obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 77 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/sse2-mmx.c b/gcc/testsuite/gcc.target/i386/sse2-mmx.c
new file mode 100644
index 000000000..fb226a8e8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/sse2-mmx.c
@@ -0,0 +1,77 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -msse2" } */
+/* { dg-require-effective-target sse2 } */
+
+#include "sse2-check.h"
+
+#include <mmintrin.h>
+
+#define N 4
+
+unsigned long long a[N], b[N], result[N];
+
+unsigned long long check[N] =
+  { 0x101010101010100full,
+    0x1010101010101010ull,
+    0x1010101010101010ull,
+    0x1010101010101010ull };
+
+__m64
+unsigned_add3 (const __m64 * a, const __m64 * b,
+	       __m64 * result, unsigned int count)
+{
+  __m64 _a, _b, one, sum, carry, onesCarry;
+
+  unsigned int i;
+
+  carry = _mm_setzero_si64 ();
+
+  one = _mm_cmpeq_pi8 (carry, carry);
+  one = _mm_sub_si64 (carry, one);
+
+  for (i = 0; i < count; i++)
+    {
+      _a = a[i];
+      _b = b[i];
+
+      sum = _mm_add_si64 (_a, _b);
+      sum = _mm_add_si64 (sum, carry);
+
+      result[i] = sum;
+
+      onesCarry = _mm_and_si64 (_mm_xor_si64 (_a, _b), carry);
+      onesCarry = _mm_or_si64 (_mm_and_si64 (_a, _b), onesCarry);
+      onesCarry = _mm_and_si64 (onesCarry, one);
+
+      _a = _mm_srli_si64 (_a, 1);
+      _b = _mm_srli_si64 (_b, 1);
+
+      carry = _mm_add_si64 (_mm_add_si64 (_a, _b), onesCarry);
+      carry = _mm_srli_si64 (carry, 63);
+    }
+
+  return carry;
+}
+
+void __attribute__((noinline))
+sse2_test (void)
+{
+  unsigned long long carry;
+  int i;
+
+  /* Really long numbers.  */
+  a[3] = a[2] = a[1] = a[0] = 0xd3d3d3d3d3d3d3d3ull;
+  b[3] = b[2] = b[1] = b[0] = 0x3c3c3c3c3c3c3c3cull;
+
+  carry = (unsigned long long) unsigned_add3
+    ((__m64 *)a, (__m64 *)b, (__m64 *)result, N);
+
+  _mm_empty ();
+
+  if (carry != 1)
+    abort ();
+
+  for (i = 0; i < N; i++)
+    if (result [i] != check[i])
+      abort ();
+}