derek.holloway
7502bf64a4
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25 lines
544 B
C++
25 lines
544 B
C++
// RUN: %clangxx_msan -O0 %s -o %t && %run %t
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// RUN: %clangxx_msan -DPOSITIVE -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// REQUIRES: x86_64-target-arch
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#include <emmintrin.h>
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int to_int(double &v) {
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__m128d t = _mm_set_sd(v);
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int x = _mm_cvtsd_si32(t);
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return x;
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: #{{.*}} in to_int{{.*}}vector_cvt.cpp:[[@LINE-3]]
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}
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int main() {
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#ifdef POSITIVE
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double v;
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#else
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double v = 1.1;
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#endif
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double* volatile p = &v;
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int x = to_int(*p);
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return !x;
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}
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