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

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Fri Dec 12 17:40:25 PST 2008


           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
    return ReadSwapShort(cmap, offset);

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