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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41119 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -88,10 +88,14 @@ namespace llvm {
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/// ValueNumberInfo - If the value number definition is undefined (e.g. phi
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/// merge point), it contains ~0u,x. If the value number is not in use, it
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/// contains ~1u,x to indicate that the value # is not used.
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/// def - Instruction # of the definition.
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/// reg - Source reg iff val# is defined by a copy; zero otherwise.
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/// kills - Instruction # of the kills. If a kill is an odd #, it means
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/// the kill is a phi join point.
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struct VNInfo {
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unsigned def; // instruction # of the definition
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unsigned reg; // src reg: non-zero iff val# is defined by a copy
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SmallVector<unsigned, 4> kills; // instruction #s of the kills
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unsigned def;
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unsigned reg;
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SmallVector<unsigned, 4> kills;
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VNInfo() : def(~1U), reg(0) {};
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VNInfo(unsigned d, unsigned r) : def(d), reg(r) {};
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};
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