[LLVMbugs] [Bug 1852] New: GCC 4.0 front end won't build for a target that doesn' t support DWARF exception handling

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1852

           Summary: GCC 4.0 front end won't build for a target that doesn't
                    support DWARF exception handling
           Product: libraries
           Version: 2.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core LLVM classes
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jay.foad at antixlabs.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1283)
 --> (http://llvm.org/bugs/attachment.cgi?id=1283)
patch

(I couldn't find a bugzilla product/component for the GCC front end.)

When building the GCC 4.0 front end for LLVM 2.1, configured for a proprietary
target that doesn't support DWARF debug info or exception handling, I got this:

.../gcc/llvm-convert.cpp: In member function ‘bool
TreeToLLVM::EmitBuiltinEHReturnDataRegno(tree_node*, llvm::Value*&)’:
.../gcc/llvm-convert.cpp:4749: error: ‘EH_RETURN_DATA_REGNO’ was not
declared in this scope
.../gcc/llvm-convert.cpp: In member function ‘bool
TreeToLLVM::EmitBuiltinInitDwarfRegSizes(tree_node*, llvm::Value*&)’:
.../gcc/llvm-convert.cpp:4811: error: ‘DWARF_FRAME_RETURN_COLUMN’ was not
declared in this scope
.../gcc/llvm-convert.cpp:4828: error: ‘DWARF_FRAME_RETURN_COLUMN’ was not
declared in this scope
make: *** [llvm-convert.o] Error 1

I've attached an obvious patch to fix this.


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