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llvm-mirror/lib/Target/X86/Utils
Chandler Carruth d2677fff24 [x86] Teach the vector comment parsing and printing to correctly handle
undef in the shuffle mask. This shows up when we're printing comments
during lowering and we still have an IR-level constant hanging around
that models undef.

A nice consequence of this is *much* prettier test cases where the undef
lanes actually show up as undef rather than as a particular set of
values. This also allows us to print shuffle comments in cases that use
undef such as the recently added variable VPERMILPS lowering. Now those
test cases have nice shuffle comments attached with their details.

The shuffle lowering for PSHUFB has been augmented to use undef, and the
shuffle combining has been augmented to comprehend it.

llvm-svn: 218301
2014-09-23 11:15:19 +00:00
..
CMakeLists.txt [CMake] Let add_public_tablegen_target responsible to provide dependency to CommonTableGen. 2013-11-28 17:04:04 +00:00
LLVMBuild.txt Update X86/Utils/LLVMBuild.txt corresponding to r213986. "Core" has been introduced. 2014-07-26 00:45:43 +00:00
Makefile
X86ShuffleDecode.cpp [x86] Teach the vector comment parsing and printing to correctly handle 2014-09-23 11:15:19 +00:00
X86ShuffleDecode.h [x86] Teach the vector comment parsing and printing to correctly handle 2014-09-23 11:15:19 +00:00