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llvm-mirror/test/Transforms/IndVarSimplify
Benjamin Kramer 3578c169bf Teach SCEV's icmp simplification logic that a-b == 0 is equivalent to a == b.
This also required making recursive simplifications until
nothing changes or a hard limit (currently 3) is hit.

With the simplification in place indvars can canonicalize
loops of the form
for (unsigned i = 0; i < a-b; ++i)
into
for (unsigned i = 0; i != a-b; ++i)
which used to fail because SCEV created a weird umax expr
for the backedge taken count.

llvm-svn: 157701
2012-05-30 18:32:23 +00:00
..
2002-09-09-PointerIndVar.ll
2003-04-16-ExprAnalysis.ll
2003-09-23-NotAtTop.ll
2003-12-10-RemoveInstrCrash.ll
2003-12-15-Crash.ll
2004-03-10-PHIInsertionBug.ll
2004-04-05-InvokeCastCrash.ll Update to new EH scheme. 2011-09-01 01:02:41 +00:00
2004-04-07-ScalarEvolutionCrash.ll
2005-02-11-InvokeCrash.ll Update to new EH scheme. 2011-09-01 01:02:41 +00:00
2005-02-17-TruncateExprCrash.ll Update to new EH scheme. 2011-09-01 01:02:41 +00:00
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 Removed colons from some target datalayout strings in test, since they don't match the required format. 2011-10-12 22:24:17 +00:00
2009-04-15-shorten-iv-vars-2.ll Removed colons from some target datalayout strings in test, since they don't match the required format. 2011-10-12 22:24:17 +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
2011-09-10-widen-nsw.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
2011-09-19-vectoriv.ll [indvars] Fix PR10946: SCEV cannot handle Vector IVs. 2011-09-19 17:54:39 +00:00
2011-09-27-hoistsext.ll Test case for r140670: indvars should hoist sext. 2011-09-28 02:13:32 +00:00
2011-10-27-lftrnull.ll LFTR should avoid a type mismatch with null pointer IVs. 2011-10-28 03:45:11 +00:00
2011-11-01-lftrptr.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
2011-11-15-multiexit.ll Fix SCEV overly optimistic back edge taken count for multi-exit loops. 2011-11-16 00:52:40 +00:00
2011-11-17-selfphi.ll Fix an overly general check in SimplifyIndvar to handle useless phi cycles. 2011-11-17 23:36:35 +00:00
ada-loops.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
ashr-tripcount.ll Removed colons from some target datalayout strings in test, since they don't match the required format. 2011-10-12 22:24:17 +00:00
avoid-i0.ll Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic. 2011-11-27 06:54:59 +00:00
casted-argument.ll Fix declarations in a few more tests. 2010-04-17 21:29:25 +00:00
crash.ll Update to new EH scheme. 2011-09-01 01:02:41 +00:00
dangling-use.ll
divide-pointer.ll
elim-extend.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
eliminate-comparison.ll Remove the Expr member from IVUsers. Instead of remembering the expression, 2010-04-19 21:48:58 +00:00
eliminate-max.ll Teach ScalarEvolution to simplify smax and umax when it can prove 2010-04-13 16:51:03 +00:00
eliminate-rem.ll Teach IndVarSimplify how to eliminate remainder operators where the 2010-04-13 01:46:36 +00:00
exit_value_tests.ll
floating-point-iv.ll Reapply r139759. Disable IV rewriting by default. See PR10916. 2011-09-15 20:58:37 +00:00
indirectbr.ll Disable indvars on loops when LoopSimplify form is not available. 2010-06-18 01:35:11 +00:00
interesting-invoke-use.ll Update to new EH scheme. 2011-09-01 01:02:41 +00:00
iterationCount_zext_or_trunc.ll
iv-fold.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
iv-sext.ll Removed colons from some target datalayout strings in test, since they don't match the required format. 2011-10-12 22:24:17 +00:00
iv-zext.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
lftr_simple.ll
lftr-other-uses.ll
lftr-promote.ll
lftr-reuse.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
lit.local.cfg Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
loop_evaluate7.ll
loop_evaluate8.ll
loop_evaluate9.ll Fix SCEV overly optimistic back edge taken count for multi-exit loops. 2011-11-16 00:52:40 +00:00
loop_evaluate10.ll Fix SCEV overly optimistic back edge taken count for multi-exit loops. 2011-11-16 00:52:40 +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
no-iv-rewrite.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
phi-uses-value-multiple-times.ll Test case for r130799 - indvars: Added canExpandBackEdgeTakenCount. 2011-05-24 00:17:53 +00:00
polynomial-expand.ll
preserve-signed-wrap.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
promote-iv-to-eliminate-casts.ll
shrunk-constant.ll
signed-trip-count.ll
single-element-range.ll Remove arm_apcscc from the test files. It is the default and doing this 2010-06-17 15:18:27 +00:00
sink-alloca.ll Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic. 2011-11-27 06:54:59 +00:00
sink-trapping.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 Suppress LinearFunctionTestReplace when the computed backedge-taken 2010-04-12 21:13:43 +00:00
uglygep.ll Fix this test. 2010-07-16 01:28:45 +00:00
ult-sub-to-eq.ll Teach SCEV's icmp simplification logic that a-b == 0 is equivalent to a == b. 2012-05-30 18:32:23 +00:00
variable-stride-ivs-0.ll Remove redundant -enable-iv-rewrite=false flags from test cases. 2012-03-22 17:09:04 +00:00
variable-stride-ivs-1.ll