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
..
Analysis	Revert "[ValueTracking] Understand more select patterns in ComputeKnownBits"	2016-01-14 15:49:32 +00:00
Assembler	Fix constant folding of constant vector GEPs with undef or null as pointer argument.	2016-01-19 16:34:31 +00:00
Bindings	Deprecate a few C APIs.	2015-12-18 23:46:42 +00:00
Bitcode	[WinEH] Verify unwind edges against EH pad tree	2016-01-10 04:28:38 +00:00
BugPoint
CodeGen	AVX512: Masked move intrinsic implementation.	2016-01-21 14:18:11 +00:00
DebugInfo	Write AArch64 big endian data fixup entries as BE.	2016-01-20 15:59:14 +00:00
Examples
ExecutionEngine	[JIT] Add small-code model test for ELF.	2016-01-18 21:14:12 +00:00
Feature	MachineScheduler: Honor optnone functions in the pre-ra scheduler.	2016-01-20 22:38:25 +00:00
FileCheck
Instrumentation	[sanitizer] [msan] Fix origin store of array types	2016-01-11 19:55:27 +00:00
Integer
JitListener	Fix several accidental DOS line endings in source files	2016-01-03 17:22:03 +00:00
LibDriver
Linker	Revert obsolete llvm-link -preserve-modules option/test	2016-01-21 14:28:52 +00:00
LTO	[LTO] Restore original linkage of externals prior to splitting	2016-01-18 23:24:54 +00:00
MC	[mips] Allowed dla instructions on 32-bit architectures.	2016-01-21 15:11:01 +00:00
Object	[llvm-readobj][ELF] Teach llvm-readobj to show arch specific ELF section's flags	2016-01-20 19:15:18 +00:00
Other	Recommit r256952 "Filtering IR printing for print-after-all/print-before-all"	2016-01-06 22:55:03 +00:00
SymbolRewriter
TableGen	[GlobalISel] Add a generic machine opcode for ADD.	2016-01-20 19:14:55 +00:00
tools	re-submit test case (withright format-version)	2016-01-21 02:35:59 +00:00
Transforms	[SLP] Truncate expressions to minimum required bit width	2016-01-21 16:31:55 +00:00
Unit
Verifier	Add a "gc-transition" operand bundle	2016-01-20 19:50:25 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.cfg	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.site.cfg.in	Make WinCOFFObjectWriter.cpp's timestamp writing not use ENABLE_TIMESTAMPS	2016-01-06 19:05:19 +00:00
Makefile	check-llvm: Tweak the feature "timestamps" for autoconf.	2015-12-21 08:46:12 +00:00
Makefile.tests
TestRunner.sh