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It turns out that "align 1" and unaligned are different. Add a bias to the

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alignment attribute such that 0 means unaligned.

This will probably require a rebuild of llvm-gcc because of the change to
Attributes.h. If you see many test failures on "make check", please rebuild
your llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61030 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2008-12-15 07:29:55 +00:00
parent d17c030276
commit 382da62ec2
4 changed files with 14 additions and 5 deletions
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3
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -128,7 +128,8 @@ static void WriteAttributeTable(const ValueEnumerator &VE,
// 5-bit log2 encoded value. Shift the bits above the alignment up by
// 11 bits.
uint64_t FauxAttr = PAWI.Attrs & 0xffff;
FauxAttr |= (1ull<<16)<<((PAWI.Attrs & Attribute::Alignment) >> 16);
if (PAWI.Attrs & Attribute::Alignment)
FauxAttr |= (1ull<<16)<<(((PAWI.Attrs & Attribute::Alignment)-1) >> 16);
FauxAttr |= (PAWI.Attrs & (0x3FFull << 21)) << 11;
Record.push_back(FauxAttr);