Dan Gohman a6e5948fce Don't create ISD::FNEG nodes after legalize if they aren't legal. ... Simplify x+0 to x in unsafe-fp-math mode. This avoids a bunch of redundant work in many cases, because in unsafe-fp-math mode, ISD::FADD with a constant is considered free to negate, so the DAGCombiner often negates x+0 to -0-x thinking it's free, when in reality the end result is -x, which is more expensive than x. Also, combine x*0 to 0. This fixes PR3374. llvm-svn: 62789		2009-01-22 21:58:43 +00:00
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Analysis	introduce a useful abstraction to find out if a Use is in the call position of an instruction	2009-01-22 21:35:57 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	Add the private linkage.	2009-01-15 20:18:42 +00:00
Bitcode	use specialized accessor instead of plain getOperand(0)	2009-01-16 18:40:27 +00:00
CodeGen	Don't create ISD::FNEG nodes after legalize if they aren't legal.	2009-01-22 21:58:43 +00:00
Debugger	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
ExecutionEngine	Revert r62553 and r62616 due to issues with portability.	2009-01-22 20:09:20 +00:00
Linker	Add the private linkage.	2009-01-15 20:18:42 +00:00
Support	Do not use host floating point types when emitting	2009-01-21 20:32:55 +00:00
System	rename methods in System/Host to be more consistent.	2009-01-22 19:53:00 +00:00
Target	Add SelectionDAG::getNOT method to construct bitwise NOT operations,	2009-01-22 17:39:32 +00:00
Transforms	introduce a useful abstraction to find out if a Use is in the call position of an instruction	2009-01-22 21:35:57 +00:00
VMCore	Do not use host floating point types when emitting	2009-01-21 20:32:55 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00