Matthew Simpson 14b16e7ee1 [SLP] Truncate expressions to minimum required bit width ... This change attempts to produce vectorized integer expressions in bit widths that are narrower than their scalar counterparts. The need for demotion arises especially on architectures in which the small integer types (e.g., i8 and i16) are not legal for scalar operations but can still be used in vectors. Like similar work done within the loop vectorizer, we rely on InstCombine to perform the actual type-shrinking. We use the DemandedBits analysis and ComputeNumSignBits from ValueTracking to determine the minimum required bit width of an expression. Differential revision: http://reviews.llvm.org/D15815 llvm-svn: 258404		2016-01-21 16:31:55 +00:00
..
BBVectorize.cpp	Vectorize: Remove implicit ilist iterator conversions, NFC	2015-10-19 22:06:09 +00:00
CMakeLists.txt	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
LLVMBuild.txt	Update libdeps since TLI was moved from Target to Analysis in r226078.	2015-01-15 05:21:00 +00:00
LoopVectorize.cpp	[LV] Avoid creating empty reduction entries (NFC)	2016-01-06 12:50:29 +00:00
Makefile
SLPVectorizer.cpp	[SLP] Truncate expressions to minimum required bit width	2016-01-21 16:31:55 +00:00
Vectorize.cpp	[PM] Remove the old 'PassManager.h' header file at the top level of	2015-02-13 10:01:29 +00:00