Andrew Trick 06988bcf6a Made SCEV's UDiv expressions more canonical. When dividing a ... recurrence, the initial values low bits can sometimes be ignored. To take advantage of this, added FoldIVUser to IndVarSimplify to fold an IV operand into a udiv/lshr if the operator doesn't affect the result. -indvars -disable-iv-rewrite now transforms i = phi i4 i1 = i0 + 1 idx = i1 >> (2 or more) i4 = i + 4 into i = phi i4 idx = i0 >> ... i4 = i + 4 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137013 91177308-0d34-0410-b5e6-96231b3b80d8		2011-08-06 07:00:37 +00:00
..
2002-09-09-PointerIndVar.ll
2003-04-16-ExprAnalysis.ll
2003-09-12-MultiplePred.ll
2003-09-23-NotAtTop.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
2007-01-06-TripCount.ll
2007-06-06-DeleteDanglesPtr.ll
2007-11-23-BitcastCrash.ll
2008-06-15-SCEVExpanderBug.ll
2008-09-02-IVType.ll	manually upgrade a bunch of tests to modern syntax, and remove some that	2011-06-17 03:14:27 +00:00
2008-10-03-CouldNotCompute.ll
2008-11-25-APFloatAssert.ll
2009-04-14-shorten_iv_vars.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
2009-04-15-shorten-iv-vars-2.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
2009-04-22-IndvarCrash.ll
2009-04-27-Floating.ll	Fixes PR9730: indvars: An asserting value handle still pointed to this value	2011-04-27 23:00:03 +00:00
2009-05-24-useafterfree.ll	Correct bogus module triple specifications.	2010-08-30 10:48:29 +00:00
ada-loops.ll	indvars: LinearFunctionTestReplace for non-canonical IVs.	2011-07-18 20:32:31 +00:00
addrec-gep.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
ashr-tripcount.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
avoid-i0.ll
casted-argument.ll
complex-scev.ll
crash.ll	Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable	2010-07-26 18:28:14 +00:00
dangling-use.ll
dg.exp
divide-pointer.ll
elim-extend.ll	Test case pasto (failed when run with IR verifier).	2011-06-02 23:57:27 +00:00
eliminate-comparison.ll
eliminate-max.ll
eliminate-rem.ll
exit_value_tests.ll
floating-point-iv.ll
gep-with-mul-base.ll
indirectbr.ll	Disable indvars on loops when LoopSimplify form is not available.	2010-06-18 01:35:11 +00:00
interesting-invoke-use.ll
iterationCount_zext_or_trunc.ll
iv-fold.ll	Made SCEV's UDiv expressions more canonical. When dividing a	2011-08-06 07:00:37 +00:00
iv-sext.ll	FileCheck-ize a couple of IV unit tests.	2011-05-24 01:02:49 +00:00
iv-zext.ll	indvars -disable-iv-rewrite: Adds support for eliminating identity	2011-06-21 03:22:38 +00:00
lftr_simple.ll
lftr-other-uses.ll
lftr-promote.ll
lftr-reuse.ll	indvars: LinearFunctionTestReplace for non-canonical IVs.	2011-07-18 20:32:31 +00:00
loop_evaluate7.ll
loop_evaluate8.ll
loop_evaluate9.ll
loop_evaluate10.ll	Correct bogus module triple specifications.	2010-08-30 10:48:29 +00:00
loop_evaluate11.ll
loop_evaluate_1.ll
loop_evaluate_2.ll
loop_evaluate_3.ll
loop_evaluate_4.ll
loop_evaluate_5.ll
loop_evaluate_6.ll
masked-iv.ll
max-pointer.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
no-iv-rewrite.ll	indvars: Added getInsertPointForUses to find a valid place to truncate the IV.	2011-07-20 05:32:06 +00:00
phi-uses-value-multiple-times.ll	Test case for r130799 - indvars: Added canExpandBackEdgeTakenCount.	2011-05-24 00:17:53 +00:00
pointer-indvars.ll
pointer.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
polynomial-expand.ll
preserve-gep-loop-variant.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
preserve-gep-nested.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
preserve-gep-remainder.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
preserve-gep.ll	Avoid creating canonical induction variables for non-native types.	2011-03-18 16:50:32 +00:00
preserve-signed-wrap.ll	indvars -disable-iv-rewrite: bug fix involving weird geps and related cleanup.	2011-07-02 02:34:25 +00:00
promote-iv-to-eliminate-casts.ll
shrunk-constant.ll
signed-trip-count.ll
single-element-range.ll
sink-alloca.ll
sink-trapping.ll
subtract.ll
tripcount_compute.ll	Fix ScalarEvolution's tripcount computation for chains of loops	2010-06-29 23:43:06 +00:00
tripcount_infinite.ll
udiv.ll
uglygep.ll	Fix this test.	2010-07-16 01:28:45 +00:00
variable-stride-ivs-0.ll	indvars -disable-iv-rewrite: Added SimplifyCongruentIVs.	2011-07-06 20:50:43 +00:00
variable-stride-ivs-1.ll