[llvm-bugs] [Bug 28491] New: Generating C++ using -march=cpp generate code that does not compile

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https://llvm.org/bugs/show_bug.cgi?id=28491

            Bug ID: 28491
           Summary: Generating C++ using -march=cpp generate code that
                    does not compile
           Product: tools
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: llc
          Assignee: unassignedbugs at nondot.org
          Reporter: rju65 at terransystems.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 16719
  --> https://llvm.org/bugs/attachment.cgi?id=16719&action=edit
this file contains the three files. Helloworld.c .ll and .cpp

>From what I've been able to find, I believe this is an issue. I'm just starting
to understand how to use LLVM in my own project was hoping this would help me
learn the LLVM c++ api. 

The code generated for my simple Hello_world 'C' program does not compile. I've
found a reference
[http://lists.llvm.org/pipermail/llvm-dev/2016-February/095272.html] deals with
one aspect of the code generated that needs to change - 
from : Value* int32_argc = args++;
to :   Value* int32_argc = &*(args++); // I believe

>From searching the include path the following is in 'llvm/IR/' not as generated
in
<llvm/Analysis/Verifier.h>

the instantiation of the PassManager needs the legacy namespace prefixed.

There are other items I'm having issues with; 'PrintMessageAction' appears to
be undefined. clang wants three parameters for
ConstantExpr::getGetElementPtr(gvar_array__str, const_ptr_11_indices);

I was really pleased to find out that I could create c++ code for my IR.
examples are always useful. I'm hoping this report helps.

I'm running Ubuntu 14.04. the installed version of clang 3.8.1 from LLVM
download. 

Best regards
Ray

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