[llvm] Deprecate llvm::count{Leading,Trailing}{Zeros,Ones} and llvm::countPopulation

llvm/include/llvm/ADT/bit.h now has equivalent functions
forward-ported from C++20.

Differential Revision: https://reviews.llvm.org/D143837

1 files changed, 0 insertions, 67 deletions

diff --git a/llvm/unittests/Support/MathExtrasTest.cpp b/llvm/unittests/Support/MathExtrasTest.cpp
index d45197a..db667bf 100644
--- a/llvm/unittests/Support/MathExtrasTest.cpp
+++ b/llvm/unittests/Support/MathExtrasTest.cpp
@@ -13,58 +13,6 @@ using namespace llvm;
 
 namespace {
 
-TEST(MathExtras, countTrailingZeros) {
-  uint8_t Z8 = 0;
-  uint16_t Z16 = 0;
-  uint32_t Z32 = 0;
-  uint64_t Z64 = 0;
-  EXPECT_EQ(8u, countTrailingZeros(Z8));
-  EXPECT_EQ(16u, countTrailingZeros(Z16));
-  EXPECT_EQ(32u, countTrailingZeros(Z32));
-  EXPECT_EQ(64u, countTrailingZeros(Z64));
-
-  uint8_t NZ8 = 42;
-  uint16_t NZ16 = 42;
-  uint32_t NZ32 = 42;
-  uint64_t NZ64 = 42;
-  EXPECT_EQ(1u, countTrailingZeros(NZ8));
-  EXPECT_EQ(1u, countTrailingZeros(NZ16));
-  EXPECT_EQ(1u, countTrailingZeros(NZ32));
-  EXPECT_EQ(1u, countTrailingZeros(NZ64));
-}
-
-TEST(MathExtras, countLeadingZeros) {
-  uint8_t Z8 = 0;
-  uint16_t Z16 = 0;
-  uint32_t Z32 = 0;
-  uint64_t Z64 = 0;
-  EXPECT_EQ(8u, countLeadingZeros(Z8));
-  EXPECT_EQ(16u, countLeadingZeros(Z16));
-  EXPECT_EQ(32u, countLeadingZeros(Z32));
-  EXPECT_EQ(64u, countLeadingZeros(Z64));
-
-  uint8_t NZ8 = 42;
-  uint16_t NZ16 = 42;
-  uint32_t NZ32 = 42;
-  uint64_t NZ64 = 42;
-  EXPECT_EQ(2u, countLeadingZeros(NZ8));
-  EXPECT_EQ(10u, countLeadingZeros(NZ16));
-  EXPECT_EQ(26u, countLeadingZeros(NZ32));
-  EXPECT_EQ(58u, countLeadingZeros(NZ64));
-
-  EXPECT_EQ(8u, countLeadingZeros(0x00F000FFu));
-  EXPECT_EQ(8u, countLeadingZeros(0x00F12345u));
-  for (unsigned i = 0; i <= 30; ++i) {
-    EXPECT_EQ(31 - i, countLeadingZeros(1u << i));
-  }
-
-  EXPECT_EQ(8u, countLeadingZeros(0x00F1234500F12345ULL));
-  EXPECT_EQ(1u, countLeadingZeros(1ULL << 62));
-  for (unsigned i = 0; i <= 62; ++i) {
-    EXPECT_EQ(63 - i, countLeadingZeros(1ULL << i));
-  }
-}
-
 TEST(MathExtras, onesMask) {
   EXPECT_EQ(0U, maskLeadingOnes<uint8_t>(0));
   EXPECT_EQ(0U, maskTrailingOnes<uint8_t>(0));
@@ -220,21 +168,6 @@ TEST(MathExtras, CTLog2) {
   EXPECT_EQ(CTLog2<1ULL << 15>(), 15U);
 }
 
-TEST(MathExtras, countLeadingOnes) {
-  for (int i = 30; i >= 0; --i) {
-    // Start with all ones and unset some bit.
-    EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i)));
-  }
-  for (int i = 62; i >= 0; --i) {
-    // Start with all ones and unset some bit.
-    EXPECT_EQ(63u - i, countLeadingOnes(0xFFFFFFFFFFFFFFFFULL ^ (1LL << i)));
-  }
-  for (int i = 30; i >= 0; --i) {
-    // Start with all ones and unset some bit.
-    EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i)));
-  }
-}
-
 TEST(MathExtras, FloatBits) {
   static const float kValue = 5632.34f;
   EXPECT_FLOAT_EQ(kValue, BitsToFloat(FloatToBits(kValue)));