Evan Cheng c92da3882e There are times when the coalescer would not coalesce away a copy but the copy ... can be eliminated by the allocator is the destination and source targets the same register. The most common case is when the source and destination registers are in different class. For example, on x86 mov32to32_ targets GR32_ which contains a subset of the registers in GR32. The allocator can do 2 things: 1. Set the preferred allocation for the destination of a copy to that of its source. 2. After allocation is done, change the allocation of a copy destination (if legal) so the copy can be eliminated. This eliminates 443 extra moves from 403.gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43662 91177308-0d34-0410-b5e6-96231b3b80d8		2007-11-03 07:20:12 +00:00
..
ADT	When converting to integer, do bit manipulations in the destination	2007-11-01 22:43:37 +00:00
Analysis	VAArgInst does, in fact, read memory.	2007-11-02 04:01:21 +00:00
Assembly	More fleshing out of docs/Passes.html, plus some typo fixes and	2007-10-26 03:03:51 +00:00
Bitcode	Added overloaded version of Deserializer::ReadOwnedPtr which allows	2007-11-02 18:04:20 +00:00
CodeGen	There are times when the coalescer would not coalesce away a copy but the copy	2007-11-03 07:20:12 +00:00
Config	Regenerate.	2007-10-03 12:07:14 +00:00
Debugger	For PR797:	2006-08-22 16:06:27 +00:00
ExecutionEngine	add a mechanism for the JIT to invoke a function to lazily create functions as they are referenced.	2007-10-22 02:50:12 +00:00
Support	The guaranteed alignment of ptr+offset is only the minimum of	2007-10-28 12:59:45 +00:00
System	Fix minor doxygen nits.	2007-08-05 20:06:04 +00:00
Target	Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.	2007-11-01 20:53:16 +00:00
Transforms	Reg2Mem cleanup and optimizations:	2007-10-21 23:05:16 +00:00
AbstractTypeUser.h	Here is the bulk of the sanitizing.	2007-07-05 17:07:56 +00:00
Argument.h	make these accessors private.	2007-05-23 05:46:04 +00:00
AutoUpgrade.h	This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future.	2007-08-04 01:51:18 +00:00
BasicBlock.h	better portability for intptr_t.	2007-05-18 07:07:05 +00:00
CallGraphSCCPass.h	Add explicit keywords.	2007-07-02 14:53:37 +00:00
CallingConv.h	Fix 80 col violations.	2007-04-16 21:24:12 +00:00
Constant.h	add a Constant::getAllOnesValue helper function, which works on integers	2007-06-15 06:10:53 +00:00
Constants.h	Get rid of compilation warning during release builds	2007-11-01 08:24:40 +00:00
DerivedTypes.h	Updated VC++ build system.	2007-10-17 14:56:40 +00:00
Function.h	clarify precedence, no functionality change.	2007-08-20 21:31:08 +00:00
GlobalAlias.h	Implement review feedback	2007-04-29 18:02:48 +00:00
GlobalValue.h	Change casts from old style to new style. This helps document the details	2007-08-12 08:12:35 +00:00
GlobalVariable.h	Implement review feedback. Aliasees can be either GlobalValue's or	2007-04-28 13:45:00 +00:00
InlineAsm.h	represent indirect operands explicitly in inline asm strings.	2007-04-28 01:02:58 +00:00
InstrTypes.h	Updated VC++ build system.	2007-10-17 14:56:40 +00:00
Instruction.def	Changes to support making the shift instructions be true BinaryOperators.	2007-02-02 02:16:23 +00:00
Instruction.h	Instruction:: Next/Prev accessors are now private	2007-04-17 18:03:55 +00:00
Instructions.h	Updated VC++ build system.	2007-10-17 14:56:40 +00:00
IntrinsicInst.h	For PR950:	2006-10-20 07:07:24 +00:00
Intrinsics.h	For PR1297:	2007-04-01 07:26:35 +00:00
Intrinsics.td	Model stacksave and stackrestore as both writing memory, since we	2007-10-29 05:47:52 +00:00
IntrinsicsPowerPC.td	Convert the intrinsic function definitions to use llvm_i32_ty instead of	2006-12-31 22:24:55 +00:00
IntrinsicsX86.td	Add missing SSE builtins: CVTPD2PI, CVTPS2PI,	2007-10-30 22:15:38 +00:00
LinkAllPasses.h	Remove RLE from the headers, since the pass itself is gone now.	2007-09-14 22:54:46 +00:00
LinkAllVMCore.h	For PR780:	2006-07-26 16:55:39 +00:00
Linker.h	Fix minor doxygen nits.	2007-08-05 20:06:04 +00:00
LinkTimeOptimizer.h	Add printVersion(). Linker can use it to print LLVM version number.	2007-02-01 01:46:06 +00:00
Module.h	Fixing an comment in Module.h that refers to a nonexistent parameter.	2007-09-18 02:09:34 +00:00
ModuleProvider.h	add a hook to demat functions.	2007-03-29 18:30:26 +00:00
ParameterAttributes.h	Support for trampolines, except for X86 codegen which is	2007-07-27 12:58:54 +00:00
Pass.h	Allow passes to just pass up "FunctionPass(&ID)" instead of "FunctionPass((intptr_t)&ID)"	2007-10-08 03:45:44 +00:00
PassAnalysisSupport.h	Add a addRequiredTransitiveID member function, which is to	2007-05-14 14:21:46 +00:00
PassManager.h	remove unimplemented ctor, add some comments.	2007-10-25 05:19:24 +00:00
PassManagers.h	Fix a using namespace llvm; in a header file.	2007-10-03 19:04:09 +00:00
PassSupport.h	update comment.	2007-10-18 16:10:17 +00:00
SymbolTableListTraits.h	Change casts from old style to new style. This helps document the details	2007-08-12 08:12:35 +00:00
Type.h	Fix spelling.	2007-09-25 13:53:22 +00:00
TypeSymbolTable.h	Properly initialize value :)	2007-07-19 15:32:47 +00:00
Use.h	Add a new use_iterator::atEnd() method, which allows us to shrink	2007-10-11 04:18:11 +00:00
User.h	Switch ValueSymbolTable to use StringMap<Value*> instead of std::map<std::string, Value*>	2007-02-12 05:18:08 +00:00
Value.h	add Value::getNameStart/getNameLen() accessors.	2007-08-10 15:34:35 +00:00
ValueSymbolTable.h	better portability for intptr_t.	2007-05-18 07:07:05 +00:00