BPF: fix libLLVMBPFCodeGen.so build failure

yonghong-song · yonghong-song · commit c50f5dece972 · 2020-08-06T15:27:15.000-07:00
Buildbot reported a build failure when building shared library libLLVMBPFCodeGen.so with unknown reference to "createCFGSimplificationPass". Commit 87cba43 ("BPF: add a SimplifyCFG IR pass during generic Scalar/IPO optimization") added an IR pass SimplifyCFG by BPF target. The commit called function createCFGSimplificationPass() defined in "Scalar" library. Add this library in Target/BPF/LLVMBuild.txt so shared library build can succeed.
diff --git a/llvm/lib/Target/BPF/LLVMBuild.txt b/llvm/lib/Target/BPF/LLVMBuild.txt
@@ -36,6 +36,7 @@ required_libraries =
  BPFDesc
  BPFInfo
  IPO
+ Scalar
  SelectionDAG
  Support
  Target

-Original file line number
+Diff line change
  BPFDesc
  BPFInfo
  IPO
 + Scalar
  SelectionDAG
  Support
  Target