat(0.0))
assert fc(r_longfloat(1.0))
+ def test_recursive_notail(self):
+ def f(n):
+ if n <= 0:
+ return 42
+ return f(n+1)
+ def entry_point():
+ return f(1)
+ fc = self.getcompiled(entry_point, [])
+ fc(expected_exception_name='StackOverflow')
+
class TestLowLevelTypeLLVM(_LLVMMixin, test_lltyped.TestLowLevelType):
def getcompiled(self, func, argtypes):
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