[llvm-extract] Support extracting basic blocks
Summary:
Currently, there is no way to extract a basic block from a function easily. This patch
extends llvm-extract to extract the specified basic block(s).
Reviewers: loladiro, rafael, bogner
Reviewed By: bogner
Subscribers: hintonda, mgorny, qcolombet, llvm-commits
Differential Revision: https://reviews.llvm.org/D41638
llvm-svn: 323266
diff --git a/llvm/test/Transforms/BlockExtractor/invalid-function.ll b/llvm/test/Transforms/BlockExtractor/invalid-function.ll
new file mode 100644
index 0000000..4044815
--- /dev/null
+++ b/llvm/test/Transforms/BlockExtractor/invalid-function.ll
@@ -0,0 +1,9 @@
+; RUN: echo 'foo bb' > %t
+; RUN: not opt -S -extract-blocks -extract-blocks-file=%t %s 2>&1 | FileCheck %s
+
+; CHECK: Invalid function
+define void @bar() {
+bb:
+ ret void
+}
+