Code fixes for test-matrix.
[sb-simd.git] / detect-simd.lisp
blob92161d7ea08fc5cc997e5e5564d556ba6b084352
1 #|
2 Copyright (c) 2005 Risto Laakso
3 All rights reserved.
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27 (in-package :sb-vm)
29 ;; simpler version
31 (define-vop (%detect-simd/x86)
32 (:policy :fast)
34 (:results (res :scs (descriptor-reg)))
36 (:temporary (:sc unsigned-reg :offset eax-offset :from (:argument 0)) eax)
37 (:temporary (:sc unsigned-reg :offset ebx-offset) ebx)
38 (:temporary (:sc unsigned-reg :offset ecx-offset) ecx)
39 (:temporary (:sc unsigned-reg :offset edx-offset) edx)
41 (:generator 10
42 (inst mov eax 1)
43 (inst cpuid)
44 (inst mov ebx edx)
46 ;; sse3
47 (inst and ecx 1)
48 (inst shl ecx 2)
50 ;; sse2/3
51 (inst shr edx 25)
52 (inst and edx #b11)
53 (inst or edx ecx)
55 ;; fixnumize
56 (inst shl edx 2)
58 (inst mov res edx)))