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[APInt] Use UINT64_MAX instead of ~0ULL. NFC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296300 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2017-02-26 19:28:48 +00:00
parent d1973fd95b
commit e87a9a6253
2 changed files with 12 additions and 2 deletions
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4
include/llvm/ADT/APInt.h
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@ -406,7 +406,7 @@ public:
/// If this value is smaller than the specified limit, return it, otherwise
/// return the limit value. This causes the value to saturate to the limit.
uint64_t getLimitedValue(uint64_t Limit = ~0ULL) const {
uint64_t getLimitedValue(uint64_t Limit = UINT64_MAX) const {
return (getActiveBits() > 64 || getZExtValue() > Limit) ? Limit
: getZExtValue();
}
@ -523,7 +523,7 @@ public:
unsigned shiftAmt = numBits - hiBitsSet;
// For small values, return quickly
if (numBits <= APINT_BITS_PER_WORD)
return APInt(numBits, ~0ULL << shiftAmt);
return APInt(numBits, UINT64_MAX << shiftAmt);
return getAllOnesValue(numBits).shl(shiftAmt);
}

10
unittests/ADT/APIntTest.cpp
View File

@ -1531,3 +1531,13 @@ TEST(APIntTest, getLowBitsSet) {
EXPECT_EQ(64u, i128lo64.countTrailingOnes());
EXPECT_EQ(64u, i128lo64.countPopulation());
}
TEST(APIntTest, getHighBitsSet) {
APInt i64hi32 = APInt::getHighBitsSet(64, 32);
EXPECT_EQ(32u, i64hi32.countLeadingOnes());
EXPECT_EQ(0u, i64hi32.countLeadingZeros());
EXPECT_EQ(64u, i64hi32.getActiveBits());
EXPECT_EQ(32u, i64hi32.countTrailingZeros());
EXPECT_EQ(0u, i64hi32.countTrailingOnes());
EXPECT_EQ(32u, i64hi32.countPopulation());
}