Max Kazantsev bf6af8fbf0 [LoopSimplifyCFG] Change logic of dead loops removal to avoid hitting asserts ... The function `LI.erase` has some invariants that need to be preserved when it tries to remove a loop which is not the top-level loop. In particular, it requires loop's preheader to be strictly in loop's parent. Our current logic of deletion of dead blocks may erase the information about preheader before we handle the loop, and therefore we may hit this assertion. This patch changes the logic of loop deletion: we make them top-level loops before we actually erase them. This allows us to trigger the simple branch of `erase` logic which just detatches blocks from the loop and does not try to do some complex stuff that need this invariant. Thanks to @uabelho for reporting this! Differential Revision: https://reviews.llvm.org/D57221 Reviewed By: fedor.sergeev llvm-svn: 353813		2019-02-12 09:37:00 +00:00
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AggressiveInstCombine	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Coroutines	[opaque pointer types] Pass value type to LoadInst creation.	2019-02-01 20:44:24 +00:00
Hello	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
IPO	[GlobalOpt] Simplify __cxa_atexit elimination	2019-02-09 09:18:37 +00:00
InstCombine	[InstCombine] Fix matchRotate bug when one operand is a ConstantExpr shift	2019-02-11 19:26:27 +00:00
Instrumentation	[InstrProf] Implement static profdata registration	2019-02-08 19:03:50 +00:00
ObjCARC	[opaque pointer types] Pass function type for CallBase::setCalledFunction.	2019-02-01 20:44:54 +00:00
Scalar	[LoopSimplifyCFG] Change logic of dead loops removal to avoid hitting asserts	2019-02-12 09:37:00 +00:00
Utils	[NFC] Rename DontDeleteUselessPHIs --> KeepOneInputPHIs	2019-02-12 07:09:29 +00:00
Vectorize	Refactor setAlreadyUnrolled() and setAlreadyVectorized().	2019-02-11 19:45:44 +00:00
CMakeLists.txt	Another try to commit 323321 (aggressive instruction combine).	2018-01-25 12:06:32 +00:00
LLVMBuild.txt	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00