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Revert r300811 "[APInt] Add back the asserts that check that the APInt shift methods aren't called with values larger than BitWidth."

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300813 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2017-04-20 02:46:21 +00:00
parent be583f25e0
commit b3443b3378
2 changed files with 4 additions and 6 deletions
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6
include/llvm/ADT/APInt.h
View File

@ -847,9 +847,8 @@ public:
///
/// \returns *this after shifting left by ShiftAmt
APInt &operator<<=(unsigned ShiftAmt) {
assert(ShiftAmt <= BitWidth && "Invalid shift amount");
if (isSingleWord()) {
if (ShiftAmt == BitWidth)
if (ShiftAmt >= BitWidth)
VAL = 0;
else
VAL <<= ShiftAmt;
@ -894,9 +893,8 @@ public:
/// Logical right-shift this APInt by ShiftAmt in place.
void lshrInPlace(unsigned ShiftAmt) {
assert(ShiftAmt <= BitWidth && "Invalid shift amount");
if (isSingleWord()) {
if (ShiftAmt == BitWidth)
if (ShiftAmt >= BitWidth)
VAL = 0;
else
VAL >>= ShiftAmt;

4
unittests/ADT/APIntTest.cpp
View File

@ -2021,7 +2021,7 @@ TEST(APIntTest, LogicalRightShift) {
// Ensure we handle large shifts of multi-word.
const APInt neg_one(128, static_cast<uint64_t>(-1), true);
EXPECT_EQ(0, neg_one.lshr(128));
EXPECT_EQ(0, neg_one.lshr(257));
}
TEST(APIntTest, LeftShift) {
@ -2054,7 +2054,7 @@ TEST(APIntTest, LeftShift) {
// Ensure we handle large shifts of multi-word.
const APInt neg_one(128, static_cast<uint64_t>(-1), true);
EXPECT_EQ(0, neg_one.shl(128));
EXPECT_EQ(0, neg_one.shl(257));
}
} // end anonymous namespace