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[AlignOf] Add AlignedCharArray and refactor AlignedCharArrayUnion.

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This adds AlignedCharArray<Alignment, Size>. A templated struct that contains
a member named buffer of type char[Size] that is aligned to Alignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171319 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2012-12-31 19:54:45 +00:00
parent 44365353a4
commit 3c6f89aa2e
2 changed files with 107 additions and 74 deletions
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13
unittests/Support/AlignOfTest.cpp
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@ -14,7 +14,6 @@
using namespace llvm;
namespace {
// Disable warnings about questionable type definitions.
// We're testing that even questionable types work with the alignment utilities.
#ifdef _MSC_VER
@ -321,6 +320,16 @@ TEST(AlignOfTest, BasicAlignedArray) {
#ifndef _MSC_VER
EXPECT_EQ(sizeof(V8), sizeof(AlignedCharArrayUnion<V8>));
#endif
}
EXPECT_EQ(1u, (alignOf<AlignedCharArray<1, 1> >()));
EXPECT_EQ(2u, (alignOf<AlignedCharArray<2, 1> >()));
EXPECT_EQ(4u, (alignOf<AlignedCharArray<4, 1> >()));
EXPECT_EQ(8u, (alignOf<AlignedCharArray<8, 1> >()));
EXPECT_EQ(16u, (alignOf<AlignedCharArray<16, 1> >()));
EXPECT_EQ(1u, sizeof(AlignedCharArray<1, 1>));
EXPECT_EQ(7u, sizeof(AlignedCharArray<1, 7>));
EXPECT_EQ(2u, sizeof(AlignedCharArray<2, 2>));
EXPECT_EQ(16u, sizeof(AlignedCharArray<2, 16>));
}
}