[LLVMbugs] [Bug 6666] New: llvm-gcc fails to emit volatile for volatile array struct argument?

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6666

           Summary: llvm-gcc fails to emit volatile for volatile array
                    struct argument?
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: zhousheng00 at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Case here:

struct X {
  int a;
  int b;
  int c;
};
int foo(volatile struct X x[100]) {
  int i;
  int r = 0;
  for (i = 0; i < 100; ++i)
    r += x[i].a;
}

With ToT, in the emitted ll code, the volatile for LoadInst of x[100] is lost.

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