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perf(matmul): pre-fire DMA Ch0 load + inline wait/DMA start + XOR bank toggle

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user-sample.c v2 optimizations:
- Pre-fire DMA Ch0 load at loop tail to overlap fully with IP compute
- Inline wait_matmul_done/wait_dma_done to eliminate function call overhead
- Inline DMA register writes, skip redundant STATUS_BUSY_BIT check
- Replace g%2 with XOR bank toggle (bank ^= 1)
- Cache volatile pointers in locals (ch0, ch1, mat_status, mat_ctrl)

Makefile: bump -O2 to -O3
This commit is contained in:
FallenSigh
2026-06-26 03:39:32 +08:00
parent a2b496ca8d
commit 81c636fb56
4 changed files with 508 additions and 471 deletions
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2
sdk/software/examples/asm/Makefile
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@@ -1,7 +1,7 @@
TARGET = user-sample
MATMUL_GROUP_NUM ?= 5000
CFLAGS += -O2 -g -DMATMUL_GROUP_NUM=$(MATMUL_GROUP_NUM)
CFLAGS += -O3 -g -DMATMUL_GROUP_NUM=$(MATMUL_GROUP_NUM)
C_SRCS := $(wildcard ./*.c )