From 7f7b22674ed8e9633cd0e47662508c3641e9f967 Mon Sep 17 00:00:00 2001 From: Kimplul Date: Tue, 22 Oct 2024 17:40:09 +0300 Subject: use type-specific vectors instead of generic ones + An attempt at speeding up function calls in the interpreted mode --- examples/loop.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 examples/loop.c (limited to 'examples/loop.c') diff --git a/examples/loop.c b/examples/loop.c new file mode 100644 index 0000000..f4f66ae --- /dev/null +++ b/examples/loop.c @@ -0,0 +1,32 @@ +#include +#include "../include/ejit/ejit.h" + +int main() +{ + struct ejit_func *f = ejit_create_func(EJIT_INT64, 0, NULL); + + ejit_movi(f, EJIT_GPR(3), 1); // location 3 just has a constant 1 for + // increment + ejit_movi(f, EJIT_GPR(2), 0); // location 2 is i = 0 + ejit_movi(f, EJIT_GPR(1), 1000000000); // location 1 is limit = one billion + ejit_movi(f, EJIT_GPR(0), 0); // location 0 is total = 0 + + struct ejit_label l = ejit_label(f); // top + ejit_addr(f, EJIT_GPR(0), EJIT_GPR(0), EJIT_GPR(2)); // add i to total + ejit_addr(f, EJIT_GPR(2), EJIT_GPR(2), EJIT_GPR(3)); // add 1 to i + struct ejit_reloc r = ejit_bltr(f, EJIT_GPR(2), EJIT_GPR(1)); // if i is less than limit + + ejit_retr(f, EJIT_GPR(0)); // return total + + ejit_patch(f, r, l); + + /* the highest location we used was 3, so we need to request 4 locations + * for general purpose registers in total. No floating point registers, + * so 0. */ + ejit_compile_func(f, 4, 0, true); + long result = ejit_run_func(f, 0, NULL); // no args so this is fine + printf("%ld\n", result); + + ejit_destroy_func(f); + return 0; +} -- cgit v1.2.3