Bob Wilson b1303d05a8 Change SelectionDAG type legalization to allow BUILD_VECTOR operands to be ... promoted to legal types without changing the type of the vector. This is following a suggestion from Duncan (http://lists.cs.uiuc.edu/pipermail/llvmdev/2009-February/019923.html). The transformation that used to be done during type legalization is now postponed to DAG legalization. This allows the BUILD_VECTORs to be optimized and potentially handled specially by target-specific code. It turns out that this is also consistent with an optimization done by the DAG combiner: a BUILD_VECTOR and INSERT_VECTOR_ELT may be combined by replacing one of the BUILD_VECTOR operands with the newly inserted element; but INSERT_VECTOR_ELT allows its scalar operand to be larger than the element type, with any extra high bits being implicitly truncated. The result is a BUILD_VECTOR where one of the operands has a type larger the the vector element type. Any code that operates on BUILD_VECTORs may now need to be aware of the potential type discrepancy between the vector element type and the BUILD_VECTOR operands. This patch updates all of the places that I could find to handle that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68996 91177308-0d34-0410-b5e6-96231b3b80d8		2009-04-13 22:05:19 +00:00
..
AsmPrinter.h	Pass in the std::string parameter instead of returning it by value.	2009-04-10 00:12:49 +00:00
BreakCriticalMachineEdge.h
CallingConvLower.h
DAGISelHeader.h
DebugLoc.h
DwarfWriter.h	Right now, Debugging information to encode scopes (DW_TAG_lexical_block) relies on DBG_LABEL. Unfortunately this intefers with the quality of optimized code.	2009-04-13 18:13:16 +00:00
ELFRelocation.h
FastISel.h	optimize FastISel::UpdateValueMap to avoid duplicate map lookups,	2009-04-12 07:45:01 +00:00
FileWriters.h
GCMetadata.h
GCMetadataPrinter.h
GCs.h
GCStrategy.h
IntrinsicLowering.h
LatencyPriorityQueue.h
LinkAllAsmWriterComponents.h
LinkAllCodegenComponents.h
LiveInterval.h	Use CHAR_BIT instead of hard-coding 8 in several places where it	2009-04-01 18:45:54 +00:00
LiveIntervalAnalysis.h	Fix PR3391 and PR3864. Reg allocator infinite looping.	2009-03-23 18:24:37 +00:00
LiveStackAnalysis.h
LiveVariables.h
MachineBasicBlock.h	Reapply 68073, with fixes. EH Landing-pad basic blocks are not	2009-03-31 18:39:13 +00:00
MachineCodeEmitter.h
MachineConstantPool.h	Use CHAR_BIT instead of hard-coding 8 in several places where it	2009-04-01 18:45:54 +00:00
MachineDominators.h
MachineFrameInfo.h
MachineFunction.h	Revert r67844. This fixes the llvm-gcc-4.2 build on Darwin.	2009-03-27 18:37:13 +00:00
MachineFunctionPass.h	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
MachineInstr.h	Fix pr3954. The register scavenger asserts for inline assembly with	2009-04-09 17:16:43 +00:00
MachineInstrBuilder.h
MachineJumpTableInfo.h
MachineLocation.h
MachineLoopInfo.h
MachineMemOperand.h
MachineModuleInfo.h	DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used.	2009-04-10 18:58:59 +00:00
MachineOperand.h
MachinePassRegistry.h
MachineRegisterInfo.h
MachineRelocation.h
MachORelocation.h
Passes.h
PseudoSourceValue.h
RegAllocRegistry.h
RegisterCoalescer.h
RegisterScavenging.h
RuntimeLibcalls.h
ScheduleDAG.h	Add a new bit to SUnit to record whether a node has implicit physreg	2009-03-23 16:10:52 +00:00
ScheduleHazardRecognizer.h
SchedulerRegistry.h
SelectionDAG.h	Remove the obsolete SelectionDAG::getNodeValueTypes and simplify	2009-04-09 23:54:40 +00:00
SelectionDAGISel.h
SelectionDAGNodes.h	Change SelectionDAG type legalization to allow BUILD_VECTOR operands to be	2009-04-13 22:05:19 +00:00
ValueTypes.h
ValueTypes.td