Chris Lattner a958cbfe36 Disable folding sext(trunc(x)) -> x (and other similar cast/cast cases) when the ... trunc has multiple uses. Codegen is not able to coalesce the subreg case correctly and so this leads to higher register pressure and spilling (see PR5997). This speeds up 256.bzip2 from 8.60 -> 8.04s on my machine, ~7%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93200 91177308-0d34-0410-b5e6-96231b3b80d8		2010-01-11 22:45:25 +00:00
..
CMakeLists.txt	split and/or/xor out into one overly-large (2000LOC) file. However, I think	2010-01-05 07:50:36 +00:00
InstCombine.h	inline and remove the rest of commonIntCastTransforms.	2010-01-10 01:00:46 +00:00
InstCombineAddSub.cpp	reduce indentation	2010-01-05 20:56:24 +00:00
InstCombineAndOrXor.cpp	add one more bitfield optimization, allowing clang to generate	2010-01-11 06:55:24 +00:00
InstCombineCalls.cpp	Remove unnecessary dyn_cast and add a comment. Part of a WIP.	2010-01-08 21:37:11 +00:00
InstCombineCasts.cpp	Disable folding sext(trunc(x)) -> x (and other similar cast/cast cases) when the	2010-01-11 22:45:25 +00:00
InstCombineCompares.cpp	tidy up some stuff duncan pointed out.	2010-01-08 17:48:19 +00:00
InstCombineLoadStoreAlloca.cpp	split out load/store/alloca.	2010-01-05 05:57:49 +00:00
InstCombineMulDivRem.cpp	Convert a ton of simple integer type equality tests to the new predicate.	2010-01-05 20:07:06 +00:00
InstCombinePHI.cpp	Add newline at EOF.	2010-01-05 13:32:48 +00:00
InstCombineSelect.cpp	Convert a ton of simple integer type equality tests to the new predicate.	2010-01-05 20:07:06 +00:00
InstCombineShifts.cpp	change the preferred canonical form for a sign extension to be	2010-01-10 07:08:30 +00:00
InstCombineSimplifyDemanded.cpp	move the 'SimplifyDemandedFoo' methods out to their own file, cutting 1K lines out of instcombine.cpp	2010-01-04 07:17:19 +00:00
InstCombineVectorOps.cpp	reduce indentation	2010-01-05 05:42:08 +00:00
InstCombineWorklist.h	remove a ton of unneeded LLVMContext stuff.	2010-01-04 07:02:48 +00:00
InstructionCombining.cpp	teach ComputeNumSignBits to look through PHI nodes.	2010-01-07 23:44:37 +00:00
Makefile