[AArch64] PR target/69613: Return zero TARGET_SHIFT_TRUNCATION_MASK when…

[AArch64] PR target/69613: Return zero TARGET_SHIFT_TRUNCATION_MASK when SHIFT_COUNT_TRUNCATED is false

	PR target/69613
	* config/aarch64/aarch64.c (aarch64_shift_truncation_mask):
	Return 0 if !SHIFT_COUNT_TRUNCATED.

	* gcc.dg/torture/pr69613.c: New test.

From-SVN: r233744

gcc/ChangeLog

+2016-02-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/69613
+	* config/aarch64/aarch64.c (aarch64_shift_truncation_mask):
+	Return 0 if !SHIFT_COUNT_TRUNCATED.
+
 2016-02-26  Jakub Jelinek  <jakub@redhat.com>
 	    Eric Botcazou  <ebotcazou@adacore.com>
 

gcc/config/aarch64/aarch64.c

@@ -11154,7 +11154,8 @@ static unsigned HOST_WIDE_INT
 aarch64_shift_truncation_mask (machine_mode mode)
 {
   return
-    (aarch64_vector_mode_supported_p (mode)
+    (!SHIFT_COUNT_TRUNCATED
+     || aarch64_vector_mode_supported_p (mode)
      || aarch64_vect_struct_mode_p (mode)) ? 0 : (GET_MODE_BITSIZE (mode) - 1);
 }
 

gcc/testsuite/ChangeLog

+2016-02-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/69613
+	* gcc.dg/torture/pr69613.c: New test.
+
 2016-02-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/69891

gcc/testsuite/gcc.dg/torture/pr69613.c

+/* PR target/69613.  */
+/* { dg-do run { target int128 } } */
+/* { dg-additional-options "-mavx" { target { i?86-*-* x86_64-*-* } } } */
+
+typedef unsigned short u16;
+typedef unsigned short v32u16 __attribute__ ((vector_size (32)));
+typedef unsigned int u32;
+typedef unsigned int v32u32 __attribute__ ((vector_size (32)));
+typedef unsigned long long u64;
+typedef unsigned long long v32u64 __attribute__ ((vector_size (32)));
+typedef unsigned __int128 u128;
+typedef unsigned __int128 v32u128 __attribute__ ((vector_size (32)));
+
+u128 __attribute__ ((noinline, noclone))
+foo (u32 u32_0, u64 u64_1, u128 u128_1, v32u16 v32u16_0, v32u128 v32u128_0,
+     v32u16 v32u16_1, v32u32 v32u32_1, v32u64 v32u64_1, v32u128 v32u128_1)
+{
+  u128 temp = (v32u128_1[0] << ((-u32_0) & 127));
+  u32 t2 = (u32_0 & 127);
+  v32u128_1[0] = (v32u128_1[0] >> t2);
+
+  v32u128_1[0] ^= temp;
+  v32u128_1 |= (v32u128){ v32u128_0[1] };
+
+  return u64_1 + u128_1 + v32u16_0[0] + v32u16_0[1] + v32u16_1[11]
+	 + v32u16_1[12] + v32u16_1[13] + v32u32_1[0] + v32u32_1[1]
+	 + v32u32_1[2] + v32u64_1[1] + v32u64_1[2] + v32u64_1[3] + v32u128_1[0]
+	 + v32u128_1[1];
+}
+
+int
+main ()
+{
+  u128 x
+      = foo (1, 1, 1, (v32u16){ 1, 1, 1 }, (v32u128){ 1 }, (v32u16){ 1, 1, 1 },
+	     (v32u32){ 1 }, (v32u64){ 1, 1, 1 }, (v32u128){ -1 });
+  if (x != 6)
+    __builtin_abort ();
+  return 0;
+}