unittests/MC/TargetRegistry.cpp

   1 //===- unittests/MC/TargetRegistry.cpp ------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // The target registry code lives in Support, but it relies on linking in all
  10 // LLVM targets. We keep this test with the MC tests, which already do that, to
  11 // keep the SupportTests target small.
  12
  13 #include "llvm/Support/TargetRegistry.h"
  14 #include "llvm/Support/TargetSelect.h"
  15 #include "gtest/gtest.h"
  16
  17 using namespace llvm;
  18
  19 namespace {
  20
  21 TEST(TargetRegistry, TargetHasArchType) {
  22   // Presence of at least one target will be asserted when done with the loop,
  23   // else this would pass by accident if InitializeAllTargetInfos were omitted.
  24   int Count = 0;
  25
  26   llvm::InitializeAllTargetInfos();
  27
  28   for (const Target &T : TargetRegistry::targets()) {
  29     StringRef Name = T.getName();
  30     // There is really no way (at present) to ask a Target whether it targets
  31     // a specific architecture, because the logic for that is buried in a
  32     // predicate.
  33     // We can't ask the predicate "Are you a function that always returns
  34     // false?"
  35     // So given that the cpp backend truly has no target arch, it is skipped.
  36     if (Name != "cpp") {
  37       Triple::ArchType Arch = Triple::getArchTypeForLLVMName(Name);
  38       EXPECT_NE(Arch, Triple::UnknownArch);
  39       ++Count;
  40     }
  41   }
  42   ASSERT_NE(Count, 0);
  43 }
  44
  45 } // end namespace