Implement __aeabi_{f,d}rsub.

Summary: Implement the missing ARM EABI functions _aeabi_frsub and __aeabi_drsub.

Reviewers: rengolin, compnerd

Subscribers: pirama, srhines, danalbert, aemerson, llvm-commits

Differential Revision: http://reviews.llvm.org/D12088

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@245321 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 94 insertions, 0 deletions

diff --git a/test/builtins/Unit/arm/aeabi_drsub_test.c b/test/builtins/Unit/arm/aeabi_drsub_test.c
new file mode 100644
index 000000000..7d867ef2c
--- /dev/null
+++ b/test/builtins/Unit/arm/aeabi_drsub_test.c
@@ -0,0 +1,47 @@
+//===-- aeabi_drsub.c - Test __aeabi_drsub --------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __aeabi_drsub for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+
+#if __arm__
+extern __attribute__((pcs("aapcs"))) double __aeabi_drsub(double a, double b);
+
+int test__aeabi_drsub(double a, double b, double expected)
+{
+    double actual = __aeabi_drsub(a, b);
+    if (actual != expected)
+        printf("error in __aeabi_drsub(%f, %f) = %f, expected %f\n",
+               a, b, actual, expected);
+    return actual != expected;
+}
+#endif
+
+int main()
+{
+#if __arm__
+    if (test__aeabi_drsub(1.0, 1.0, 0.0))
+        return 1;
+    if (test__aeabi_drsub(1234.567, 765.4321, -469.134900))
+        return 1;
+    if (test__aeabi_drsub(-123.0, -678.0, -555.0))
+        return 1;
+    if (test__aeabi_drsub(0.0, -0.0, 0.0))
+        return 1;
+#else
+    printf("skipped\n");
+#endif
+    return 0;
+}
diff --git a/test/builtins/Unit/arm/aeabi_frsub_test.c b/test/builtins/Unit/arm/aeabi_frsub_test.c
new file mode 100644
index 000000000..b8b21b96e
--- /dev/null
+++ b/test/builtins/Unit/arm/aeabi_frsub_test.c
@@ -0,0 +1,47 @@
+//===-- aeabi_frsub.c - Test __aeabi_frsub --------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __aeabi_frsub for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+
+#if __arm__
+extern __attribute__((pcs("aapcs"))) float __aeabi_frsub(float a, float b);
+
+int test__aeabi_frsub(float a, float b, float expected)
+{
+    float actual = __aeabi_frsub(a, b);
+    if (actual != expected)
+        printf("error in __aeabi_frsub(%f, %f) = %f, expected %f\n",
+               a, b, actual, expected);
+    return actual != expected;
+}
+#endif
+
+int main()
+{
+#if __arm__
+    if (test__aeabi_frsub(1.0, 1.0, 0.0))
+        return 1;
+    if (test__aeabi_frsub(1234.567, 765.4321, -469.134900))
+        return 1;
+    if (test__aeabi_frsub(-123.0, -678.0, -555.0))
+        return 1;
+    if (test__aeabi_frsub(0.0, -0.0, 0.0))
+        return 1;
+#else
+    printf("skipped\n");
+#endif
+    return 0;
+}