3.9.1 merge - Shared static initialization does not work with optimizations

[nenadv]

This simple test

#include <stdio.h>
#include <stdint.h>
#include <upc.h>

shared uint8_t x8_2F = 0x2F;

int main() {
  printf ("%d\n", x8_2F);
}

fails if compiled with optimizations higher then 0.

[swatanabe]

AMDG

On 03/20/2017 02:18 PM, Nenad Vukicevic wrote:

This simple test

#include <stdio.h>
#include <stdint.h>
#include <upc.h>

shared uint8_t x8_2F = 0x2F;

int main() {
  printf ("%d\n", x8_2F);
}

fails if compiled with optimizations higher then 0.

The initialization is silently lost, right? Adding the variable to llvm.used should fix the problem.

In Christ, Steven Watanabe

[nenadv]

When optimized, we are missing 'upc_init_array' section that has the shared initialization functions. I checked the IR code and functions are indeed missing.