4 Commits

Author	SHA1	Message	Date
Bill Wendling	90bc19cd91	Modify the LLVM assembly output so that it uses references to represent function attributes. ... This makes the LLVM assembly look better. E.g.: define void @foo() #0 { ret void } attributes #0 = { nounwind noinline ssp } llvm-svn: 175605	2013-02-20 07:21:42 +00:00
Bill Wendling	1c7cc8ae90	Remove the AttrBuilder form of the Attribute::get creators. ... The AttrBuilder is for building a collection of attributes. The Attribute object holds only one attribute. So it's not really useful for the Attribute object to have a creator which takes an AttrBuilder. This has two fallouts: 1. The AttrBuilder no longer holds its internal attributes in a bit-mask form. 2. The attributes are now ordered alphabetically (hence why the tests have changed). llvm-svn: 174110	2013-01-31 23:16:25 +00:00
Bill Wendling	f2955aa3f2	Convert getAttributes() to return an AttributeSetNode. ... The AttributeSetNode contains all of the attributes. This removes one (hopefully last) use of the Attribute class as a container of multiple attributes. llvm-svn: 173761	2013-01-29 03:20:31 +00:00
Bill Wendling	d154e283f2	Add the IR attribute 'sspstrong'. ... SSPStrong applies a heuristic to insert stack protectors in these situations: * A Protector is required for functions which contain an array, regardless of type or length. * A Protector is required for functions which contain a structure/union which contains an array, regardless of type or length. Note, there is no limit to the depth of nesting. * A protector is required when the address of a local variable (i.e., stack based variable) is exposed. (E.g., such as through a local whose address is taken as part of the RHS of an assignment or a local whose address is taken as part of a function argument.) This patch implements the SSPString attribute to be equivalent to SSPRequired. This will change in a subsequent patch. llvm-svn: 173230	2013-01-23 06:41:41 +00:00