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| author | Chris Lattner <sabre@nondot.org> | 2009-11-11 00:21:58 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-11-11 00:21:58 +0000 |
| commit | b14b88a40ab12996c2982c4bc10fd35bb9a371d4 (patch) | |
| tree | 2e85efb2883acae584240e94dd68a82c404d85bb /lib | |
| parent | 68cf6042c14ac649c6861bbd2d00993b15a5dfa6 (diff) | |
| download | external_llvm-b14b88a40ab12996c2982c4bc10fd35bb9a371d4.zip external_llvm-b14b88a40ab12996c2982c4bc10fd35bb9a371d4.tar.gz external_llvm-b14b88a40ab12996c2982c4bc10fd35bb9a371d4.tar.bz2 | |
add a fixme
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86766 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/JumpThreading.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp index cbd8702..065f6a2 100644 --- a/lib/Transforms/Scalar/JumpThreading.cpp +++ b/lib/Transforms/Scalar/JumpThreading.cpp @@ -169,6 +169,10 @@ static unsigned getJumpThreadDuplicationCost(const BasicBlock *BB) { /// Ignore PHI nodes, these will be flattened when duplication happens. BasicBlock::const_iterator I = BB->getFirstNonPHI(); + // FIXME: THREADING will delete values that are just used to compute the + // branch, so they shouldn't count against the duplication cost. + + // Sum up the cost of each instruction until we get to the terminator. Don't // include the terminator because the copy won't include it. unsigned Size = 0; |