9 Commits

Author	SHA1	Message	Date
Duncan Sands	1d35e9aebe	Ignore loads from and stores to local memory (i.e. allocas) ... when deciding whether to mark a function readnone/readonly. Since the pass is currently run before SROA, this may be quite helpful. Requested by Chris on IRC. llvm-svn: 57050	2008-10-04 13:24:24 +00:00
Nuno Lopes	2bd7b24f1a	add AU.setPreservesCFG() since this pass only adds and removes function attributes ... llvm-svn: 56868	2008-09-30 18:34:38 +00:00
Duncan Sands	57512a1be4	Speed up these passes when the callgraph has ... huge simply connected components. Suggested by Chris. llvm-svn: 56787	2008-09-29 14:59:04 +00:00
Duncan Sands	e340e18783	Tweak some comments. ... llvm-svn: 56784	2008-09-29 13:35:31 +00:00
Duncan Sands	08d91178e9	Rename isWeakForLinker to mayBeOverridden. Use it ... instead of hasWeakLinkage in a bunch of optimization passes. llvm-svn: 56782	2008-09-29 11:25:42 +00:00
Devang Patel	a05633e105	Now Attributes are divided in three groups ... - return attributes - inreg, zext and sext - parameter attributes - function attributes - nounwind, readonly, readnone, noreturn Return attributes use 0 as the index. Function attributes use ~0U as the index. This patch requires corresponding changes in llvm-gcc and clang. llvm-svn: 56704	2008-09-26 22:53:05 +00:00
Devang Patel	4c758ea3e0	Large mechanical patch. ... s/ParamAttr/Attribute/g s/PAList/AttrList/g s/FnAttributeWithIndex/AttributeWithIndex/g s/FnAttr/Attribute/g This sets the stage - to implement function notes as function attributes and - to distinguish between function attributes and return value attributes. This requires corresponding changes in llvm-gcc and clang. llvm-svn: 56622	2008-09-25 21:00:45 +00:00
Duncan Sands	e1dc84be64	Implement review feedback from Devang: make use ... of mayReadFromMemory and mayWriteToMemory. llvm-svn: 56387	2008-09-20 16:45:58 +00:00
Duncan Sands	af25ee7ffc	Add a new pass AddReadAttrs which works out which functions ... can get the readnone/readonly attributes, and gives them it. The plan is to remove markmodref (which did the same thing by querying GlobalsModRef) and delete the analogous functionality from GlobalsModRef. llvm-svn: 56341	2008-09-19 08:17:05 +00:00