Fix test-test-set (#2384)

5d71e881 · Li-Wen Chang · Tianqi Chen · 083e0f33 · 5d71e881
Commit 5d71e881 authored Jan 07, 2019 by Li-Wen Chang Committed by Tianqi Chen Jan 07, 2019
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src/codegen/llvm/llvm_common.cc
+2 -2

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--- a/src/codegen/llvm/llvm_common.cc
+++ b/src/codegen/llvm/llvm_common.cc
@@ -13,7 +13,7 @@ namespace codegen {

 struct LLVMEnv {
  std::mutex mu;
-  bool all_initialized{false};
+  volatile bool all_initialized{false};

  static LLVMEnv* Global() {
    static LLVMEnv inst;
@@ -26,12 +26,12 @@ void InitializeLLVM() {
  if (!e->all_initialized) {
    std::lock_guard<std::mutex> lock(e->mu);
    if (!e->all_initialized) {
-      e->all_initialized = true;
      llvm::InitializeAllTargetInfos();
      llvm::InitializeAllTargets();
      llvm::InitializeAllTargetMCs();
      llvm::InitializeAllAsmParsers();
      llvm::InitializeAllAsmPrinters();
+      e->all_initialized = true;
    }
  }
 }