From: Cristian Dumitrescu Date: Sun, 11 Apr 2021 23:23:37 +0000 (+0100) Subject: pipeline: modularize SWX instruction optimizer X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0f5df4ea5ddfa2f04fa821a3fed149641bb55b32;p=dpdk.git pipeline: modularize SWX instruction optimizer Decouple between the different instruction optimizer. Allow each optimization to run as a separate iteration on the entire instruction stream. Signed-off-by: Cristian Dumitrescu --- diff --git a/lib/librte_pipeline/rte_swx_pipeline.c b/lib/librte_pipeline/rte_swx_pipeline.c index e17b449939..90f103f90b 100644 --- a/lib/librte_pipeline/rte_swx_pipeline.c +++ b/lib/librte_pipeline/rte_swx_pipeline.c @@ -8095,8 +8095,34 @@ instr_verify(struct rte_swx_pipeline *p __rte_unused, return 0; } +static uint32_t +instr_compact(struct instruction *instructions, + struct instruction_data *instruction_data, + uint32_t n_instructions) +{ + uint32_t i, pos = 0; + + /* Eliminate the invalid instructions that have been optimized out. */ + for (i = 0; i < n_instructions; i++) { + struct instruction *instr = &instructions[i]; + struct instruction_data *data = &instruction_data[i]; + + if (data->invalid) + continue; + + if (i != pos) { + memcpy(&instructions[pos], instr, sizeof(*instr)); + memcpy(&instruction_data[pos], data, sizeof(*data)); + } + + pos++; + } + + return pos; +} + static int -instr_pattern_extract_many_detect(struct instruction *instr, +instr_pattern_extract_many_search(struct instruction *instr, struct instruction_data *data, uint32_t n_instr, uint32_t *n_pattern_instr) @@ -8125,9 +8151,9 @@ instr_pattern_extract_many_detect(struct instruction *instr, } static void -instr_pattern_extract_many_optimize(struct instruction *instr, - struct instruction_data *data, - uint32_t n_instr) +instr_pattern_extract_many_replace(struct instruction *instr, + struct instruction_data *data, + uint32_t n_instr) { uint32_t i; @@ -8141,8 +8167,46 @@ instr_pattern_extract_many_optimize(struct instruction *instr, } } +static uint32_t +instr_pattern_extract_many_optimize(struct instruction *instructions, + struct instruction_data *instruction_data, + uint32_t n_instructions) +{ + uint32_t i; + + for (i = 0; i < n_instructions; ) { + struct instruction *instr = &instructions[i]; + struct instruction_data *data = &instruction_data[i]; + uint32_t n_instr = 0; + int detected; + + /* Extract many. */ + detected = instr_pattern_extract_many_search(instr, + data, + n_instructions - i, + &n_instr); + if (detected) { + instr_pattern_extract_many_replace(instr, + data, + n_instr); + i += n_instr; + continue; + } + + /* No pattern starting at the current instruction. */ + i++; + } + + /* Eliminate the invalid instructions that have been optimized out. */ + n_instructions = instr_compact(instructions, + instruction_data, + n_instructions); + + return n_instructions; +} + static int -instr_pattern_emit_many_tx_detect(struct instruction *instr, +instr_pattern_emit_many_tx_search(struct instruction *instr, struct instruction_data *data, uint32_t n_instr, uint32_t *n_pattern_instr) @@ -8179,9 +8243,9 @@ instr_pattern_emit_many_tx_detect(struct instruction *instr, } static void -instr_pattern_emit_many_tx_optimize(struct instruction *instr, - struct instruction_data *data, - uint32_t n_instr) +instr_pattern_emit_many_tx_replace(struct instruction *instr, + struct instruction_data *data, + uint32_t n_instr) { uint32_t i; @@ -8202,8 +8266,46 @@ instr_pattern_emit_many_tx_optimize(struct instruction *instr, data[i].invalid = 1; } +static uint32_t +instr_pattern_emit_many_tx_optimize(struct instruction *instructions, + struct instruction_data *instruction_data, + uint32_t n_instructions) +{ + uint32_t i; + + for (i = 0; i < n_instructions; ) { + struct instruction *instr = &instructions[i]; + struct instruction_data *data = &instruction_data[i]; + uint32_t n_instr = 0; + int detected; + + /* Emit many + TX. */ + detected = instr_pattern_emit_many_tx_search(instr, + data, + n_instructions - i, + &n_instr); + if (detected) { + instr_pattern_emit_many_tx_replace(instr, + data, + n_instr); + i += n_instr; + continue; + } + + /* No pattern starting at the current instruction. */ + i++; + } + + /* Eliminate the invalid instructions that have been optimized out. */ + n_instructions = instr_compact(instructions, + instruction_data, + n_instructions); + + return n_instructions; +} + static int -instr_pattern_dma_many_detect(struct instruction *instr, +instr_pattern_dma_many_search(struct instruction *instr, struct instruction_data *data, uint32_t n_instr, uint32_t *n_pattern_instr) @@ -8232,9 +8334,9 @@ instr_pattern_dma_many_detect(struct instruction *instr, } static void -instr_pattern_dma_many_optimize(struct instruction *instr, - struct instruction_data *data, - uint32_t n_instr) +instr_pattern_dma_many_replace(struct instruction *instr, + struct instruction_data *data, + uint32_t n_instr) { uint32_t i; @@ -8250,11 +8352,11 @@ instr_pattern_dma_many_optimize(struct instruction *instr, } static uint32_t -instr_optimize(struct instruction *instructions, +instr_pattern_dma_many_optimize(struct instruction *instructions, struct instruction_data *instruction_data, uint32_t n_instructions) { - uint32_t i, pos = 0; + uint32_t i; for (i = 0; i < n_instructions; ) { struct instruction *instr = &instructions[i]; @@ -8262,39 +8364,13 @@ instr_optimize(struct instruction *instructions, uint32_t n_instr = 0; int detected; - /* Extract many. */ - detected = instr_pattern_extract_many_detect(instr, - data, - n_instructions - i, - &n_instr); - if (detected) { - instr_pattern_extract_many_optimize(instr, - data, - n_instr); - i += n_instr; - continue; - } - - /* Emit many + TX. */ - detected = instr_pattern_emit_many_tx_detect(instr, - data, - n_instructions - i, - &n_instr); - if (detected) { - instr_pattern_emit_many_tx_optimize(instr, - data, - n_instr); - i += n_instr; - continue; - } - /* DMA many. */ - detected = instr_pattern_dma_many_detect(instr, + detected = instr_pattern_dma_many_search(instr, data, n_instructions - i, &n_instr); if (detected) { - instr_pattern_dma_many_optimize(instr, data, n_instr); + instr_pattern_dma_many_replace(instr, data, n_instr); i += n_instr; continue; } @@ -8304,22 +8380,34 @@ instr_optimize(struct instruction *instructions, } /* Eliminate the invalid instructions that have been optimized out. */ - for (i = 0; i < n_instructions; i++) { - struct instruction *instr = &instructions[i]; - struct instruction_data *data = &instruction_data[i]; + n_instructions = instr_compact(instructions, + instruction_data, + n_instructions); - if (data->invalid) - continue; + return n_instructions; +} - if (i != pos) { - memcpy(&instructions[pos], instr, sizeof(*instr)); - memcpy(&instruction_data[pos], data, sizeof(*data)); - } +static uint32_t +instr_optimize(struct instruction *instructions, + struct instruction_data *instruction_data, + uint32_t n_instructions) +{ + /* Extract many. */ + n_instructions = instr_pattern_extract_many_optimize(instructions, + instruction_data, + n_instructions); - pos++; - } + /* Emit many + TX. */ + n_instructions = instr_pattern_emit_many_tx_optimize(instructions, + instruction_data, + n_instructions); - return pos; + /* DMA many. */ + n_instructions = instr_pattern_dma_many_optimize(instructions, + instruction_data, + n_instructions); + + return n_instructions; } static int