From: Ben Avison <bavi...@riscosopen.org> This knocks off one instruction per row. The effect is probably too small to be measurable, but might as well be included. The second occurrence of this sequence doesn't actually benefit at all, but is changed for consistency. --- pixman/pixman-arm-simd-asm.h | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/pixman/pixman-arm-simd-asm.h b/pixman/pixman-arm-simd-asm.h index 74400c1..3a2c250 100644 --- a/pixman/pixman-arm-simd-asm.h +++ b/pixman/pixman-arm-simd-asm.h @@ -741,12 +741,9 @@ fname: preload_leading_step1 mask_bpp, WK2, MASK preload_leading_step1 dst_r_bpp, WK3, DST - tst DST, #15 + ands WK0, DST, #15 beq 154f - rsb WK0, DST, #0 /* bits 0-3 = number of leading bytes until destination aligned */ - .if (src_bpp != 0 && src_bpp != 2*dst_w_bpp) || (mask_bpp != 0 && mask_bpp != 2*dst_w_bpp) - PF and, WK0, WK0, #15 - .endif + rsb WK0, WK0, #16 /* bits 0-3 = number of leading bytes until destination aligned */ preload_leading_step2 src_bpp, src_bpp_shift, WK1, SRC preload_leading_step2 mask_bpp, mask_bpp_shift, WK2, MASK @@ -787,9 +784,9 @@ fname: preload_line 0, dst_r_bpp, dst_bpp_shift, DST sub X, X, #128/dst_w_bpp /* simplifies inner loop termination */ - tst DST, #15 + ands WK0, DST, #15 beq 164f - rsb WK0, DST, #0 /* bits 0-3 = number of leading bytes until destination aligned */ + rsb WK0, WK0, #16 /* bits 0-3 = number of leading bytes until destination aligned */ leading_15bytes process_head, process_tail -- 1.8.5.3 _______________________________________________ Pixman mailing list Pixman@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/pixman