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MIR Parser: Report an error when a virtual register is redefined.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243695 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-07-30 21:54:10 +00:00
parent 8a6197a968
commit 2bc631660b
3 changed files with 34 additions and 4 deletions
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8
lib/CodeGen/MIRParser/MIRParser.cpp
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@@ -414,9 +414,11 @@ bool MIRParserImpl::initializeRegisterInfo(MachineFunction &MF,
Twine("use of undefined register class '") +
VReg.Class.Value + "'");
unsigned Reg = RegInfo.createVirtualRegister(RC);
// TODO: Report an error when the same virtual register with the same ID is
// redefined.
PFS.VirtualRegisterSlots.insert(std::make_pair(VReg.ID, Reg));
if (!PFS.VirtualRegisterSlots.insert(std::make_pair(VReg.ID.Value, Reg))
.second)
return error(VReg.ID.SourceRange.Start,
Twine("redefinition of virtual register '%") +
Twine(VReg.ID.Value) + "'");
if (!VReg.PreferredRegister.Value.empty()) {
unsigned PreferredReg = 0;
if (parseNamedRegisterReference(PreferredReg, SM, MF,