clang/unittests/CodeGen/CheckTargetFeaturesTest.cpp

   1 #include "clang/Basic/Builtins.h"
   2 #include "gtest/gtest.h"
   3
   4 using namespace llvm;
   5
   6 // These tests are to Check whether CodeGen::TargetFeatures works correctly.
   7 TEST(CheckTargetFeaturesTest, checkBuiltinFeatures) {
   8   auto doCheck = [](StringRef BuiltinFeatures, StringRef FuncFeatures) {
   9     SmallVector<StringRef, 1> Features;
  10     FuncFeatures.split(Features, ',');
  11     StringMap<bool> SM;
  12     for (StringRef F : Features)
  13       SM.insert(std::make_pair(F, true));
  14     return clang::Builtin::evaluateRequiredTargetFeatures(BuiltinFeatures, SM);
  15   };
  16   // Make sure the basic function ',' and '|' works correctly
  17   ASSERT_FALSE(doCheck("A,B,C,D", "A"));
  18   ASSERT_TRUE(doCheck("A,B,C,D", "A,B,C,D"));
  19   ASSERT_TRUE(doCheck("A|B", "A"));
  20   ASSERT_FALSE(doCheck("A|B", "C"));
  21
  22   // Make sure the ',' has higher priority.
  23   ASSERT_TRUE(doCheck("A|B,C|D", "A"));
  24
  25   // Make sure the parentheses do change the priority of '|'.
  26   ASSERT_FALSE(doCheck("(A|B),(C|D)", "A"));
  27   ASSERT_TRUE(doCheck("(A|B),(C|D)", "A,C"));
  28
  29   // Make sure the combination in parentheses works correctly.
  30   ASSERT_FALSE(doCheck("(A,B|C),D", "A,C"));
  31   ASSERT_FALSE(doCheck("(A,B|C),D", "A,D"));
  32   ASSERT_TRUE(doCheck("(A,B|C),D", "C,D"));
  33   ASSERT_TRUE(doCheck("(A,B|C),D", "A,B,D"));
  34
  35   // Make sure nested parentheses works correctly.
  36   ASSERT_FALSE(doCheck("(A,(B|C)),D", "C,D"));
  37   ASSERT_TRUE(doCheck("(A,(B|C)),D", "A,C,D"));
  38 }