Evan Cheng 0490dcb1b7 Add a smarter heuristic to determine when to coalesce a virtual register with a physical one. More specifically, it avoid tying a virtual register in the loop with a physical register defined / used outside the loop. When it determines it's not profitable, it will use the physical register as the allocation preference instead. ... This is *not* turned on by default. Testing indicates this is just as likely to pessimize code. The main issue seems to be allocation preference doesn't work effectively. That will change once I've taught register allocator "swapping". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70503 91177308-0d34-0410-b5e6-96231b3b80d8		2009-04-30 18:39:57 +00:00
..
Analysis	Don't try to mix integers and pointers in an icmp instruction	2009-04-30 16:40:30 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	testcase and asmparser fix for PR4066	2009-04-25 21:26:00 +00:00
Bitcode	Make a major API change to BitstreamReader: split all the reading	2009-04-26 20:59:02 +00:00
CodeGen	Add a smarter heuristic to determine when to coalesce a virtual register with a physical one. More specifically, it avoid tying a virtual register in the loop with a physical register defined / used outside the loop. When it determines it's not profitable, it will use the physical register as the allocation preference instead.	2009-04-30 18:39:57 +00:00
CompilerDriver	-write-graph now can be used with -o.	2009-03-27 12:57:14 +00:00
Debugger	Oops...I committed too much.	2009-03-13 04:39:26 +00:00
ExecutionEngine	Fix the JIT bindings for ocaml.	2009-04-30 00:43:39 +00:00
Linker	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
Support	Move helper functions for optimizing division by constant into the APInt	2009-04-30 10:15:35 +00:00
System	Fix choice of version of Windows callback to use to consider not only the Visual Studio version, but also the Windows SDK version.	2009-04-28 16:37:58 +00:00
Target	Set mayLoad on MOVZX32_NOREXrm8 too.	2009-04-30 03:11:48 +00:00
Transforms	Print correct instruction in dump.	2009-04-29 22:57:20 +00:00
VMCore	Any size of integral indices are allowed in gep for indexing into sequential types. Also adding a test case to check the indices type allowed into struct.	2009-04-26 17:14:35 +00:00
Makefile	Reorganize llvmc code.	2009-03-02 09:01:14 +00:00