CODEWITHSUNDEEP
gccx86ssesimdmmx
user2449436
user2449436

Reputation:

Compile Error from x86 that uses MOVAPS

I'm getting a compile error of Error: operand type mismatch for 'movaps', and googling hasn't revealed a solution. movups and addps also give the same error.

Here's a relevant excerpt:

# load address into %eax
movaps %eax, %mm0

For completeness, I'm compiling the .s file with -m32.

Upvotes: 0

Views: 706

Answers (1)

Paul R
Paul R

Reputation: 212929

You are missing a level of indirection on the first argument, and the second argument needs to be an XMM register (i.e. 128 bit SSE), not an MM register (old 64 bit MMX):

movaps (%eax), %xmm0

If you can use intrinsics in C or C++ rather than writing raw asm then you can do this kind of thing a lot more easily, e.g.

__m128 v = _mm_load_ps(ptr);

Upvotes: 1

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