Author: Armin Rigo <ar...@tunes.org>
Branch:
Changeset: r83668:000e7c099390
Date: 2016-04-14 12:40 +0200
http://bitbucket.org/pypy/pypy/changeset/000e7c099390/
Log: Direct test for load_from_gc_table.
diff --git a/rpython/jit/backend/test/runner_test.py
b/rpython/jit/backend/test/runner_test.py
--- a/rpython/jit/backend/test/runner_test.py
+++ b/rpython/jit/backend/test/runner_test.py
@@ -5263,3 +5263,36 @@
fail = self.cpu.get_latest_descr(deadframe)
res = self.cpu.get_int_value(deadframe, 0)
assert res == 0
+
+ def test_load_from_gc_table_many(self):
+ # Test that 'load_from_gc_table' handles a table of NUM entries.
+ # Done by writing NUM setfield_gc on constants. Each one
+ # requires a load_from_gc_table. The value of NUM is choosen
+ # so that not all of them fit into the ARM's 4096-bytes offset.
+ NUM = 1025
+ S = lltype.GcStruct('S', ('x', lltype.Signed))
+ fielddescr = self.cpu.fielddescrof(S, 'x')
+ table = [lltype.malloc(S) for i in range(NUM)]
+ looptoken = JitCellToken()
+ targettoken = TargetToken()
+ ops = [
+ '[]',
+ ]
+ namespace = {'fielddescr': fielddescr,
+ 'finaldescr': BasicFinalDescr(5)}
+ for i, s in enumerate(table):
+ ops.append('setfield_gc(ConstPtr(ptr%d), %d, descr=fielddescr)'
+ % (i, i))
+ namespace['ptr%d' % i] = lltype.cast_opaque_ptr(llmemory.GCREF, s)
+ ops.append('finish(descr=finaldescr)')
+
+ loop = parse('\n'.join(ops), namespace=namespace)
+
+ self.cpu.compile_loop(loop.inputargs, loop.operations, looptoken)
+ deadframe = self.cpu.execute_token(looptoken)
+ fail = self.cpu.get_latest_descr(deadframe)
+ assert fail.identifier == 5
+
+ # check that all setfield_gc() worked
+ for i, s in enumerate(table):
+ assert s.x == i
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