[Pixman] [PATCH 1/2] MIPS: DSPr2: Added more fast-paths for REVERSE operation: - out_reverse_8_0565 - out_reverse_8_8888
Nemanja Lukic
nlukic at mips.com
Sun Nov 18 10:06:57 PST 2012
From: Nemanja Lukic <nemanja.lukic at rt-rk.com>
Performance numbers before/after on MIPS-74kc @ 1GHz:
lowlevel-blt-bench results
Referent (before):
out_reverse_8_0565 = L1: 9.15 L2: 13.56 M: 10.65 ( 21.19%) HT: 9.26 VT: 9.14 R: 8.85 RT: 4.88 ( 37Kops/s)
out_reverse_8_8888 = L1: 27.72 L2: 23.22 M: 17.37 ( 57.58%) HT: 12.72 VT: 12.51 R: 11.81 RT: 6.07 ( 42Kops/s)
Optimized:
out_reverse_8_0565 = L1: 28.26 L2: 25.64 M: 20.58 ( 40.95%) HT: 16.73 VT: 16.13 R: 15.47 RT: 8.71 ( 52Kops/s)
out_reverse_8_8888 = L1: 52.74 L2: 41.44 M: 23.48 ( 77.86%) HT: 18.83 VT: 18.19 R: 16.95 RT: 9.26 ( 54Kops/s)
---
pixman/pixman-mips-dspr2-asm.S | 110 ++++++++++++++++++++++++++++++++++++++++
pixman/pixman-mips-dspr2.c | 8 +++
2 files changed, 118 insertions(+), 0 deletions(-)
diff --git a/pixman/pixman-mips-dspr2-asm.S b/pixman/pixman-mips-dspr2-asm.S
index ba22e62..64ef660 100644
--- a/pixman/pixman-mips-dspr2-asm.S
+++ b/pixman/pixman-mips-dspr2-asm.S
@@ -2100,6 +2100,116 @@ LEAF_MIPS_DSPR2(pixman_composite_add_8888_8888_asm_mips)
END(pixman_composite_add_8888_8888_asm_mips)
+LEAF_MIPS_DSPR2(pixman_composite_out_reverse_8_0565_asm_mips)
+/*
+ * a0 - dst (r5g6b5)
+ * a1 - src (a8)
+ * a2 - w
+ */
+
+ beqz a2, 4f
+ nop
+
+ SAVE_REGS_ON_STACK 0, s0, s1, s2, s3
+ li t2, 0xf800f800
+ li t3, 0x07e007e0
+ li t4, 0x001F001F
+ li t5, 0x00ff00ff
+
+ addiu t1, a2, -1
+ beqz t1, 2f
+ nop
+1:
+ lbu t0, 0(a1) /* t0 = source (a8) */
+ lbu t1, 1(a1) /* t1 = source (a8) */
+ lhu t6, 0(a0) /* t6 = destination (r5g6b5) */
+ lhu t7, 2(a0) /* t7 = destination (r5g6b5) */
+ addiu a1, a1, 2
+
+ not t0, t0
+ not t1, t1
+ andi t0, 0xff /* t0 = neg source1 */
+ andi t1, 0xff /* t1 = neg source2 */
+ CONVERT_2x0565_TO_2x8888 t6, t7, t8, t9, t3, t4, s0, s1, s2, s3
+ MIPS_2xUN8x4_MUL_2xUN8 t8, t9, t0, t1, t6, t7, t5, s0, s1, s2, s3, t8, t9
+ CONVERT_2x8888_TO_2x0565 t6, t7, t8, t9, t2, t3, t4, s0, s1
+
+ sh t8, 0(a0)
+ sh t9, 2(a0)
+ addiu a2, a2, -2
+ addiu t1, a2, -1
+ bgtz t1, 1b
+ addiu a0, a0, 4
+2:
+ beqz a2, 3f
+ nop
+ lbu t0, 0(a1) /* t0 = source (a8) */
+ lhu t1, 0(a0) /* t1 = destination (r5g6b5) */
+
+ not t0, t0
+ andi t0, 0xff /* t0 = neg source */
+ CONVERT_1x0565_TO_1x8888 t1, t2, t3, t4
+ MIPS_UN8x4_MUL_UN8 t2, t0, t1, t5, t3, t4, t6
+ CONVERT_1x8888_TO_1x0565 t1, t2, t3, t4
+
+ sh t2, 0(a0)
+3:
+ RESTORE_REGS_FROM_STACK 0, s0, s1, s2, s3
+4:
+ j ra
+ nop
+
+END(pixman_composite_out_reverse_8_0565_asm_mips)
