add bswap16/32/64

- frontend: __builtin_bswapX intrinsics
- backend: ObswapX instructions

1 files changed, 6 insertions, 0 deletions

diff --git a/test/08-bit.c b/test/08-bit.c
index 5854cad..1a157e2 100644
--- a/test/08-bit.c
+++ b/test/08-bit.c
@@ -1,6 +1,7 @@
 /* EXPECT:
 expect 6, -4, 7, -1
        6, -4, 7, -1
+CEFA CDAB3412 AA000000000000FF
 */
 
 int xor(int a) {
@@ -37,6 +38,10 @@ struct s2 bitfcopy2(struct s2 x) {
    return (struct s2){x.a};
 }
 
+int bswap16(int x) { return __builtin_bswap16(x); }
+int bswap32(int x) { return __builtin_bswap32(x); }
+long long bswap64(long long x) { return __builtin_bswap64(x); }
+
 int main(int p) {
    extern int printf(const char *, ...);
 
@@ -50,6 +55,7 @@ int main(int p) {
    foo.a = xor(foo.a |= 3);
    printf("expect %d, -4, 7, %d\n", 5+p, (short)((-1|3)^3|555));
    printf("       %d, %d, %lld, %d\n", foo.x, foo.k+=1, foo.h, foo.a);
+   printf("%X %X %llX\n", bswap16(0xFACE), bswap32(0x1234ABCD), bswap64(0xFF000000000000AAll));
 
    int x = 42,
        *a = &x,