Sanjoy Das 14f5080aa1 [BasicAA] Fix zext & sext handling ...

Summary:

There are several unhandled edge cases in BasicAA's GetLinearExpression
method. This changes fixes outstanding issues, including zext / sext of
a constant with the sign bit set, and the refusal to decompose zexts or
sexts of wrapping arithmetic.

Test Plan: Unit tests added in //q.ext.ll//.

Patch by Nick White.

Reviewers: hfinkel, sanjoy

Reviewed By: hfinkel, sanjoy

Subscribers: sanjoy, llvm-commits, hfinkel

Differential Revision: http://reviews.llvm.org/D6682

llvm-svn: 236894

2015-05-08 18:58:55 +00:00

..

2003-02-26-AccessSizeTest.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2003-03-04-GEPCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2003-04-22-GEPProblem.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2003-04-25-GEPCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2003-05-21-GEP-Problem.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2003-06-01-AliasCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2003-07-03-BasicAACrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2003-09-19-LocalArgument.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2003-11-04-SimpleCases.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2003-12-11-ConstExprGEP.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

2004-07-28-MustAliasbug.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2006-03-03-BadArraySubscript.ll

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

2006-11-03-BasicAAVectorCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2007-01-13-BasePointerBadNoAlias.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2007-08-01-NoAliasAndCalls.ll

…

2007-08-01-NoAliasAndGEP.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

2007-08-05-GetOverloadedModRef.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2007-10-24-ArgumentsGlobals.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

2007-11-05-SizeCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2007-12-08-OutOfBoundsCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2008-04-15-Byval.ll

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

2008-06-02-GEPTailCrash.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

2008-11-23-NoaliasRet.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2009-03-04-GEPNoalias.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2009-10-13-AtomicModRef.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2009-10-13-GEP-BaseNoAlias.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2010-09-15-GEP-SignedArithmetic.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2014-03-18-Maxlookup-reached.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

aligned-overread.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

args-rets-allocas-loads.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

assume.ll

…

byval.ll

[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction

2015-04-16 23:24:18 +00:00

cas.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

constant-over-index.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

cs-cs.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

dag.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

empty.ll

…

featuretest.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

full-store-partial-alias.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

gcsetest.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

gep-alias.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

getmodrefinfo-cs-cs.ll

…

global-size.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

intrinsics.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

invariant_load.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

memset_pattern.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

modref.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

must-and-partial.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

no-escape-call.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

noalias-bugs.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

noalias-geps.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

noalias-param.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

nocapture.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

phi-aa.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

phi-and-select.ll

…

phi-spec-order.ll

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

phi-speculation.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

pr18573.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

pure-const-dce.ll

…

q.bad.ll

[BasicAA] Fix zext & sext handling

2015-05-08 18:58:55 +00:00

store-promote.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

struct-geps.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

tailcall-modref.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

underlying-value.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

unreachable-block.ll

[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction

2015-02-27 19:29:02 +00:00

zext.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00