diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -41,7 +41,10 @@ $(BUILD)/obj/%.o: %.c $(HEADERS) # The lists' searches count a node's keys and positions whole, and move # items in a leaf column by column: -O3 makes vector instructions of them # (docs/design/020: 8% of a breadth first search). -LIST_OPTIMIZE ?= -O3 +# Their loops start each at a 64-byte line: else a change anywhere in the +# file moves them, and the batch executor's hot loops ran 6% apart with the +# same instructions (knapsack 8.26, 8.74, 8.20 ms; docs/research/138). +LIST_OPTIMIZE ?= -O3 -falign-loops=64 $(BUILD)/obj/core/module-list.o: CFLAGS += $(LIST_OPTIMIZE) # A batch's instructions are loops over its lanes: vector instructions too (docs/design/024). $(BUILD)/obj/core/module-batch.o: CFLAGS += $(LIST_OPTIMIZE) |