enzyme/test/Integration/ReverseMode/inactiveglob.cpp

// This should work on LLVM 7, 8, 9, however in CI the version of clang installed on Ubuntu 18.04 cannot load
// a clang plugin properly without segfaulting on exit. This is fine on Ubuntu 20.04 or later LLVM versions...
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O0 %s -S -emit-llvm -o - %loadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O1 %s -S -emit-llvm -o - %loadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O2 %s -S -emit-llvm -o - %loadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O3 %s -S -emit-llvm -o - %loadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O0 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O1 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O2 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 11 ]; then %clang++ -std=c++11 -O3 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O0 %s -S -emit-llvm -o - %newLoadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O1 %s -S -emit-llvm -o - %newLoadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O2 %s -S -emit-llvm -o - %newLoadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O3 %s -S -emit-llvm -o - %newLoadClangEnzyme | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O0 %s -S -emit-llvm -o - %newLoadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O1 %s -S -emit-llvm -o - %newLoadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O2 %s -S -emit-llvm -o - %newLoadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -std=c++11 -O3 %s -S -emit-llvm -o - %newLoadClangEnzyme -mllvm -enzyme-inline=1 -S | %lli - ; fi

#include <stdio.h>
#include <math.h>
#include <assert.h>

#include "../test_utils.h"

double __enzyme_autodiff(void*, ...);

struct Temp {
private:
  __attribute__((enzyme_inactive))
  static double tmp;
public:

__attribute__((noinline))
static void f(bool cond, double a, double *c) {
  if (cond)
    tmp *= a;
  else
    *c *= a;
}

static double get() { return tmp; }
static void set(double v) { tmp = v; }

};

double Temp::tmp = 0;

double test(bool cond, double a) {
  double dat = a;
  Temp::f(cond,  a, &dat);
  return dat;
}

int main(int argc, char** argv) {
  Temp::set(5.5);
  double out = __enzyme_autodiff((void*)test, false, 3.0);
  printf("out=%f\n", out);
  APPROX_EQ(out, 6.0, 1e-10); 
  APPROX_EQ(Temp::get(), 5.5, 1e-10); 
  return 0;
}