Commit de7c5ea1026db1c32fac522c71e9d5c57de6ed14 | zig

author	Andrew Kelley <andrew@ziglang.org> 2015-12-15 02:58:01-07:00
committer	Andrew Kelley <andrew@ziglang.org> 2015-12-15 02:58:01-07:00
log	de7c5ea1026db1c32fac522c71e9d5c57de6ed14
tree	ab2f6b30f92f9ec30773b66fca369d8d41380627
parent	1f48b626a1cef1168d23654f5a9f21ed2196738e

1 files changed, 8 insertions(+), 2 deletions(-)

src/codegen.cpp+8-2

 @@ -292,10 +292,16 @@ static LLVMValueRef gen_cast_expr(CodeGen *g, AstNode *node) {
                 if (actual_type->data.integral.is_signed && wanted_type->data.integral.is_signed) {
                     return LLVMBuildSExt(g->builder, expr_val, wanted_type->type_ref, "");
                 } else {
-                    zig_panic("TODO gen_cast_expr sign mismatch");
+                    zig_panic("TODO gen_cast_expr widen unsigned");
                 }
             } else {
-                zig_panic("TODO gen_cast_expr");
+                assert(actual_type->size_in_bits > wanted_type->size_in_bits);
+                if (actual_type->data.integral.is_signed && wanted_type->data.integral.is_signed) {
+                    return LLVMBuildTrunc(g->builder, expr_val, wanted_type->type_ref, "");
+                } else {
+                    zig_panic("TODO gen_cast_expr shorten unsigned");
+                }
             }
         case CastOpArrayToString:
             {