[LLVMbugs] [Bug 436] NEW: [interpreter/jit] Data layout broken for arch's with wierd alignment requirements

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Mon Sep 13 12:04:37 PDT 2004


           Summary: [interpreter/jit] Data layout broken for arch's with
                    wierd alignment requirements
           Product: libraries
           Version: 1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Generic Execution Engine Support
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org

The ExecutionEngine::LoadValueFromMemory, and StoreValueToMemory methods in
lib/ExecutionEngine/ExecutionEngine.cpp do not work on architectures that have
strange alignment requirements.  For example, on PPC, bool has an alignment of 4
bytes, and the target is big-endian.  The code in those methods stores the 0 or
1 in the wrong byte.

These methods are used to initialize global variables for the JIT and
interpreter, and is used to handle load/store instructions for the interpreter.
 They are both performance critical, so whatever is done shouldn't be too slow.


------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.

More information about the llvm-bugs mailing list