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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>With the new change, LLVM/Clang defines <o:p></o:p></p><p class=MsoNormal>typedef short short3 __attribute__((ext_vector_type(3)));<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>to be size of 8. <o:p></o:p></p><p class=MsoNormal>sizeof( short3 ) = 8 <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>and for short3 array, one element takes 8 bytes. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>&m[0] = 0xbed63b20 <o:p></o:p></p><p class=MsoNormal>&m[1] = 0xbed63b28 <o:p></o:p></p><p class=MsoNormal>&m[2] = 0xbed63b30 <o:p></o:p></p><p class=MsoNormal>&m[3] = 0xbed63b38 <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I notice the older LLVM/Clang still allocate short3 to be 6 byte element. <o:p></o:p></p><p class=MsoNormal>Is there any historical reason to make 6 byte short3 to become 8 byte short4?<o:p></o:p></p><p class=MsoNormal>Is short3 supposed to be defined as three shorts in a row. It is a little difficult <o:p></o:p></p><p class=MsoNormal>to connect with other language like Java JNI. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> Yin <o:p></o:p></p></div></body></html>