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| author | Dan Gohman <gohman@apple.com> | 2009-08-11 15:50:56 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-08-11 15:50:56 +0000 |
| commit | d1ad72f54f4abf62a5f0b2c297edf5e4b1ab1024 (patch) | |
| tree | b2024a44e9dfa9f42cf78b1303847e279b2ec373 /include/llvm/CodeGen/MachineFunctionPass.h | |
| parent | 004072508bfc66159ca09be26f06b8b05c1bac4e (diff) | |
Add a comment about the additional meaning of setPreservesCFG() for
MachineFunctionPass passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78669 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/MachineFunctionPass.h')
| -rw-r--r-- | include/llvm/CodeGen/MachineFunctionPass.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineFunctionPass.h b/include/llvm/CodeGen/MachineFunctionPass.h index 6f7c216382..60460afae7 100644 --- a/include/llvm/CodeGen/MachineFunctionPass.h +++ b/include/llvm/CodeGen/MachineFunctionPass.h @@ -40,6 +40,10 @@ protected: /// getAnalysisUsage - Subclasses that override getAnalysisUsage /// must call this. + /// + /// For MachineFunctionPasses, calling AU.preservesCFG() indicates that + /// the pass does not modify the MachineBasicBlock CFG. + /// virtual void getAnalysisUsage(AnalysisUsage &AU) const; private: |