intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 45 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/builtins/fixunssfdi.c b/contrib/libs/cxxsupp/builtins/fixunssfdi.c
new file mode 100644
index 00000000000..f8ebab854f9
--- /dev/null
+++ b/contrib/libs/cxxsupp/builtins/fixunssfdi.c
@@ -0,0 +1,45 @@
+/* ===-- fixunssfdi.c - Implement __fixunssfdi -----------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#define SINGLE_PRECISION
+#include "fp_lib.h"
+
+ARM_EABI_FNALIAS(f2ulz, fixunssfdi)
+
+#ifndef __SOFT_FP__
+/* Support for systems that have hardware floating-point; can set the invalid
+ * flag as a side-effect of computation.
+ */
+
+COMPILER_RT_ABI du_int
+__fixunssfdi(float a)
+{
+    if (a <= 0.0f) return 0;
+    double da = a;
+    su_int high = da / 4294967296.f;               /* da / 0x1p32f; */
+    su_int low = da - (double)high * 4294967296.f; /* high * 0x1p32f; */
+    return ((du_int)high << 32) | low;
+}
+
+#else
+/* Support for systems that don't have hardware floating-point; there are no
+ * flags to set, and we don't want to code-gen to an unknown soft-float
+ * implementation.
+ */
+
+typedef du_int fixuint_t;
+#include "fp_fixuint_impl.inc"
+
+COMPILER_RT_ABI du_int
+__fixunssfdi(fp_t a) {
+    return __fixuint(a);
+}
+
+#endif