[gcc-4.9] Backport fix for PR62040 and PR62262

Backport two patches from upstream gcc 4.9 branch that fix PR62040 and PR62262

Change-Id: If4f557a650e00261b9bc83e008eb63b13ca798cb

2 files changed, 41 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62040.c b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62040.c
new file mode 100644
index 000000000..cfb4979f8
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62040.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-g -Os" } */
+
+#include "arm_neon.h"
+
+extern void bar (int32x4_t);
+
+void
+foo ()
+{
+  int32x4x4_t rows;
+  uint64x2x2_t row01;
+
+  row01.val[0] = vreinterpretq_u64_s32 (rows.val[0]);
+  row01.val[1] = vreinterpretq_u64_s32 (rows.val[1]);
+  uint64x1_t row3l = vget_low_u64 (row01.val[0]);
+  row01.val[0] = vcombine_u64 (vget_low_u64 (row01.val[1]), row3l);
+  int32x4_t xxx = vreinterpretq_s32_u64 (row01.val[0]);
+  int32x4_t out = vtrn1q_s32 (xxx, xxx);
+  bar (out);
+}
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c
new file mode 100644
index 000000000..5bf90bf7f
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fprofile-use" } */
+
+static inline int CLZ(int mask) {
+   return mask ? __builtin_clz(mask) : 32;
+}
+
+int foo(int value)
+{
+    if (value == 0)
+        return 0;
+
+    int bias = CLZ(value);
+    value >>= bias;
+    int zeros = CLZ(value << 1);
+    value <<= zeros;
+
+    int packed = (unsigned)(value << 9) >> 9;
+    return packed;
+}