implement float -> unsigned casts

amd64 lacks instruction for this so it has to be implemented with
float -> signed casts. The approach is borrowed from llvm.

1 files changed, 2 insertions, 0 deletions

diff --git a/fold.c b/fold.c
index 30e21d2..5d3c83c 100644
--- a/fold.c
+++ b/fold.c
@@ -387,7 +387,9 @@ foldint(Con *res, int op, int w, Con *cl, Con *cr)
 	case Oextsw: x = (int32_t)l.u;  break;
 	case Oextuw: x = (uint32_t)l.u; break;
 	case Ostosi: x = w ? (int64_t)cl->bits.s : (int32_t)cl->bits.s; break;
+	case Ostoui: x = w ? (uint64_t)cl->bits.s : (uint32_t)cl->bits.s; break;
 	case Odtosi: x = w ? (int64_t)cl->bits.d : (int32_t)cl->bits.d; break;
+	case Odtoui: x = w ? (uint64_t)cl->bits.d : (uint32_t)cl->bits.d; break;
 	case Ocast:
 		x = l.u;
 		if (cl->type == CAddr) {