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Taylor Kidd
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June 10, 2009 3:14 PM PDT
winnt.h declaration incompatible with func declared in emmintrin.h
I assume that this forum is trolled by the Intel C++ experts for answers the communal mind doesn't have.

I'm using Visual C++ 2008 (9.0.21022.8). And IC C++ 11.0.066.

I'm working on a module that uses old SSE 2 code. It compiles fine with VS but gets the following error using the IC:

1>Getblk_sse2.cpp
1>C:\Program Files\Microsoft SDKs\Windows\v6.0A\\include\winnt.h(3332): error #147: declaration is incompatible with "void __cdecl _mm_pause()" (declared at line 375 of "C:\Program Files\Intel\Compiler\11.0\066\cpp\include\emmintrin.h")
1> _mm_pause (
1> ^
1>

The only thing I can find is that errors similar to this can occur if you're using an older version of the IC with a newer version of VS. But I'm not.

Any ideas? I'm using Vista SP2.

Jennifer Jiang (Intel)
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June 10, 2009 4:17 PM PDT
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#1
did you use "__cdecl (/Gd)"? Try to add it.

Jennifer
Taylor Kidd
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June 10, 2009 5:51 PM PDT
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#2 Reply to #1
did you use "__cdecl (/Gd)"? Try to add it.

Jennifer


Jennifer,

Thanks. It worked.

MSDN has an explanation of the calling conventions (http://msdn.microsoft.com/en-us/library/46t77ak2.aspx), but I have to admit that I'm not sure about their advantages and disadvantages outside of __fastcall.

So I'm guessing that the problem was that winnt.h uses a __stdcall convention which didn't match with the __cdecl convention used in emmintrin.h. (Hey, if I'm wrong, correct me.)

--Taylor
Jennifer Jiang (Intel)
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June 10, 2009 6:27 PM PDT
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#3 Reply to #2
Quoting - Taylor Kidd

So I'm guessing that the problem was that winnt.h uses a __stdcall convention which didn't match with the __cdecl convention used in emmintrin.h. (Hey, if I'm wrong, correct me.)
It's the mixmatch of winnt.h and emmintrin.h. If you do not use winnt.h, you can still use _stdcall with emmintrin.h. The icl knows what to do.

Jennifer




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