mirror of
https://github.com/c64scene-ar/llvm-6502.git
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a348c56fde
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35266 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
1.0 KiB
Plaintext
60 lines
1.0 KiB
Plaintext
//===---------------------------------------------------------------------===//
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// Random ideas for the X86 backend: MMX-specific stuff.
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//===---------------------------------------------------------------------===//
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//===---------------------------------------------------------------------===//
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We should compile
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#include <mmintrin.h>
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extern __m64 C;
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void baz(__v2si *A, __v2si *B)
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{
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*A = __builtin_ia32_psllq(*B, C);
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_mm_empty();
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}
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to:
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.globl _baz
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_baz:
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call L3
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"L00000000001$pb":
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L3:
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popl %ecx
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subl $12, %esp
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movl 20(%esp), %eax
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movq (%eax), %mm0
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movl L_C$non_lazy_ptr-"L00000000001$pb"(%ecx), %eax
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movq (%eax), %mm1
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movl 16(%esp), %eax
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psllq %mm1, %mm0
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movq %mm0, (%eax)
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emms
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addl $12, %esp
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ret
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not:
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_baz:
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subl $12, %esp
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call "L1$pb"
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"L1$pb":
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popl %eax
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movl L_C$non_lazy_ptr-"L1$pb"(%eax), %eax
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movl (%eax), %ecx
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movl %ecx, (%esp)
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movl 4(%eax), %eax
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movl %eax, 4(%esp)
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movl 20(%esp), %eax
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movq (%eax), %mm0
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movq (%esp), %mm1
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psllq %mm1, %mm0
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movl 16(%esp), %eax
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movq %mm0, (%eax)
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emms
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addl $12, %esp
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ret
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