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Bjorn Pettersson d804bd17de [LoopUnroll] Handle certain PHIs in full unrolling properly 
Summary:
When reconstructing the CFG of the loop after unrolling,
LoopUnroll could in some cases remove the phi operands of
loop-carried values instead of preserving them, resulting
in undef phi values after loop unrolling.

When doing this reconstruction, avoid removing incoming
phi values for phis in the successor blocks if the successor
is the block we are jumping to anyway.

Patch-by: ebevhan

Reviewers: fhahn, efriedma

Reviewed By: fhahn

Subscribers: bjope, lebedev.ri, zzheng, dmgreen, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66334

llvm-svn: 369886
 		2019-08-26 09:29:53 +00:00
..
Analysis [TLI] Simplify code. NFCI. 2019-08-24 17:30:12 +00:00
AsmParser [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
BinaryFormat [BinaryFormat] Teach identify_magic about Tapi files. 2019-08-21 21:00:16 +00:00
Bitcode Do a sweep of symbol internalization. NFC. 2019-08-23 19:59:23 +00:00
Bitstream [Bitcode] Move Bitstream to a separate library 2019-07-03 22:40:07 +00:00
CodeGen [X86][DAGCombiner] Teach narrowShuffle to use concat_vectors instead of inserting into undef 2019-08-25 17:59:49 +00:00
DebugInfo Removing block comments from CodeView records in assembly files & related code cleanup 2019-08-25 01:09:11 +00:00
Demangle llvm-undname: Correctly demangle vararg parameters 2019-06-04 19:10:08 +00:00
ExecutionEngine [ORC] Remove query dependencies when symbols are resolved. 2019-08-23 20:37:32 +00:00
FuzzMutate [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
Fuzzer
…
IR [Constant] Add 'isElementWiseEqual()' method 2019-08-24 06:49:51 +00:00
IRReader [IRReader] Expose getLazyIRModule 2019-02-11 22:01:13 +00:00
LTO Do a sweep of symbol internalization. NFC. 2019-08-23 19:59:23 +00:00
LineEditor [CMake] Delete redundant DEPENDS/LINK_LIBS from LineEditor/XRay 2019-06-22 01:50:21 +00:00
Linker Linker: Add support for GlobalIFunc. 2019-08-08 22:09:18 +00:00
MC [PowerPC][AIX] Adds support for writing the .data section in assembly files 2019-08-25 15:17:25 +00:00
MCA [MCA] consistently use MCPhysReg instead of unsigned as register type. NFCI 2019-08-22 13:32:17 +00:00
Object [Object] FIX: update PlatformKind name in TapiFile 2019-08-21 23:57:57 +00:00
ObjectYAML [yaml2obj] - Allow setting the symbol st_other field to any integer. 2019-08-23 09:31:07 +00:00
Option [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
Passes [LoopPassManager + MemorySSA] Only enable use of MemorySSA for LPMs known to preserve it. 2019-08-21 17:00:57 +00:00
ProfileData [SampleFDO] Add ExtBinary format to support extension of binary profile. 2019-08-23 19:05:30 +00:00
Remarks Do a sweep of symbol internalization. NFC. 2019-08-23 19:59:23 +00:00
Support Do a sweep of symbol internalization. NFC. 2019-08-23 19:59:23 +00:00
TableGen [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
Target [X86][DAGCombiner] Teach narrowShuffle to use concat_vectors instead of inserting into undef 2019-08-25 17:59:49 +00:00
Testing [Testing] Move clangd::Annotations to llvm testing support 2019-04-25 10:08:31 +00:00
TextAPI [TextAPI] Update reader to be supported by lib/Object 2019-08-16 15:30:48 +00:00
ToolDrivers [llvm-dlltool] Make sure to strip decorations from ExtName for renamed exports 2019-08-23 11:18:11 +00:00
Transforms [LoopUnroll] Handle certain PHIs in full unrolling properly 2019-08-26 09:29:53 +00:00
WindowsManifest Fight a bit against global initializers. NFC. 2019-08-22 19:43:27 +00:00
XRay [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
CMakeLists.txt Fix build errors LLVM tests are disabled. 2019-07-11 22:08:35 +00:00
LLVMBuild.txt [Bitcode] Move Bitstream to a separate library 2019-07-03 22:40:07 +00:00