https://bugs.llvm.org/show_bug.cgi?id=50370
Bug ID: 50370
Summary: Timeout in llvm-opt-fuzzer--x86_64-instcombine
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: lebedev...@gmail.com, llvm-bugs@lists.llvm.org,
nikita....@gmail.com, spatel+l...@rotateright.com
Reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34395
@g = extern_weak global i32
define void @function(i32 %x) {
entry:
%xor = xor i32 %x, 1
%or4 = or i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 1),
65536
%B6 = ashr i32 65536, %or4
%B15 = srem i32 %B6, %xor
%B20 = sdiv i32 %or4, 2147483647
%B22 = add i32 %B15, %B20
%B14 = srem i32 %B6, %B22
%B12 = add i32 %B15, %B6
%B8 = shl i32 %B20, %B14
%B2 = xor i32 %B12, %B8
%B3 = or i32 %B12, undef
%B = xor i32 %B2, %B3
store i32 %B, i32* undef, align 4
ret void
}
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