Express APInt::{s,u}{l,g}e(uint64_t) in terms of APInt::{s,u}{l,g}t(uint64_t). NFC.

This is preparation for http://reviews.llvm.org/D10655: Change APInt comparison with uint64_t.
Some unit tests added also.

llvm-svn: 240626

1 files changed, 38 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/APIntTest.cpp b/llvm/unittests/ADT/APIntTest.cpp
index e4398f0f669..098140c50c6 100644
--- a/llvm/unittests/ADT/APIntTest.cpp
+++ b/llvm/unittests/ADT/APIntTest.cpp
@@ -215,6 +215,44 @@ TEST(APIntTest, i1) {
   }
 }
 
+TEST(APIntTest, compare) {
+  std::array<APInt, 5> testVals{{
+    APInt{16, 2},
+    APInt{16, 1},
+    APInt{16, 0},
+    APInt{16, (uint64_t)-1, true},
+    APInt{16, (uint64_t)-2, true},
+  }};
+
+  for (auto &arg1 : testVals)
+    for (auto &arg2 : testVals) {
+      auto uv1 = arg1.getZExtValue();
+      auto uv2 = arg2.getZExtValue();
+      auto sv1 = arg1.getSExtValue();
+      auto sv2 = arg2.getSExtValue();
+
+      EXPECT_EQ(uv1 <  uv2, arg1.ult(arg2));
+      EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2));
+      EXPECT_EQ(uv1 >  uv2, arg1.ugt(arg2));
+      EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2));
+
+      EXPECT_EQ(sv1 <  sv2, arg1.slt(arg2));
+      EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2));
+      EXPECT_EQ(sv1 >  sv2, arg1.sgt(arg2));
+      EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2));
+
+      EXPECT_EQ(uv1 <  uv2, arg1.ult(uv2));
+      EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2));
+      EXPECT_EQ(uv1 >  uv2, arg1.ugt(uv2));
+      EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2));
+
+      EXPECT_EQ(sv1 <  sv2, arg1.slt(sv2));
+      EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2));
+      EXPECT_EQ(sv1 >  sv2, arg1.sgt(sv2));
+      EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2));
+    }
+}
+
 
 // Tests different div/rem varaints using scheme (a * b + c) / a
 void testDiv(APInt a, APInt b, APInt c) {