https://llvm.org/bugs/show_bug.cgi?id=30286
Bug ID: 30286
Summary: [AVX-512] KNL bug at -O0
Product: new-bugs
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: babo...@gmail.com
CC: guy.bl...@intel.com, llvm-bugs@lists.llvm.org,
vsevolod.livins...@frtk.ru
Classification: Unclassified
> cat pr.cpp
#include <iostream>
struct S {
unsigned long ul : 25 ;
} s;
int main () {
s.ul = 27833667UL;
bool b = ((bool) !(((bool) s.ul ) && true)) && true;
std::cout << (b ? "FAIL":"PASS") << "\n";
return 0;
}
> clang++ -O0 -o no_opt pr.cpp
> ./no_opt
PASS
> clang++ -O0 -march=knl -o knl_no_opt pr.cpp
>sde -knl -- ./knl_no_opt
FAIL
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