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[APInt] Add some procedural APInt::byteSwap unit tests

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rGf0181cc7bac3 added specific tests up to i64, this adds a general loop to test some basic byte moves for larger APInts.
This commit is contained in:
Simon Pilgrim 2020-02-15 11:56:26 +00:00
parent d40763588e
commit 27b3f50fc2
1 changed files with 9 additions and 0 deletions
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9
unittests/ADT/APIntTest.cpp
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@ -1821,6 +1821,15 @@ TEST(APIntTest, byteSwap) {
EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap());
EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap());
EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap());
for (unsigned N : {16, 32, 48, 64, 80, 96, 112, 128, 256, 1024, 1040}) {
for (unsigned I = 0; I < N; I += 8) {
APInt X = APInt::getBitsSet(N, I, I + 8);
APInt Y = APInt::getBitsSet(N, N - I - 8, N - I);
EXPECT_EQ(Y, X.byteSwap());
EXPECT_EQ(X, Y.byteSwap());
}
}
}
TEST(APIntTest, reverseBits) {