Hal Finkel ab90084bca BBVectorize: Cap the number of candidate pairs in each instruction group ... For some basic blocks, it is possible to generate many candidate pairs for relatively few pairable instructions. When many (tens of thousands) of these pairs are generated for a single instruction group, the time taken to generate and rank the different vectorization plans can become quite large. As a result, we now cap the number of candidate pairs within each instruction group. This is done by closing out the group once the threshold is reached (set now at 3000 pairs). Although this will limit the overall compile-time impact, this may not be the best way to achieve this result. It might be better, for example, to prune excessive candidate pairs after the fact the prevent the generation of short, but highly-connected groups. We can experiment with this in the future. This change reduces the overall compile-time slowdown of the csa.ll test case in PR15222 to ~5x. If 5x is still considered too large, a lower limit can be used as the default. This represents a functionality change, but only for very large inputs (thus, there is no regression test). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175251 91177308-0d34-0410-b5e6-96231b3b80d8		2013-02-15 04:28:42 +00:00
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Analysis	Teach the DataLayout aware constant folder to be much more aggressive towards	2013-02-14 03:23:37 +00:00
Archive	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
AsmParser	Update comment.	2013-02-14 20:44:07 +00:00
Bitcode	Have the bitcode writer and reader handle the new attribute references.	2013-02-12 08:13:50 +00:00
CodeGen	Dont merge consecutive loads/stores into vectors when noimplicitfloat is used.	2013-02-14 18:28:52 +00:00
DebugInfo	Add support for the pubnames section to llvm-dwarfdump.	2013-02-12 16:20:28 +00:00
ExecutionEngine	[patch] bug 15055 Add Unistd.h to OProfileWrapper.cpp	2013-02-07 20:43:33 +00:00
IR	Revert "Simplify the attributes '<' comparison function."	2013-02-15 04:15:55 +00:00
Linker	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
MC	Revert r15266. This fixes llvm.org/pr15266.	2013-02-14 16:23:08 +00:00
Object	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
Option	Resort the #include lines in include/... and lib/... with the	2013-01-02 10:22:59 +00:00
Support	Workaround an MSan false positive.	2013-02-14 12:18:32 +00:00
TableGen	tblgen: Diagnose duplicate includes.	2013-02-07 04:30:39 +00:00
Target	Fix minor mips16 issues in directives for function prologue. Probably this does	2013-02-15 01:04:38 +00:00
Transforms	BBVectorize: Cap the number of candidate pairs in each instruction group	2013-02-15 04:28:42 +00:00
CMakeLists.txt	Rename VMCore directory to IR.	2013-01-02 09:10:48 +00:00
LLVMBuild.txt	Rename VMCore directory to IR.	2013-01-02 09:10:48 +00:00
Makefile	Rename VMCore directory to IR.	2013-01-02 09:10:48 +00:00