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Juergen Ributzka 4a76317ebb [FastISel] Undo phi node updates when falling-back to SelectionDAG. 
The included test case would fail, because the MI PHI node would have two
operands from the same predecessor.

This problem occurs when a switch instruction couldn't be selected. This happens
always, because there is no default switch support for FastISel to begin with.

The problem was that FastISel would first add the operand to the PHI nodes and
then fall-back to SelectionDAG, which would then in turn add the same operands
to the PHI nodes again.

This fix removes these duplicate PHI node operands by reseting the
PHINodesToUpdate to its original state before FastISel tried to select the
instruction.

This fixes <rdar://problem/18155224>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216640 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-28 02:06:55 +00:00
..
ADT Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or just letting them be implicitly created. 2014-08-27 05:25:25 +00:00
Analysis Revert "Analysis: unique_ptr-ify DependenceAnalysis::collectCoeffInfo" 2014-08-26 02:03:38 +00:00
AsmParser Pass a MemoryBufferRef when we can avoid taking ownership. 2014-08-26 21:49:01 +00:00
Bitcode Pass a std::unique_ptr<MemoryBuffer>& to getLazyBitcodeModule. 2014-08-26 22:00:09 +00:00
CodeGen [FastISel] Undo phi node updates when falling-back to SelectionDAG. 2014-08-28 02:06:55 +00:00
Config Regenerate autoconf, previous updates to the configury haven't 2014-07-28 22:00:44 +00:00
DebugInfo Use a reference instead of a pointer. 2014-07-31 20:19:36 +00:00
ExecutionEngine Return a std::unique_ptr when creating a new MemoryBuffer. 2014-08-27 20:03:13 +00:00
IR Reland r216439 215441, majnemer has a real fix for PR20771. 2014-08-27 20:06:19 +00:00
IRReader Pass a MemoryBufferRef when we can avoid taking ownership. 2014-08-26 21:49:01 +00:00
LineEditor [C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API. 2014-04-21 09:34:48 +00:00
Linker IR: Add COMDATs to the IR 2014-06-27 18:19:56 +00:00
LTO Fix some cases were ArrayRefs were being passed by reference. Also remove 'const' from some other ArrayRef uses since its implicitly const already. 2014-08-27 05:25:00 +00:00
MC Convert MC command line option for fatal assembler warnings into a 2014-08-26 18:39:50 +00:00
Object Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or just letting them be implicitly created. 2014-08-27 05:25:25 +00:00
Option Option: Propagate flags from groups to options in each group 2014-07-12 00:18:58 +00:00
ProfileData Coverage Mapping: add function's hash to coverage function records. 2014-08-21 19:23:25 +00:00
Support Fix unaligned reads/writes in X86JIT and RuntimeDyldELF. 2014-08-27 23:06:08 +00:00
TableGen TableGen: unique_ptr-ify RecordKeeper 2014-08-24 19:10:57 +00:00
Target name change: isPow2DivCheap -> isPow2SDivCheap 2014-08-21 22:31:48 +00:00
Transforms Move some logic to populateLTOPassManager. 2014-08-21 20:03:44 +00:00
CMakeLists.txt Remove llvm_headers_do_not_build for the benefit of XCode and Visual Studio users. 2014-08-14 00:51:47 +00:00
InitializePasses.h Rename AtomicExpandLoadLinked into AtomicExpand 2014-08-21 21:50:01 +00:00
LinkAllIR.h [cleanup] Move the Dominators.h and Verifier.h headers into the IR 2014-01-13 09:26:24 +00:00
LinkAllPasses.h Move -verify-use-list-order into llvm-uselistorder 2014-07-25 17:13:03 +00:00
module.modulemap [modules] Update module map workaround to cope with the problematic file having 2014-08-07 20:27:08 +00:00
module.modulemap.build [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
Pass.h Revert "[PM] Add pass run listeners to the pass manager." 2014-05-15 17:49:20 +00:00
PassAnalysisSupport.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
PassInfo.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassManager.h Move the old pass manager infrastructure into a legacy namespace and 2013-11-09 12:26:54 +00:00
PassRegistry.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassSupport.h Move GlobalMerge from Transform to CodeGen. 2014-06-13 22:57:59 +00:00