From 2c9174841434e39ba0a9675946efe25be0d8a168 Mon Sep 17 00:00:00 2001 From: lemon Date: Sat, 24 Jun 2023 22:49:48 +0200 Subject: backend: don't mixup float and int temps copy propagation only happens when dataclasses match, register allocator ignores hints if hint register class and instruction class differ, also add mov between int and float regs in amd64/emit --- test/fib.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'test') diff --git a/test/fib.c b/test/fib.c index eadce03..5fe430a 100644 --- a/test/fib.c +++ b/test/fib.c @@ -13,6 +13,16 @@ unsigned fibr(unsigned x) { return fibr(x-1) + fibr(x-2); } +double fibf(unsigned x) { + double r = 0., q = 1.; + while (x-- > 1) { + double s = r + q; + r = q; + q = s; + } + return q; +} + int atoi(const char *); int printf(const char *, ...); @@ -20,6 +30,7 @@ int main(int argc, char **argv) { unsigned n = argv[1] ? atoi(argv[1]) : 10; printf("fib(%u) = %u\n", n, fib(n)); printf("fibr(%u) = %u\n", n, fibr(n)); + printf("fibf(%u) = %g\n", n, fibf(n)); } /* vim:set ts=3 sw=3 expandtab: */ -- cgit v1.2.3