[LLVMbugs] [Bug 3205] New: always_inline doesn't always

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3205

           Summary: always_inline doesn't always
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: LLVM Codegen
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: alexr at leftfield.org
                CC: llvmbugs at cs.uiuc.edu


ReadSwapShort isn't inlined into myfunc in the below code. Building with:
"llvmc -O3 -S -emit-llvm cmap4.c -clang". Without -clang, it is inlined.

inline __attribute__((always_inline))
unsigned short _OSSwapInt16(unsigned short _data)
{
    return ((_data << 8) | (_data >> 8));
}

inline __attribute__((always_inline))
unsigned short ReadSwapShort(unsigned char* data, unsigned int offset)
{
    return _OSSwapInt16(*(unsigned short*) &data[offset]);
}

unsigned short myfunc(unsigned char* cmap, unsigned int offset, unsigned short
c)
{
    return ReadSwapShort(cmap, offset);
}


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