Chris Lattner d1980a5acd Move 3 "(add (select cc, 0, c), x) -> (select cc, x, (add, x, c))" ... related transformations out of target-specific dag combine into the ARM backend. These were added by Evan in r37685 with no testcases and only seems to help ARM (e.g. test/CodeGen/ARM/select_xform.ll). Add some simple X86-specific (for now) DAG combines that turn things like cond ? 8 : 0 -> (zext(cond) << 3). This happens frequently with the recently added cp constant select optimization, but is a very general xform. For example, we now compile the second example in const-select.ll to: _test: movsd LCPI2_0, %xmm0 ucomisd 8(%esp), %xmm0 seta %al movzbl %al, %eax movl 4(%esp), %ecx movsbl (%ecx,%eax,4), %eax ret instead of: _test: movl 4(%esp), %eax leal 4(%eax), %ecx movsd LCPI2_0, %xmm0 ucomisd 8(%esp), %xmm0 cmovbe %eax, %ecx movsbl (%ecx), %eax ret This passes multisource and dejagnu. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66779 91177308-0d34-0410-b5e6-96231b3b80d8		2009-03-12 06:52:53 +00:00
..
CallingConvLower.cpp	Add "inreg" field to CallSDNode (doesn't increase	2008-09-26 19:31:26 +00:00
CMakeLists.txt	Experimental post-pass scheduling support. Post-pass scheduling	2008-11-19 23:18:57 +00:00
DAGCombiner.cpp	Move 3 "(add (select cc, 0, c), x) -> (select cc, x, (add, x, c))"	2009-03-12 06:52:53 +00:00
FastISel.cpp	Pass in a std::string when getting the names of debugging things. This cuts down	2009-03-09 05:04:40 +00:00
LegalizeDAG.cpp	Pass in a std::string when getting the names of debugging things. This cuts down	2009-03-09 05:04:40 +00:00
LegalizeFloatTypes.cpp	bug 3610: Floating point vaarg not softened.	2009-02-21 19:11:18 +00:00
LegalizeIntegerTypes.cpp	PR3686: make the legalizer handle bitcast from i80 to x86 long double.	2009-03-04 06:23:34 +00:00
LegalizeTypes.cpp	Use getDebugLoc forwarder instead of getNode()->getDebugLoc.	2009-02-07 19:59:05 +00:00
LegalizeTypes.h	PR3686: make the legalizer handle bitcast from i80 to x86 long double.	2009-03-04 06:23:34 +00:00
LegalizeTypesGeneric.cpp	Revert BuildVectorSDNode related patches: 65426, 65427, and 65296.	2009-02-25 22:49:59 +00:00
LegalizeVectorTypes.cpp	Revert BuildVectorSDNode related patches: 65426, 65427, and 65296.	2009-02-25 22:49:59 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
ScheduleDAGFast.cpp	When scheduling a block in parts, keep track of the overall	2009-02-11 04:27:20 +00:00
ScheduleDAGList.cpp	When scheduling a block in parts, keep track of the overall	2009-02-11 04:27:20 +00:00
ScheduleDAGRRList.cpp	Fix ScheduleDAGRRList::CopyAndMoveSuccessors' handling of nodes	2009-03-06 02:23:01 +00:00
ScheduleDAGSDNodes.cpp	When scheduling a block in parts, keep track of the overall	2009-02-11 04:27:20 +00:00
ScheduleDAGSDNodes.h	When scheduling a block in parts, keep track of the overall	2009-02-11 04:27:20 +00:00
ScheduleDAGSDNodesEmit.cpp	When scheduling a block in parts, keep track of the overall	2009-02-11 04:27:20 +00:00
SelectionDAG.cpp	Fix BuildVectorSDNode::isConstantSplat to handle one-element vectors.	2009-03-04 17:47:01 +00:00
SelectionDAGBuild.cpp	Pass in a std::string when getting the names of debugging things. This cuts down	2009-03-09 05:04:40 +00:00
SelectionDAGBuild.h	Generate these labels when we're in "fast" mode, not simply when we're no in	2009-02-19 21:12:54 +00:00
SelectionDAGISel.cpp	Enable Chris' value propagation change. It make available known sign, zero, one bits information for values that are live out of basic blocks. The goal is to eliminate unnecessary sext, zext, truncate of values that are live-in to blocks. This does not handle PHI nodes yet.	2009-03-12 06:29:49 +00:00
SelectionDAGPrinter.cpp	Pass in a std::string when getting the names of debugging things. This cuts down	2009-03-09 05:04:40 +00:00
TargetLowering.cpp	Introduce new linkage types linkonce_odr, weak_odr, common_odr	2009-03-07 15:45:40 +00:00