[LLVMbugs] [Bug 8251] New: MC-COFF: GlobalAlias is not emitted

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8251

           Summary: MC-COFF: GlobalAlias is not emitted
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: geek4civic at gmail.com
                CC: llvmbugs at cs.uiuc.edu


clang++ emits aliases for dtors.
 (eg. __ZN4llvm5RegexD1Ev and __ZN4llvm5RegexD2Ev)
and compilation fails with -integrated-as.


define void @foo() {
entry:
  ret void
}

@bar =global i32 zeroinitializer

@qux = alias void ()* @foo
@quux = alias i32* @bar


$ llc -mtriple=i686-mingw32 -filetype=obj (incorrect)

SYMBOL TABLE:
[  0](sec  1)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .text
AUX scnlen 0x4 nreloc 0 nlnno 0 checksum 0x0 assoc 1 comdat 0
[  2](sec  2)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .data
AUX scnlen 0x4 nreloc 0 nlnno 0 checksum 0x0 assoc 2 comdat 0
[  4](sec  1)(fl 0x00)(ty 200)(scl   2) (nx 0) 0x00000000 _foo
[  5](sec  2)(fl 0x00)(ty   0)(scl   2) (nx 0) 0x00000000 _bar


$ llc -mtriple=i686-mingw32

        .globl  _qux
_qux = _foo
        .globl  _quux
_quux = _bar


$ as (mingw's GNU as; correct)

SYMBOL TABLE:
[  0](sec -2)(fl 0x00)(ty   0)(scl 103) (nx 1) 0x00000000 fake
File
[  2](sec  1)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .text
AUX scnlen 0x1 nreloc 0 nlnno 0
[  4](sec  2)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .data
AUX scnlen 0x4 nreloc 0 nlnno 0
[  6](sec  3)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .bss
AUX scnlen 0x0 nreloc 0 nlnno 0
[  8](sec  1)(fl 0x00)(ty 200)(scl   2) (nx 0) 0x00000000 _foo
[  9](sec  2)(fl 0x00)(ty   0)(scl   2) (nx 0) 0x00000000 _bar
[ 10](sec  1)(fl 0x00)(ty   0)(scl   2) (nx 0) 0x00000000 _qux
[ 11](sec  2)(fl 0x00)(ty   0)(scl   2) (nx 0) 0x00000000 _quux

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