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ADT: Add a string APSInt constructor.

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This commit moves the APSInt initialization code that's used by
the LLLexer class into a new APSInt constructor that constructs
APSInts from strings.

This change is useful for MIR Serialization, as it would allow
the MILexer class to use the same APSInt initialization as 
LLexer when parsing immediate machine operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240436 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-06-23 18:22:10 +00:00
parent 38e853141d
commit 1c5cf241af
4 changed files with 48 additions and 14 deletions
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19
unittests/ADT/APSIntTest.cpp
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@@ -143,4 +143,23 @@ TEST(APSIntTest, compareValues) {
EXPECT_TRUE(APSInt::compareValues(U(8), S(-7).trunc(32)) > 0);
}
TEST(APSIntTest, FromString) {
EXPECT_EQ(APSInt("1").getExtValue(), 1);
EXPECT_EQ(APSInt("-1").getExtValue(), -1);
EXPECT_EQ(APSInt("0").getExtValue(), 0);
EXPECT_EQ(APSInt("56789").getExtValue(), 56789);
EXPECT_EQ(APSInt("-1234").getExtValue(), -1234);
}
#ifdef GTEST_HAS_DEATH_TEST
#ifndef NDEBUG
TEST(APSIntTest, StringDeath) {
EXPECT_DEATH(APSInt(""), "Invalid string length");
EXPECT_DEATH(APSInt("1a"), "Invalid character in digit string");
}
#endif
#endif
} // end anonymous namespace