Alkis Evlogimenos 39a0d5c112 Too many changes in one commit: ... 1. LiveIntervals now implement a 4 slot per instruction model. Load, Use, Def and a Store slot. This is required in order to correctly represent caller saved register clobbering on function calls, register reuse in the same instruction (def resues last use) and also spill code added later by the allocator. The previous representation (2 slots per instruction) was insufficient and as a result was causing subtle bugs. 2. Fixes in spill code generation. This was the major cause of failures in the test suite. 3. Linear scan now has core support for folding memory operands. This is untested and not enabled (the live interval update function does not attempt to fold loads/stores in instructions). 4. Lots of improvements in the debugging output of both live intervals and linear scan. Give it a try... it is beautiful :-) In summary the above fixes all the issues with the recent reserved register elimination changes and get the allocator very close to the next big step: folding memory operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11654 91177308-0d34-0410-b5e6-96231b3b80d8		2004-02-20 06:15:40 +00:00
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Analysis	When we complete the bottom-up pass, make sure to merge the globals in 'main' into	2004-02-17 19:06:47 +00:00
Archive	* finegrainify namespacification of ArchiveReader.cpp	2004-01-10 19:00:15 +00:00
AsmParser	It turns out that the two dimensional vectors were causing big slowdowns	2004-02-09 21:03:38 +00:00
Bytecode	Adjustments to support the new ConstantAggregateZero class	2004-02-15 05:55:15 +00:00
CodeGen	Too many changes in one commit:	2004-02-20 06:15:40 +00:00
Debugger	"fix" a nasty race condition	2004-01-14 21:18:03 +00:00
ExecutionEngine	Make the JIT zero out globals with memset instead of an element at a time. This	2004-02-15 05:54:06 +00:00
Linker	Fix PR245: Linking weak and strong global variables is dependent on link order	2004-02-17 21:56:04 +00:00
Support	Disable the stack trace thing until we can get an autoconf test for it. This	2004-02-19 21:21:23 +00:00
Target	It is totally unacceptable to print out (literally) millions of zeros when	2004-02-20 05:49:22 +00:00
Transforms	Fix PR245: Linking weak and strong global variables is dependent on link order	2004-02-17 21:56:04 +00:00
VMCore	Fix PR245: Linking weak and strong global variables is dependent on link order	2004-02-17 21:56:04 +00:00
Makefile	CBackend is no longer here	2004-02-13 23:29:37 +00:00