+
+LEAF_MIPS_DSPR2(pixman_composite_out_reverse_8_8888_asm_mips)
+/*
+ * a0 - dst (a8r8g8b8)
+ * a1 - src (a8)
+ * a2 - w
+ */
+
+ beqz a2, 3f
+ nop
+ li t4, 0x00ff00ff
+ addiu t1, a2, -1
+ beqz t1, 2f
+ nop
+1:
+ lbu t0, 0(a1) /* t0 = source (a8) */
+ lbu t1, 1(a1) /* t1 = source (a8) */
+ lw t2, 0(a0) /* t2 = destination (a8r8g8b8) */
+ lw t3, 4(a0) /* t3 = destination (a8r8g8b8) */
+ addiu a1, a1, 2
+ not t0, t0
+ not t1, t1
+ andi t0, 0xff /* t0 = neg source */
+ andi t1, 0xff /* t1 = neg source */
+
+ MIPS_2xUN8x4_MUL_2xUN8 t2, t3, t0, t1, t5, t6, t4, t7, t8, t9, t2, t3, t0
+
+ sw t5, 0(a0)
+ sw t6, 4(a0)
+ addiu a2, a2, -2
+ addiu t1, a2, -1
+ bgtz t1, 1b
+ addiu a0, a0, 8
+2:
+ beqz a2, 3f
+ nop
+ lbu t0, 0(a1) /* t0 = source (a8) */
+ lw t1, 0(a0) /* t1 = destination (a8r8g8b8) */
+ not t0, t0
+ andi t0, 0xff /* t0 = neg source */
+
+ MIPS_UN8x4_MUL_UN8 t1, t0, t2, t4, t3, t5, t6
+
+ sw t2, 0(a0)
+3:
+ j ra
+ nop
+
+END(pixman_composite_out_reverse_8_8888_asm_mips)
+
LEAF_MIPS_DSPR2(pixman_scaled_nearest_scanline_8888_8_0565_OVER_asm_mips)
/*
* a0 - dst (r5g6b5)
diff --git a/pixman/pixman-mips-dspr2.c b/pixman/pixman-mips-dspr2.c
index 11f1254..a7e6f8a 100644
--- a/pixman/pixman-mips-dspr2.c
+++ b/pixman/pixman-mips-dspr2.c
@@ -54,6 +54,10 @@ PIXMAN_MIPS_BIND_FAST_PATH_SRC_DST (0, add_8_8,
uint8_t, 1, uint8_t, 1)
PIXMAN_MIPS_BIND_FAST_PATH_SRC_DST (0, add_8888_8888,
uint32_t, 1, uint32_t, 1)
+PIXMAN_MIPS_BIND_FAST_PATH_SRC_DST (0, out_reverse_8_0565,
+ uint8_t, 1, uint16_t, 1)
+PIXMAN_MIPS_BIND_FAST_PATH_SRC_DST (0, out_reverse_8_8888,
+ uint8_t, 1, uint32_t, 1)
PIXMAN_MIPS_BIND_FAST_PATH_N_MASK_DST (0, src_n_8_8888,
uint8_t, 1, uint32_t, 1)
@@ -324,6 +328,10 @@ static const pixman_fast_path_t mips_dspr2_fast_paths[] =
PIXMAN_STD_FAST_PATH (ADD, a8, null, a8, mips_composite_add_8_8),
PIXMAN_STD_FAST_PATH (ADD, a8r8g8b8, null, a8r8g8b8, mips_composite_add_8888_8888),
PIXMAN_STD_FAST_PATH (ADD, a8b8g8r8, null, a8b8g8r8, mips_composite_add_8888_8888),
+ PIXMAN_STD_FAST_PATH (OUT_REVERSE, a8, null, r5g6b5, mips_composite_out_reverse_8_0565),
+ PIXMAN_STD_FAST_PATH (OUT_REVERSE, a8, null, b5g6r5, mips_composite_out_reverse_8_0565),
+ PIXMAN_STD_FAST_PATH (OUT_REVERSE, a8, null, a8r8g8b8, mips_composite_out_reverse_8_8888),
+ PIXMAN_STD_FAST_PATH (OUT_REVERSE, a8, null, a8b8g8r8, mips_composite_out_reverse_8_8888),
PIXMAN_MIPS_SIMPLE_NEAREST_A8_MASK_FAST_PATH (OVER, a8r8g8b8, r5g6b5, mips_8888_8_0565),
PIXMAN_MIPS_SIMPLE_NEAREST_A8_MASK_FAST_PATH (OVER, a8b8g8r8, b5g6r5, mips_8888_8_0565),
--
1.7.3
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