[compiler-rt] Disable tests for unavailable builtins

[ahatanak]

The builtins __fixunstfdi and __multc3 may be removed by the
preprocessor depending on configuration flags. When this happens, the
corresponding tests fail at link time due to missing definitions.

Disable these tests when the builtins are not available.

Also remove the XFAILs for aarch64 windows. As this test now became a
no-op on platforms that lack CRT_HAS_128BIT or CRT_HAS_F128 (aarch64
windows lacks the latter), it no longer fails.

This reapplies e9e166e and 6567070 after fixing declarations of
the builtins in the tests in b542509.

rdar://159705803
rdar://159705705

Co-authored-by: Martin Storsjö martin@martin.st

[github-actions]

⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

You can test this locally with the following command:

git-clang-format --diff origin/main HEAD --extensions c -- compiler-rt/test/builtins/Unit/fixunstfdi_test.c compiler-rt/test/builtins/Unit/multc3_test.c

⚠️
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing origin/main to the base branch/commit you want to compare against.
⚠️

View the diff from clang-format here.

diff --git a/compiler-rt/test/builtins/Unit/fixunstfdi_test.c b/compiler-rt/test/builtins/Unit/fixunstfdi_test.c
index 526ba5ca8..27b69d17c 100644
--- a/compiler-rt/test/builtins/Unit/fixunstfdi_test.c
+++ b/compiler-rt/test/builtins/Unit/fixunstfdi_test.c
@@ -1,13 +1,13 @@
 // RUN: %clang_builtins %s %librt -o %t && %run %t
 // REQUIRES: librt_has_fixunstfdi
 
-#include <stdio.h>
 #include "int_lib.h"
+#include <stdio.h>
 
 #if defined(CRT_HAS_TF_MODE)
 
-#define QUAD_PRECISION
-#include "fp_lib.h"
+#  define QUAD_PRECISION
+#  include "fp_lib.h"
 
