David Majnemer 5a57dbef33 IndVarSimplify: check if loop invariant expansion can trap ... IndVarSimplify is willing to move divide instructions outside of their loop bodies if they are invariant of the loop. However, it may not be safe to expand them if we do not know if they can trap. Instead, check to see if it is not safe to expand the instruction and skip the expansion. This fixes PR16041. Testcase by Rafael Ávila de Espíndola. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183239 91177308-0d34-0410-b5e6-96231b3b80d8		2013-06-04 17:51:58 +00:00
..
2002-09-09-PointerIndVar.ll
2003-04-16-ExprAnalysis.ll
2003-09-23-NotAtTop.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 01:28:40 +00:00
2003-12-10-RemoveInstrCrash.ll
2003-12-15-Crash.ll
2004-03-10-PHIInsertionBug.ll
2004-04-05-InvokeCastCrash.ll	Move TargetData to DataLayout.	2012-10-08 16:39:34 +00:00
2004-04-07-ScalarEvolutionCrash.ll
2005-02-11-InvokeCrash.ll
2005-02-17-TruncateExprCrash.ll
2005-02-26-ExitValueCompute.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2005-06-15-InstMoveCrash.ll
2005-11-18-Crash.ll
2006-03-31-NegativeStride.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2006-06-16-Indvar-LCSSA-Crash.ll
2006-09-20-LFTR-Crash.ll
2006-12-10-BitCast.ll
2007-01-06-TripCount.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +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
2008-11-25-APFloatAssert.ll
2009-04-14-shorten_iv_vars.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
2009-04-15-shorten-iv-vars-2.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
2009-04-22-IndvarCrash.ll
2009-04-27-Floating.ll
2009-05-24-useafterfree.ll
2011-09-10-widen-nsw.ll
2011-09-19-vectoriv.ll
2011-09-27-hoistsext.ll
2011-10-27-lftrnull.ll
2011-11-01-lftrptr.ll
2011-11-15-multiexit.ll
2011-11-17-selfphi.ll
2012-07-17-lftr-undef.ll	indvars: Linear function test replace should avoid reusing undef.	2012-07-18 04:35:10 +00:00
2012-10-19-congruent-constant.ll	SCEVExpander: Don't crash when trying to merge two constant phis.	2012-10-19 16:37:30 +00:00
ada-loops.ll
ashr-tripcount.ll
avoid-i0.ll
casted-argument.ll
crash.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 02:33:22 +00:00
dangling-use.ll
divide-pointer.ll
dont-recompute.ll	IndVarSimplify: do not recompute an IV value outside of the loop if :	2013-03-19 20:00:22 +00:00
elim-extend.ll
eliminate-comparison.ll	Follow up to 168711: It's safe to base this analysis on the found compare, just return the value for the right predicate.	2012-11-29 19:07:57 +00:00
eliminate-max.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
eliminate-rem.ll
exit_value_tests.ll
floating-point-iv.ll
indirectbr.ll
interesting-invoke-use.ll
iterationCount_zext_or_trunc.ll
iv-fold.ll
iv-sext.ll
iv-zext.ll	Disallow the undocumented practice of starting the datalayout string with '-'.	2012-11-23 14:51:42 +00:00
lftr_simple.ll
lftr-other-uses.ll
lftr-promote.ll
lftr-reuse.ll	indvars: Linear function test replace should avoid reusing undef.	2012-07-18 04:35:10 +00:00
lit.local.cfg
loop_evaluate7.ll
loop_evaluate8.ll
loop_evaluate9.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
loop_evaluate10.ll	Fix the remaining TCL-style quotes found in the testsuite. This is	2012-07-02 19:09:46 +00:00
loop_evaluate11.ll
loop_evaluate_1.ll
loop_evaluate_2.ll
loop_evaluate_3.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
loop_evaluate_4.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
loop_evaluate_5.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
loop_evaluate_6.ll
masked-iv.ll
no-iv-rewrite.ll	SCEVExpander: Don't crash when trying to merge two constant phis.	2012-10-19 16:37:30 +00:00
phi-uses-value-multiple-times.ll	Revert the test moves from 176733. Use "REQUIRES: asserts" instead.	2013-03-12 16:27:52 +00:00
polynomial-expand.ll
preserve-signed-wrap.ll
promote-iv-to-eliminate-casts.ll
shrunk-constant.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
signed-trip-count.ll
single-element-range.ll
sink-alloca.ll
sink-trapping.ll
tripcount_compute.ll
tripcount_infinite.ll
udiv-invariant-but-traps.ll	IndVarSimplify: check if loop invariant expansion can trap	2013-06-04 17:51:58 +00:00
udiv.ll
uglygep.ll
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
variable-stride-ivs-1.ll
verify-scev.ll	Fix SCEV cache invalidation in LCSSA and LoopSimplify.	2012-10-26 17:31:43 +00:00