28f330fd6f
Summary: Floating point division by zero or even undef does not have undefined behavior and may occur due to optimizations. Fixes https://bugs.llvm.org/show_bug.cgi?id=37523. Reviewers: kcc Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D47085 llvm-svn: 332761
18 lines
441 B
C++
18 lines
441 B
C++
// Regression test for https://bugs.llvm.org/show_bug.cgi?id=37523
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// RUN: %clangxx_msan -O0 %s -o %t && %run %t
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// RUN: %clangxx_msan -O3 %s -o %t && %run %t
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// REQUIRES: x86_64-target-arch
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#include <assert.h>
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#include <emmintrin.h>
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int main() {
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volatile int scale = 5;
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volatile auto zz = _mm_div_ps(_mm_set1_ps(255), _mm_set1_ps(scale));
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assert(zz[0] == 51);
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assert(zz[1] == 51);
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assert(zz[2] == 51);
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assert(zz[3] == 51);
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}
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