Chris Lattner fd3f635103 Fix rdar://9289512 - not folding load into compare at -O0 ... The basic issue here is that bottom-up isel is matching the branch and compare, and was failing to fold the load into the branch/compare combo. Fixing this (by allowing folding into any instruction of a sequence that is selected) allows us to produce things like: cmpb $0, 52(%rax) je LBB4_2 instead of: movb 52(%rax), %cl cmpb $0, %cl je LBB4_2 This makes the generated -O0 code run a bit faster, but also speeds up compile time by putting less pressure on the register allocator and generating less code. This was one of the biggest classes of missing load folding. Implementing this shrinks 176.gcc's c-decl.s (as a random example) by about 4% in (verbose-asm) line count. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129656 91177308-0d34-0410-b5e6-96231b3b80d8		2011-04-17 06:35:44 +00:00
..
CMakeLists.txt
DAGCombiner.cpp	PR9055: extend the fix to PR4050 (r70179) to apply to zext and anyext.	2011-04-16 23:25:34 +00:00
FastISel.cpp	fix rdar://9289583 - fast isel should handle non-canonical commutative binops	2011-04-17 01:16:47 +00:00
FunctionLoweringInfo.cpp	There are times when the landing pad won't have a call to 'eh.selector' in	2011-03-03 23:14:05 +00:00
InstrEmitter.cpp	Simplify a bunch of isVirtualRegister() and isPhysicalRegister() logic.	2011-01-10 02:58:51 +00:00
InstrEmitter.h
LegalizeDAG.cpp	Fix divmod libcall lowering. Convert to {S|U}DIVREM first and then expand the node to a libcall. rdar://9280991	2011-04-16 03:08:26 +00:00
LegalizeFloatTypes.cpp	Allow targets to specify a the type of the RHS of a shift parameterized on the type of the LHS.	2011-02-25 21:41:48 +00:00
LegalizeIntegerTypes.cpp	Revert commit 126684 "Use the correct shift amount type". It is only the correct	2011-03-04 14:28:59 +00:00
LegalizeTypes.cpp	Move ExpandAtomic into the integer expansion routines - it's only used there.	2011-01-11 00:36:08 +00:00
LegalizeTypes.h	PR9535: add support for splitting and scalarizing vector ISD::FP_ROUND.	2011-03-23 22:18:48 +00:00
LegalizeTypesGeneric.cpp
LegalizeVectorOps.cpp	Add support for legalizing UINT_TO_FP of vectors on platforms which do	2011-03-19 13:09:10 +00:00
LegalizeVectorTypes.cpp	PR9535: add support for splitting and scalarizing vector ISD::FP_ROUND.	2011-03-23 22:18:48 +00:00
Makefile
ScheduleDAGFast.cpp	Re-commit 127368 and 127371. They are exonerated.	2011-03-10 00:16:32 +00:00
ScheduleDAGList.cpp	Various bits of framework needed for precise machine-level selection	2010-12-24 05:03:26 +00:00
ScheduleDAGRRList.cpp	In the pre-RA scheduler, maintain cmp+br proximity.	2011-04-14 05:15:06 +00:00
ScheduleDAGSDNodes.cpp	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
ScheduleDAGSDNodes.h	Added a check in the preRA scheduler for potential interference on a	2011-04-07 19:54:57 +00:00
SDNodeDbgValue.h	Do not lose debug info of an inlined function argument even if the argument is only used through GEPs.	2011-02-18 22:43:42 +00:00
SDNodeOrdering.h
SelectionDAG.cpp	sext(undef) = 0, because the top bits will all be the same.	2011-03-15 02:22:10 +00:00
SelectionDAGBuilder.cpp	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
SelectionDAGBuilder.h	Turn SelectionDAGBuilder::GetRegistersForValue into a local function.	2011-03-26 16:35:10 +00:00
SelectionDAGISel.cpp	Fix rdar://9289512 - not folding load into compare at -O0	2011-04-17 06:35:44 +00:00
SelectionDAGPrinter.cpp	Pass the graph to the DOTGraphTraits.getEdgeAttributes().	2011-02-27 04:11:03 +00:00
TargetLowering.cpp	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
TargetSelectionDAGInfo.cpp