File: vector_cvt.cpp

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (24 lines) | stat: -rw-r--r-- 543 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
// RUN: %clangxx_msan -O0 %s -o %t && %run %t
// RUN: %clangxx_msan -DPOSITIVE -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
// REQUIRES: x86_64-target-arch

#include <emmintrin.h>

int to_int(double v) {
  __m128d t = _mm_set_sd(v);
  int x = _mm_cvtsd_si32(t);
  return x;
  // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
  // CHECK: #{{.*}} in to_int{{.*}}vector_cvt.cpp:[[@LINE-3]]
}

int main() {
#ifdef POSITIVE
  double v;
#else
  double v = 1.1;
#endif
  double* volatile p = &v;
  int x = to_int(*p);
  return !x;
}