Dan Gohman 763bad1a2b Generalize isLoopGuardedByCond's checking to consider two ... SCEVUnknowns with identical Instructions to be equal. This allows it to analze cases such as the attached testcase, where the front-end has cloned the loop controlling expression. Along with r73805, this lets IndVarSimplify eliminate all the sign-extend casts in the loop in the attached testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73807 91177308-0d34-0410-b5e6-96231b3b80d8		2009-06-20 00:35:32 +00:00
..
2002-09-09-PointerIndVar.ll
2003-04-16-ExprAnalysis.ll
2003-09-12-MultiplePred.ll
2003-09-23-NotAtTop.ll	Teach SCEVExpander's visitAddRecExpr to reuse an existing canonical	2009-06-13 16:25:49 +00:00
2003-12-10-IndVarDeadCode.ll
2003-12-10-RemoveInstrCrash.ll
2003-12-15-Crash.ll
2003-12-21-IndVarSize.ll
2004-03-10-PHIInsertionBug.ll
2004-04-05-InvokeCastCrash.ll
2004-04-07-ScalarEvolutionCrash.ll
2005-02-11-InvokeCrash.ll
2005-02-17-TruncateExprCrash.ll
2005-02-26-ExitValueCompute.ll
2005-06-15-InstMoveCrash.ll
2005-11-18-Crash.ll
2006-03-31-NegativeStride.ll
2006-06-16-Indvar-LCSSA-Crash.ll
2006-09-20-LFTR-Crash.ll
2006-12-10-BitCast.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
2007-01-06-TripCount.ll
2007-01-08-X86-64-Pointer.ll	Add nounwind to a few tests.	2009-05-18 15:16:49 +00:00
2007-06-06-DeleteDanglesPtr.ll
2007-11-23-BitcastCrash.ll
2008-06-15-SCEVExpanderBug.ll
2008-09-02-IVType.ll
2008-10-03-CouldNotCompute.ll
2008-11-03-Floating.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
2008-11-17-Floating.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
2008-11-25-APFloatAssert.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
2009-04-14-shorten_iv_vars.ll	Enhance induction variable code to remove the	2009-04-15 01:10:12 +00:00
2009-04-15-shorten-iv-vars-2.ll	Factor the code for collecting IV users out of LSR into an IVUsers class,	2009-05-12 02:17:14 +00:00
2009-04-22-IndvarCrash.ll	Make sure both operands have binary instructions have the same type.	2009-04-22 23:39:28 +00:00
2009-04-27-Floating.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
2009-05-24-useafterfree.ll	The rewriter may hold references to instructions that are deleted because they are trivially dead.	2009-05-24 14:23:16 +00:00
ada-loops.ll	Factor the code for collecting IV users out of LSR into an IVUsers class,	2009-05-12 02:17:14 +00:00
addrec-gep.ll	Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid	2009-05-24 18:06:31 +00:00
ashr-tripcount.ll	Generalize isLoopGuardedByCond's checking to consider two	2009-06-20 00:35:32 +00:00
avoid-i0.ll	Handle ands with ~0 correctly too. This fixes PR4052.	2009-04-27 01:41:10 +00:00
casted-argument.ll	Fix an error in this test.	2009-04-23 15:22:28 +00:00
complex-scev.ll
dg.exp
divide-pointer.ll	In cases where a pointer value is an operand of a multiplication or	2009-05-26 17:41:16 +00:00
exit_value_tests.ll
gep-with-mul-base.ll	Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid	2009-05-24 18:06:31 +00:00
interesting-invoke-use.ll	Teach IndVarSimplify's FixUsesBeforeDefs to handle InvokeInsts by	2009-05-22 16:47:11 +00:00
iterationCount_zext_or_trunc.ll
iv-zext.ll	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
lftr_simple.ll
lftr-other-uses.ll	When rewriting the loop exit test with the canonical induction variable,	2009-05-24 19:11:38 +00:00
loop_evaluate_1.ll
loop_evaluate_2.ll
loop_evaluate_3.ll
loop_evaluate_4.ll
loop_evaluate_5.ll	When forgetting SCEVs for loop PHIs, don't forget SCEVUnknown values.	2009-05-12 01:27:58 +00:00
loop_evaluate_6.ll	Factor the code for collecting IV users out of LSR into an IVUsers class,	2009-05-12 02:17:14 +00:00
masked-iv.ll	Remove the code from IVUsers that attempted to handle	2009-06-18 16:54:06 +00:00
pointer-indvars.ll
pointer.ll	Implement more aggressive folding of add operand lists when	2009-06-14 22:58:51 +00:00
preserve-gep-remainder.ll	Teach SCEVExpander to avoid creating over-indexed GEP indices when	2009-05-27 02:00:53 +00:00
preserve-gep.ll	Teach SCEVExpander to expand arithmetic involving pointers into GEP	2009-05-19 02:15:55 +00:00
preserve-signed-wrap.ll	Back out the change in 64918 that used sign-extensions when promoting	2009-02-23 23:20:35 +00:00
promote-iv-to-eliminate-casts.ll	Back out the change in 64918 that used sign-extensions when promoting	2009-02-23 23:20:35 +00:00
shrunk-constant.ll	Remove the code from IVUsers that attempted to handle	2009-06-18 16:54:06 +00:00
signed-trip-count.ll	Back out the change in 64918 that used sign-extensions when promoting	2009-02-23 23:20:35 +00:00
subtract.ll
tripcount_compute.ll
tripcount_infinite.ll
variable-stride-ivs-0.ll	Don't attempt to simplify an non-affine IV expression if it can't	2009-06-03 19:11:31 +00:00
variable-stride-ivs-1.ll	Don't attempt to simplify an non-affine IV expression if it can't	2009-06-03 19:11:31 +00:00