[LLVMbugs] [Bug 8054] New: clang drops volatile from struct on assignment from call

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8054

           Summary: clang drops volatile from struct on assignment from
                    call
           Product: clang
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: gohman at apple.com
                CC: llvmbugs at cs.uiuc.edu


On this C code:

struct T { int i; int j; int k; int l; int m; };
extern volatile struct T t;

struct T foo(void);

void bar(void) {
  t = foo();
}

clang emits this:

  call void @foo(%struct.T* sret @t)

The volatile qualifier has not been preserved.

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