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the verifier shouldn't modify the IR.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85722 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-11-01 18:11:50 +00:00
parent 076124ef26
commit 4a7642ec9c
5 changed files with 20 additions and 12 deletions
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15
lib/VMCore/Constants.cpp
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@@ -160,6 +160,21 @@ bool Constant::canTrap() const {
}
}
/// isConstantUsed - Return true if the constant has users other than constant
/// exprs and other dangling things.
bool Constant::isConstantUsed() const {
for (use_const_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
const Constant *UC = dyn_cast<Constant>(*UI);
if (UC == 0 || isa<GlobalValue>(UC))
return true;
if (UC->isConstantUsed())
return true;
}
return false;
}
/// getRelocationInfo - This method classifies the entry according to
/// whether or not it may generate a relocation entry. This must be