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[APInt] Add PR40897 test case

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In reality APInt::getBitsNeeded(INT_MIN, base) cases require one less bit than is returned

llvm-svn: 362301
This commit is contained in:
Simon Pilgrim 2019-06-01 14:58:36 +00:00
parent a81091b5a1
commit c219588067
1 changed files with 3 additions and 0 deletions
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3
unittests/ADT/APIntTest.cpp
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@ -1262,6 +1262,9 @@ TEST(APIntTest, StringBitsNeeded10) {
EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
// TODO: INT_MIN cases need 1 less bit (PR40897)
EXPECT_EQ(9U, APInt::getBitsNeeded("-128", 10));
} }
TEST(APIntTest, StringBitsNeeded16) { TEST(APIntTest, StringBitsNeeded16) {