http://llvm.org/bugs/show_bug.cgi?id=14011
Bug #: 14011
Summary: tblgen support for ptr_rc / PointerLikeRegClass
incomplete for gen-asm-matcher support
Product: new-bugs
Version: trunk
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Against LLVM trunk sources (03 Oct 2012), and after application of two patches
to get past some easy cosmetic issues
(
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121001/152389.html
)
(
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121001/152390.html
)
running llvm-tblgen against PPC.td with -gen-asm-matcher complains about ptr_rc
not deriving from class Operand.
$ ./build/bin/llvm-tblgen llvm/lib/Target/PowerPC/PPC.td -I
~/llvm-head/llvm/include -I ~/llvm-head/llvm/lib/Target/PowerPC/
-gen-asm-matcher
<...>
Included from llvm/lib/Target/PowerPC/PPC.td:16:
/home/willschm/llvm-head/llvm/include/llvm/Target/Target.td:494:1:
error: Operand `ptr_rc' does not derive from class Operand!
def ptr_rc : PointerLikeRegClass<0>;
^
Per comments in Target.td, it seems like this should be handled as a special
case within tablegen.
/// PointerLikeRegClass - ... TableGen treats the register class as having a
symbolic
/// type that it doesn't know, and resolves the actual regclass to use by using
/// the TargetRegisterInfo::getPointerRegClass() hook at codegen time.
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