Chandler Carruth 6bb093bbe7 [x86] Rewrite a core part of the new vector shuffle lowering to handle ... one pesky test case correctly. This test case caused the old code to infloop occilating between solving the low-half and the high-half. The 'side balancing' part of single-input v8 shuffle lowering didn't handle the one pattern which can cause it to occilate. Fortunately the fuzz testing found this case. Unfortuately it was *terrible* to handle. I'm really sorry for the amount and density of the code here, I'd love suggestions on how to simplify it. I feel like there *must* be a simpler form here, but after a lot of days I've not found it. This is the only one I've found that even works. I've added the one pesky test case along with some nice comments explaining the core problem that we have to solve here. So far this has survived approximately 32k test cases. More strenuous fuzzing commencing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215519 91177308-0d34-0410-b5e6-96231b3b80d8		2014-08-13 01:25:45 +00:00
..
Analysis
AsmParser
Bitcode
CodeGen	[PowerPC] Implement PPCTargetLowering::getTgtMemIntrinsic	2014-08-13 01:15:40 +00:00
DebugInfo
ExecutionEngine
IR	Don't upgrade global constructors when reading bitcode	2014-08-12 16:46:37 +00:00
IRReader
LineEditor
Linker	Don't upgrade global constructors when reading bitcode	2014-08-12 16:46:37 +00:00
LTO
MC
Object
Option
ProfileData
Support
TableGen
Target	[x86] Rewrite a core part of the new vector shuffle lowering to handle	2014-08-13 01:25:45 +00:00
Transforms	Allwo bitcast + struct GEP transform to work with addrspacecast	2014-08-12 19:46:13 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile