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Diffstat (limited to 'examples/wiring.zc')
| -rw-r--r-- | examples/wiring.zc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/examples/wiring.zc b/examples/wiring.zc new file mode 100644 index 0000000..d10ecf5 --- /dev/null +++ b/examples/wiring.zc @@ -0,0 +1,18 @@ +// virtual enhancements: custom opcodes wired into the cpu while compiling. +// the recipes run through the core's optimizer; the jit inlines the result. +enhance popcount(x) micro + "r1 = shr x 1; r1 = and r1 0x5555555555555555; x = sub x r1" + "; r1 = shr x 2; r1 = and r1 0x3333333333333333; x = and x 0x3333333333333333; x = add x r1" + "; r1 = shr x 4; x = add x r1; x = and x 0x0f0f0f0f0f0f0f0f; x = mul x 0x0101010101010101; x = shr x 56"; +enhance div10(x) micro "x = udiv x 10"; // becomes a multiply-high, no divide +enhance hypot2(a, b) vm { 0 $ * ~ 0 $ * + }; // lifted from vm code +enhance 2 minmax(a, b) micro "r2 = min a b; r1 = max a b; r0 = r2"; +let lo, hi; +fn main() { + put_n(popcount(0xff00ff)); put_c(' '); + put_n(div10(12345)); put_c(' '); + put_n(hypot2(3, 4)); put_c(' '); + asm { 9 4 minmax hi ! lo ! } + put_n(lo); put_c('/'); put_n(hi); put_c(10); + return 0; +}
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