[llvm-bugs] [Bug 35156] New: IR verification failed

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Oct 31 18:36:15 PDT 2017


            Bug ID: 35156
           Summary: IR verification failed
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Clang Compiler Support
          Assignee: unassignedclangbugs at nondot.org
          Reporter: evstupac at gmail.com
                CC: llvm-bugs at lists.llvm.org

Most likely related to https://bugs.llvm.org/show_bug.cgi?id=35152

Compilation of the following test:

void foo(); 
void bar(); 

int main () 
#pragma omp parallel 
    try { 
    catch (int t) { 
#pragma omp critical 
  return 0; 

clang -fopenmp --target=x86_64-pc-windows-msvc t.cpp -c

Result in:

Instruction does not dominate all uses!
  %2 = catchpad within %1 [%rtti.TypeDescriptor2* @"\01??_R0H at 8", i32 0, i32*
  %0 = call i32 @__kmpc_global_thread_num(%ident_t* @0) [ "funclet"(token %2) ]
fatal error: error in backend: Broken function found, compilation aborted!

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