[LLVMbugs] [Bug 4308] New: clang: add support for -m32

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4308

           Summary: clang: add support for -m32
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu
            Blocks: 4068


This is needed to build the ACPI/realmode code for a 64-bit Linux kernel.

Currently clang does this:
clang: warning: argument unused during compilation: '-m32'
/tmp/cc-j5tdcX.s: Assembler messages:
/tmp/cc-j5tdcX.s:40: Error: bad register name `%r15'
/tmp/cc-j5tdcX.s:41: Error: bad register name `%r14'
/tmp/cc-j5tdcX.s:42: Error: bad register name `%rbx'
/tmp/cc-j5tdcX.s:43: Error: bad register name `%rip)'
/tmp/cc-j5tdcX.s:46: Error: bad register name `%rip)'
/tmp/cc-j5tdcX.s:51: Error: bad register name `%r14d'
/tmp/cc-j5tdcX.s:52: Error: bad register name `%r15d'
/tmp/cc-j5tdcX.s:55: Error: bad register name `%rbx)'
/tmp/cc-j5tdcX.s:56: Error: bad register name `%rbx'
/tmp/cc-j5tdcX.s:57: Error: bad register name `%rbx'
/tmp/cc-j5tdcX.s:65: Error: bad register name `%r15d'
/tmp/cc-j5tdcX.s:87: Error: bad register name `%r14d'
/tmp/cc-j5tdcX.s:109: Error: bad register name `%rip)'
/tmp/cc-j5tdcX.s:120: Error: bad register name `%rip)'
/tmp/cc-j5tdcX.s:126: Error: bad register name `%rip)'
/tmp/cc-j5tdcX.s:131: Error: bad register name `%rbx'
/tmp/cc-j5tdcX.s:132: Error: bad register name `%r14'
/tmp/cc-j5tdcX.s:133: Error: bad register name `%r15'


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