Benjamin Kramer fedd86f086 Fix a scalability issue with complex ConstantExprs. ... This is basically the same fix in three different places. We use a set to avoid walking the whole tree of a big ConstantExprs multiple times. For example: (select cmp, (add big_expr 1), (add big_expr 2)) We don't want to visit big_expr twice here, it may consist of thousands of nodes. The testcase exercises this by creating an insanely large ConstantExprs out of a loop. It's questionable if the optimizer should ever create those, but this can be triggered with real C code. Fixes PR15714. llvm-svn: 179458		2013-04-13 12:53:18 +00:00
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2002-07-17-CastRef.ll
2002-07-17-ConstantRef.ll
2002-08-17-FunctionDGE.ll
2002-08-17-WorkListTest.ll
2002-09-12-Redeletion.ll
2003-07-01-SelfReference.ll
2003-10-09-PreserveWeakGlobals.ll
2009-01-05-DeadAliases.ll
2009-02-17-AliasUsesAliasee.ll
basicvariabletest.ll
complex-constantexpr.ll	Fix a scalability issue with complex ConstantExprs.	2013-04-13 12:53:18 +00:00
externally_available.ll
lit.local.cfg