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MIR Serialization: Report an error when machine functions have the same name.

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This commit reports an error when the MIR parser encounters a machine
function with the name that is the same as the name of a different
machine function.

Reviewers: Duncan P. N. Exon Smith

Differential Revision: http://reviews.llvm.org/D10130


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239774 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz 2015-06-15 22:23:23 +00:00
parent 9784231221
commit 185789e9a0
2 changed files with 13 additions and 0 deletions
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3
lib/CodeGen/MIRParser/MIRParser.cpp
View File

@ -156,6 +156,9 @@ bool MIRParserImpl::parseMachineFunction(yaml::Input &In) {
if (In.error())
return true;
auto FunctionName = MF->Name;
if (Functions.find(FunctionName) != Functions.end())
return error(Twine("redefinition of machine function '") + FunctionName +
"'");
Functions.insert(std::make_pair(FunctionName, std::move(MF)));
return false;
}

10
test/CodeGen/MIR/machine-function-redefinition-error.mir Normal file
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@ -0,0 +1,10 @@
# RUN: not llc -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
# This test ensures that the machine function errors are reported correctly.
---
name: foo
...
---
# CHECK: redefinition of machine function 'foo'
name: foo
...