abort if configuration fails

[ardour.git] / libs / ardour / sse_avx_functions_64bit_win.s

diff --git a/libs/ardour/sse_avx_functions_64bit_win.s b/libs/ardour/sse_avx_functions_64bit_win.s
index 22829db98aab3a9c6621afdc784702872220e438..2e82ab8728a3134991b2ef0976e6a5b5cc86e7ec 100644 (file)
--- a/libs/ardour/sse_avx_functions_64bit_win.s
+++ b/libs/ardour/sse_avx_functions_64bit_win.s
@@ -494,6 +494,12 @@ x86_sse_avx_compute_peak:
        cmp     $0, %rdx
        je      .CP_END
 
+       #; create the "abs" mask in %xmm3
+       #; if will be used to discard sign bit
+       pushq   $2147483647
+       movss   (%rsp), %xmm3
+       addq    $8, %rsp
+
        #; Check for alignment 
        movq %rcx, %r8 #; buf => %rdx
        andq $28, %r8 #; mask bits 1 & 2
@@ -507,6 +513,7 @@ x86_sse_avx_compute_peak:
 
        #; Load next value from the buffer
        movss (%rcx), %xmm1
+       andps %xmm3, %xmm1      #; mask out sign bit
        maxss %xmm1, %xmm0
 
        #; increment buffer, decrement counter
@@ -535,9 +542,14 @@ x86_sse_avx_compute_peak:
        vshufps $0x00, %ymm0, %ymm0, %ymm0 #; spread single float value to the all 128 bits of xmm0 register
        vperm2f128 $0x00, %ymm0, %ymm0, %ymm0 #; extend the first 128 bits of ymm0 register to higher 128 bits
 
+       #; broadcast sign mask to the whole ymm3 register
+       vshufps $0x00, %ymm3, %ymm3, %ymm3 #; spread single float value to the all 128 bits of xmm3 register
+       vperm2f128 $0x00, %ymm3, %ymm3, %ymm3 #; extend the first 128 bits of ymm3 register to higher 128 bits
+
 .LP_AVX:
 
        vmovaps (%rcx), %ymm1
+       vandps %ymm3, %ymm1, %ymm1      #; mask out sign bit
        vmaxps %ymm1, %ymm0, %ymm0
 
        addq $32, %rcx #; buf+=8
@@ -569,6 +581,7 @@ x86_sse_avx_compute_peak:
 .POST_START:
 
        movss (%rcx), %xmm1
+       andps %xmm3, %xmm1      #; mask out sign bit
        maxss %xmm1, %xmm0
        
        addq $4, %rcx   #; buf++;