Vendor import of clang trunk r130700:

http://llvm.org/svn/llvm-project/cfe/trunk@130700

1 files changed, 17 insertions, 0 deletions

diff --git a/test/Sema/uninit-variables-vectors.c b/test/Sema/uninit-variables-vectors.c
new file mode 100644
index 0000000..10a8ecc
--- /dev/null
+++ b/test/Sema/uninit-variables-vectors.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fsyntax-only -Wuninitialized -fsyntax-only %s -verify
+
+typedef int __v4si __attribute__((__vector_size__(16)));
+typedef float __m128 __attribute__((__vector_size__(16)));
+__m128 _mm_xor_ps(__m128 a, __m128 b);
+__m128 _mm_loadu_ps(const float *p);
+
+void test1(float *input) {
+  __m128 x, y, z, w, X; // expected-note {{variable 'x' is declared here}} expected-note {{variable 'y' is declared here}} expected-note {{variable 'w' is declared here}}  expected-note {{variable 'z' is declared here}}
+  x = _mm_xor_ps(x,x); // expected-warning {{variable 'x' is uninitialized when used here}}
+  y = _mm_xor_ps(y,y); // expected-warning {{variable 'y' is uninitialized when used here}}
+  z = _mm_xor_ps(z,z); // expected-warning {{variable 'z' is uninitialized when used here}}
+  w = _mm_xor_ps(w,w); // expected-warning {{variable 'w' is uninitialized when used here}}
+  X = _mm_loadu_ps(&input[0]);
+  X = _mm_xor_ps(X,X); // no-warning
+}
+