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syntax fixes to the SSE version

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This commit is contained in:
Josh Coalson 2001-05-21 21:50:50 +00:00
parent 2d9d31e854
commit 81241a9fb9
1 changed files with 10 additions and 8 deletions
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18
src/libFLAC/i386/lpc_asm.nasm
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@ -157,7 +157,9 @@ FLAC__lpc_compute_autocorrelation_asm:
inc ebp ; sample++
add eax, byte 4 ; &data[sample++]
dec ecx
jnz .outer_loop
jecxz .outer_loop_end ; can't "jnz .outer_loop" because of distance
jmp .outer_loop
.outer_loop_end:
; for(; sample < data_len; sample++) {
; d = data[sample];
@ -199,7 +201,7 @@ FLAC__lpc_compute_autocorrelation_asm:
pop ebp
ret
; NOTE: this SSE version is not even tested yet and only works for lag == 8
;@@@ NOTE: this SSE version is not even tested yet and only works for lag == 8
FLAC__lpc_compute_autocorrelation_sse:
; esp + 4 == data[]
@ -222,8 +224,8 @@ FLAC__lpc_compute_autocorrelation_sse:
movaps xmm1, xmm0 ; xmm1 = data[0],data[0],data[0],data[0]
xorps xmm3, xmm3 ; xmm3 = 0,0,0,0
.warmup: ; xmm3:xmm2 = data[sample-[7..0]]
movps xmm4, xmm0
movps xmm5, xmm1 ; xmm5:xmm4 = xmm1:xmm0 = data[sample]*8
movaps xmm4, xmm0
movaps xmm5, xmm1 ; xmm5:xmm4 = xmm1:xmm0 = data[sample]*8
mulps xmm4, xmm2
mulps xmm5, xmm3 ; xmm5:xmm4 = xmm1:xmm0 * xmm3:xmm2
addps xmm6, xmm4
@ -242,13 +244,13 @@ FLAC__lpc_compute_autocorrelation_sse:
; now shift the lagged samples
movaps xmm4, xmm2
movaps xmm5, xmm3
shufps xmm2, xmm4, 2103h ; xmm2
shufps xmm3, xmm5, 2103h ; xmm2
shufps xmm2, xmm4, 93h ; 93h=2-1-0-3 => xmm2 gets rotated left by one float
shufps xmm3, xmm5, 93h ; 93h=2-1-0-3 => xmm3 gets rotated left by one float
movss xmm3, xmm2
movss xmm2, xmm0
movps xmm4, xmm0
movps xmm5, xmm1 ; xmm5:xmm4 = xmm1:xmm0 = data[sample]*8
movaps xmm4, xmm0
movaps xmm5, xmm1 ; xmm5:xmm4 = xmm1:xmm0 = data[sample]*8
mulps xmm4, xmm2
mulps xmm5, xmm3 ; xmm5:xmm4 = xmm1:xmm0 * xmm3:xmm2
addps xmm6, xmm4