105 Commits

Author	SHA1	Message	Date
Dan Gohman	f9bbcd1afd	Major calling convention code refactoring. ... Instead of awkwardly encoding calling-convention information with ISD::CALL, ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering provides three virtual functions for targets to override: LowerFormalArguments, LowerCall, and LowerRet, which replace the custom lowering done on the special nodes. They provide the same information, but in a more immediately usable format. This also reworks much of the target-independent tail call logic. The decision of whether or not to perform a tail call is now cleanly split between target-independent portions, and the target dependent portion in IsEligibleForTailCallOptimization. This also synchronizes all in-tree targets, to help enable future refactoring and feature work. llvm-svn: 78142	2009-08-05 01:29:28 +00:00
Eli Friedman	aea9b65668	Make SINT_TO_FP/UINT_TO_FP vector legalization queries query on the ... integer type to be consistent with normal operation legalization. No visible change because nothing is actually using this at the moment. llvm-svn: 72980	2009-06-06 03:27:50 +00:00
Eli Friedman	3b251705fd	Remove special cases for more opcodes. ... llvm-svn: 72467	2009-05-27 07:58:35 +00:00
Eli Friedman	ac149ee60a	Add a comment which should hopefully make the purpose of this method a ... bit clearer. llvm-svn: 72374	2009-05-24 20:32:10 +00:00
Eli Friedman	da90dd6d72	Add a new step to legalization to legalize vector math operations. This ... will allow simplifying LegalizeDAG to eliminate type legalization. (I have a patch to do that, but it's not quite finished; I'll commit it once it's finished and I've fixed any review comments for this patch.) See the comment at the beginning of lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp for more details on the motivation for this patch. llvm-svn: 72325	2009-05-23 12:35:30 +00:00