File: uninit-variables-vectors.c

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (17 lines) | stat: -rw-r--r-- 988 bytes parent folder | download | duplicates (32) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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
}