 // Returns: convert a to a unsigned long long, rounding toward zero.
 //          Negative values all become zero.
@@ -37,77 +37,77 @@ char assumption_3[sizeof(fp_t)*CHAR_BIT == 128] = {0};
 int main()
 {
 #if defined(CRT_HAS_TF_MODE)
-    if (test__fixunstfdi(0.0, 0))
-        return 1;
-
-    if (test__fixunstfdi(0.5, 0))
-        return 1;
-    if (test__fixunstfdi(0.99, 0))
-        return 1;
-    if (test__fixunstfdi(1.0, 1))
-        return 1;
-    if (test__fixunstfdi(1.5, 1))
-        return 1;
-    if (test__fixunstfdi(1.99, 1))
-        return 1;
-    if (test__fixunstfdi(2.0, 2))
-        return 1;
-    if (test__fixunstfdi(2.01, 2))
-        return 1;
-    if (test__fixunstfdi(-0.5, 0))
-        return 1;
-    if (test__fixunstfdi(-0.99, 0))
-        return 1;
-    if (test__fixunstfdi(-1.0, 0))
-        return 1;
-    if (test__fixunstfdi(-1.5, 0))
-        return 1;
-    if (test__fixunstfdi(-1.99, 0))
-        return 1;
-    if (test__fixunstfdi(-2.0, 0))
-        return 1;
-    if (test__fixunstfdi(-2.01, 0))
-        return 1;
-
-    if (test__fixunstfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
-        return 1;
-    if (test__fixunstfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
-        return 1;
-
-    if (test__fixunstfdi(-0x1.FFFFFEp+62, 0))
-        return 1;
-    if (test__fixunstfdi(-0x1.FFFFFCp+62, 0))
-        return 1;
-
-    if (test__fixunstfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
-        return 1;
-    if (test__fixunstfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
-        return 1;
-
-    if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
-        return 1;
-    if (test__fixunstfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
-        return 1;
-
-    if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
-        return 1;
-    if (test__fixunstfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
-        return 1;
-    if (test__fixunstfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
-        return 1;
-    if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
-        return 1;
-    if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
-        return 1;
-    if (test__fixunstfdi(0x1.p+64L, 0xFFFFFFFFFFFFFFFFLL))
-        return 1;
-
-    if (test__fixunstfdi(-0x1.0000000000000000p+63L, 0))
-        return 1;
-    if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
-        return 1;
-    if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
-        return 1;
+  if (test__fixunstfdi(0.0, 0))
+    return 1;
+
+  if (test__fixunstfdi(0.5, 0))
+    return 1;
+  if (test__fixunstfdi(0.99, 0))
+    return 1;
+  if (test__fixunstfdi(1.0, 1))
+    return 1;
+  if (test__fixunstfdi(1.5, 1))
+    return 1;
+  if (test__fixunstfdi(1.99, 1))
+    return 1;
+  if (test__fixunstfdi(2.0, 2))
+    return 1;
+  if (test__fixunstfdi(2.01, 2))
+    return 1;
+  if (test__fixunstfdi(-0.5, 0))
+    return 1;
+  if (test__fixunstfdi(-0.99, 0))
+    return 1;
+  if (test__fixunstfdi(-1.0, 0))
+    return 1;
+  if (test__fixunstfdi(-1.5, 0))
+    return 1;
+  if (test__fixunstfdi(-1.99, 0))
+    return 1;
+  if (test__fixunstfdi(-2.0, 0))
+    return 1;
+  if (test__fixunstfdi(-2.01, 0))
+    return 1;
+
+  if (test__fixunstfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
+    return 1;
+  if (test__fixunstfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
+    return 1;
+
+  if (test__fixunstfdi(-0x1.FFFFFEp+62, 0))
+    return 1;
+  if (test__fixunstfdi(-0x1.FFFFFCp+62, 0))
+    return 1;
+
+  if (test__fixunstfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
+    return 1;
+  if (test__fixunstfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
+    return 1;
+
+  if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
+    return 1;
+  if (test__fixunstfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
+    return 1;
+
+  if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
+    return 1;
+  if (test__fixunstfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
+    return 1;
+  if (test__fixunstfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
+    return 1;
+  if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
+    return 1;
+  if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
+    return 1;
+  if (test__fixunstfdi(0x1.p+64L, 0xFFFFFFFFFFFFFFFFLL))
+    return 1;
+
+  if (test__fixunstfdi(-0x1.0000000000000000p+63L, 0))
+    return 1;
+  if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
+    return 1;
+  if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
+    return 1;
 
 #else
     printf("skipped\n");
diff --git a/compiler-rt/test/builtins/Unit/multc3_test.c b/compiler-rt/test/builtins/Unit/multc3_test.c
index 18561cc34..f5d12431f 100644
--- a/compiler-rt/test/builtins/Unit/multc3_test.c
+++ b/compiler-rt/test/builtins/Unit/multc3_test.c
@@ -1,16 +1,16 @@
 // RUN: %clang_builtins %s %librt -o %t && %run %t
 // REQUIRES: librt_has_multc3
 
-#include <stdio.h>
 #include "int_lib.h"
+#include <stdio.h>
 
 #if defined(CRT_HAS_128BIT) && defined(CRT_HAS_F128)
 
-#define QUAD_PRECISION
-#include "fp_lib.h"
+#  define QUAD_PRECISION
+#  include "fp_lib.h"
 
-#include <math.h>
-#include <complex.h>
+#  include <math.h>
+#  include <complex.h>
 
 // Returns: the product of a + ib and c + id
 
@@ -351,16 +351,14 @@ fp_t x[][2] =
 int main()
 {
 #if defined(CRT_HAS_128BIT) && defined(CRT_HAS_F128)
-    const unsigned N = sizeof(x) / sizeof(x[0]);
-    unsigned i, j;
-    for (i = 0; i < N; ++i)
-    {
-        for (j = 0; j < N; ++j)
-        {
-            if (test__multc3(x[i][0], x[i][1], x[j][0], x[j][1]))
-                return 1;
-        }
+  const unsigned N = sizeof(x) / sizeof(x[0]);
+  unsigned i, j;
+  for (i = 0; i < N; ++i) {
+    for (j = 0; j < N; ++j) {
+      if (test__multc3(x[i][0], x[i][1], x[j][0], x[j][1]))
+        return 1;
     }
+  }
 #else
     printf("skipped\n");
 #endif