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-rw-r--r--llvm/lib/CodeGen/MIRParser/MIRParser.cpp3
-rw-r--r--llvm/test/CodeGen/MIR/machine-function-missing-function.mir19
2 files changed, 22 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
index acd3c1130a5..8fe4c838000 100644
--- a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
@@ -173,6 +173,9 @@ bool MIRParserImpl::parseMachineFunction(yaml::Input &In, Module &M,
Functions.insert(std::make_pair(FunctionName, std::move(MF)));
if (NoLLVMIR)
createDummyFunction(FunctionName, M);
+ else if (!M.getFunction(FunctionName))
+ return error(Twine("function '") + FunctionName +
+ "' isn't defined in the provided LLVM IR");
return false;
}
diff --git a/llvm/test/CodeGen/MIR/machine-function-missing-function.mir b/llvm/test/CodeGen/MIR/machine-function-missing-function.mir
new file mode 100644
index 00000000000..eed4142d659
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/machine-function-missing-function.mir
@@ -0,0 +1,19 @@
+# RUN: not llc -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
+# This test ensures that an error is reported when the mir file has LLVM IR and
+# one of the machine functions has a name that doesn't match any function in
+# the LLVM IR.
+
+--- |
+
+ define i32 @foo() {
+ ret i32 0
+ }
+
+...
+---
+name: foo
+...
+---
+# CHECK: function 'faa' isn't defined in the provided LLVM IR
+name: faa
+...
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