Chris Lattner ff89aeda21 Improve ValueAlreadyLiveAtInst with a cheap and dirty, but effective ... heuristic: the value is already live at the new memory operation if it is used by some other instruction in the memop's block. This is cheap and simple to compute (moreso than full liveness). This improves the new heuristic even more. For example, it cuts two out of three new instructions out of 255.vortex:DbmFileInGrpHdr, which is one of the functions that the heuristic regressed. This overall eliminates another 40 instructions from 403.gcc and visibly reduces register pressure in 255.vortex (though this only actually ends up saving the 2 instructions from the whole program). llvm-svn: 60084		2008-11-26 03:20:37 +00:00
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Analysis	Seriously strengthen the guarantee offered by noalias on a function's return	2008-11-24 05:00:44 +00:00
Archive	Silence unused variable warnings.	2008-11-21 20:00:59 +00:00
AsmParser	Extend the 'noalias' attribute to function return values. This is intended to	2008-11-24 03:41:24 +00:00
Bitcode	Added support for the following definition of shufflevector	2008-11-10 04:46:22 +00:00
CodeGen	A simplification for checking whether the signs of the operands and sum differ. Thanks, Duncan.	2008-11-25 19:40:17 +00:00
Debugger	Initial support for the CMake build system.	2008-09-22 01:08:49 +00:00
ExecutionEngine	Make JIT::runFunction handle functions with non-C calling conventions.	2008-11-23 08:00:11 +00:00
Linker	Make comments and code for QuietWarnings and QuietErrors	2008-10-25 17:57:20 +00:00
Support	Revert r60042. IndVarSimplify should check if APFloat is PPCDoubleDouble first before trying to convert it to an integer.	2008-11-26 01:11:57 +00:00
System	ARM / Mac OS X also wants to invalidate icache after jitting.	2008-11-14 02:33:17 +00:00
Target	__fastcall and __stdcall are mingw extensions to gcc for windows. Use the	2008-11-26 03:17:27 +00:00
Transforms	Improve ValueAlreadyLiveAtInst with a cheap and dirty, but effective	2008-11-26 03:20:37 +00:00
VMCore	add a long-overdue AllocaInst::isStaticAlloca method.	2008-11-26 02:54:17 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00