Hal Finkel 72465ea23d BBVectorize: Choose pair ordering to minimize shuffles ... BBVectorize would, except for loads and stores, always fuse instructions so that the first instruction (in the current source order) would always represent the low part of the input vectors and the second instruction would always represent the high part. This lead to too many shuffles being produced because sometimes the opposite order produces fewer of them. With this change, BBVectorize tracks the kind of pair connections that form the DAG of candidate pairs, and uses that information to reorder the pairs to avoid excess shuffles. Using this information, a future commit will be able to add VTTI-based shuffle costs to the pair selection procedure. Importantly, the number of remaining shuffles can now be estimated during pair selection. There are some trivial instruction reorderings in the test cases, and one simple additional test where we certainly want to do a reordering to avoid an unnecessary shuffle. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167122 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-31 15:17:07 +00:00
..
Analysis	Remove LoopDependenceAnalysis.	2012-10-26 20:25:01 +00:00
Archive
Assembler	Don't crash if a .ll file contains a forward-reference that looks like a global	2012-10-11 00:38:25 +00:00
Bindings/Ocaml	Move TargetData to DataLayout.	2012-10-08 16:39:34 +00:00
Bitcode	Change encoding of instruction operands in bitcode binaries to be relative	2012-10-11 20:20:40 +00:00
BugPoint	Fix unexpected passes. These test do work with LTO on linux. I tested both	2012-10-26 02:19:02 +00:00
CodeGen	Implement ADJCALLSTACKUP and ADJCALLSTACKDOWN	2012-10-31 05:21:10 +00:00
DebugInfo	Make sure to generate the right kind of MDNode for enum forward declarations.	2012-10-05 01:49:14 +00:00
ExecutionEngine	Align the data section correctly when loading an ELF file.	2012-10-29 10:47:07 +00:00
Feature	Change ForceSizeOpt attribute into MinSize attribute	2012-10-30 16:32:52 +00:00
Instrumentation	[asan] make sure asan erases old unused allocas after it created a new one. This became important after the recent move from ModulePass to FunctionPass because no cleanup is happening after asan pass any more.	2012-10-19 06:20:53 +00:00
Integer
Linker
MC	ARM: Better disassembly for pc-relative LDR.	2012-10-30 01:04:51 +00:00
Object	Fix SymbolRef::getAddress implementation for ELF. The 'value' field in symbol table entry should be treated differently for relocatable and relocated files. This patch fixes symbol addresses printed by llvm-nm for executables and shared objects.	2012-09-21 07:08:08 +00:00
Other	Add -alias and -ralias options to match what we have for functions and	2012-10-29 02:23:07 +00:00
Scripts
TableGen	Re-work bit/bits value resolving in tblgen	2012-09-06 23:32:48 +00:00
Transforms	BBVectorize: Choose pair ordering to minimize shuffles	2012-10-31 15:17:07 +00:00
Unit
Verifier	Assert that dominates is not given a multiple edge. Finding out if we have	2012-08-17 18:21:28 +00:00
YAMLParser
CMakeLists.txt	Add dependency on llvm-bcanalyzer from tests to the CMake build.	2012-10-15 21:11:46 +00:00
lit.cfg	Set %defaultjit to use MCJIT for PowerPC targets.	2012-10-30 18:07:58 +00:00
lit.site.cfg.in	test: Add a lit config variable to check if LTO is enabled.	2012-10-18 20:43:11 +00:00
Makefile	test: Add a lit config variable to check if LTO is enabled.	2012-10-18 20:43:11 +00:00
Makefile.tests
TestRunner.sh