MIR Parser: Report an error when a machine function doesn't have a corresponding function.

This commit reports an error when a machine function from a MIR file that contains
LLVM IR can't find a function with the same name in the loaded LLVM IR module.

Reviewers: Duncan P. N. Exon Smith

Differential Revision: http://reviews.llvm.org/D10468

llvm-svn: 239831

1 files changed, 19 insertions, 0 deletions

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
+...