6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-14 14:24:05 +00:00
Code Issues Projects Releases Wiki Activity

Add CodeGen support for functions that always return arguments via a new parameter attribute 'returned', which is taken advantage of in target-independent tail call opportunity detection and in ARM call lowering (when placed on an integral first parameter).

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179925 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stephen Lin
2013-04-20 05:14:40 +00:00
parent 5c34e08b9f
commit 456ca048af
20 changed files with 371 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
lib/IR/Attributes.cpp
View File

@ -195,6 +195,8 @@ std::string Attribute::getAsString(bool InAttrGrp) const {
return "readnone";
if (hasAttribute(Attribute::ReadOnly))
return "readonly";
if (hasAttribute(Attribute::Returned))
return "returned";
if (hasAttribute(Attribute::ReturnsTwice))
return "returns_twice";
if (hasAttribute(Attribute::SExt))
@ -393,6 +395,7 @@ uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
case Attribute::SanitizeThread: return 1ULL << 36;
case Attribute::SanitizeMemory: return 1ULL << 37;
case Attribute::NoBuiltin: return 1ULL << 38;
case Attribute::Returned: return 1ULL << 39;
}
llvm_unreachable("Unsupported attribute type");
}