Michael Kuperstein 6418278e7d Fix mem2reg to correctly handle allocas only used in a single block ... Currently, a load from an alloca that is used in as single block and is not preceded by a store is replaced by undef. This is not always correct if the single block is inside a loop. Fix the logic so that: 1) If there are no stores in the block, replace the load with an undef, as before. 2) If there is a store (regardless of where it is in the block w.r.t the load), bail out, and let the rest of mem2reg handle this alloca. Patch by: gil.rapaport@intel.com Differential Revision: http://reviews.llvm.org/D11355 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242884 91177308-0d34-0410-b5e6-96231b3b80d8		2015-07-22 10:29:29 +00:00
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2002-03-28-UninitializedVal.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2002-05-01-ShouldNotPromoteThisAlloca.ll
2003-04-10-DFNotFound.ll
2003-04-18-DeadBlockProblem.ll
2003-04-24-MultipleIdenticalSuccessors.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2003-06-26-IterativePromote.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2003-10-05-DeadPHIInsertion.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2005-06-30-ReadBeforeWrite.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2005-11-28-Crash.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
2007-08-27-VolatileLoadsStores.ll	[opaque pointer type] Add textual IR support for explicit type parameter to gep operator	2015-03-13 18:20:45 +00:00
atomic.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
ConvertDebugInfo2.ll	IR: Give 'DI' prefix to debug info metadata	2015-04-29 16:38:44 +00:00
ConvertDebugInfo.ll	IR: Give 'DI' prefix to debug info metadata	2015-04-29 16:38:44 +00:00
crash.ll	Move the personality function from LandingPadInst to Function	2015-06-17 20:52:32 +00:00
ignore-lifetime.ll	[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction	2015-02-27 19:29:02 +00:00
pr24179.ll	Fix mem2reg to correctly handle allocas only used in a single block	2015-07-22 10:29:29 +00:00
PromoteMemToRegister.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
UndefValuesMerge.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00