Chandler Carruth 72c3b07dfd [x86] Fix terrible bugs everywhere in the new vector shuffle lowering ... and in the target shuffle combining when trying to widen vector elements. Previously only one of these was correct, and we didn't correctly propagate zeroing target shuffle masks (which have a different sentinel value from undef in non- target shuffle masks now). This isn't just a missed optimization, this caused us to drop zeroing shuffles on the floor and miscompile code. The added test case is one example of that. There are other fixes to the test suite as a consequence of this as well as restoring the undef elements in some of the masks that were lost when I brought sanity to the actual *value* of the undef and zero sentinels. I've also just cleaned up some of the PSHUFD and PSHUFLW and PSHUFHW combining code, but that code really needs to go. It was a nice initial attempt, but it isn't very principled and the recursive shuffle combiner is much more powerful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218562 91177308-0d34-0410-b5e6-96231b3b80d8		2014-09-27 04:42:44 +00:00
..
Analysis	Ignore annotation function calls in cost computation	2014-09-26 17:48:40 +00:00
AsmParser	Make CallingConv::ID an alias of "unsigned".	2014-09-10 18:00:17 +00:00
Bitcode	Do not destroy external linkage when deleting function body	2014-09-23 12:54:19 +00:00
CodeGen	Refactor reciprocal and reciprocal square root estimate into target-independent functions (part 2).	2014-09-26 23:01:47 +00:00
DebugInfo	Object: BSS/virtual sections don't have contents	2014-09-26 22:32:16 +00:00
ExecutionEngine	[MCJIT] Fix some more RuntimeDyld debugging output format specifiers.	2014-09-23 19:20:57 +00:00
IR	DIBuilder: Delete dead code, NFC	2014-09-19 23:17:58 +00:00
IRReader	Pass a && to getLazyBitcodeModule.	2014-09-03 17:31:46 +00:00
LineEditor
Linker	Merge alignment of common GlobalValue.	2014-09-09 17:48:18 +00:00
LTO	LTO: introduce object file-based on-disk module format.	2014-09-18 21:28:49 +00:00
MC	MC: Use @IMGREL instead of @IMGREL32, which we can't parse	2014-09-25 02:09:18 +00:00
Object	Object: BSS/virtual sections don't have contents	2014-09-26 22:32:16 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	llvm-cov: Combine segments that cover the same location	2014-09-25 00:34:18 +00:00
Support	clang-format of ChangeStdinToBinary & ChangeStdoutToBinary.	2014-09-26 22:27:11 +00:00
TableGen	Refactoring: raw pointer -> unique_ptr	2014-09-25 19:55:58 +00:00
Target	[x86] Fix terrible bugs everywhere in the new vector shuffle lowering	2014-09-27 04:42:44 +00:00
Transforms	[IndVar] Don't widen loop compare unless IV user is sign extended.	2014-09-26 20:05:35 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile