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| author | Zhou Sheng <zhousheng00@gmail.com> | 2009-02-25 15:34:27 +0000 |
|---|---|---|
| committer | Zhou Sheng <zhousheng00@gmail.com> | 2009-02-25 15:34:27 +0000 |
| commit | 5d9cc1763beba95d3c8328ebac791513a3857fb2 (patch) | |
| tree | a1b14da2844f0c8357db4e4f22d35100f5bb0686 /llvm/lib/Transforms/Utils/SimplifyCFG.cpp | |
| parent | dd4ddf13a6eb34e95551f44f8e637683b30e90d0 (diff) | |
| download | bcm5719-llvm-5d9cc1763beba95d3c8328ebac791513a3857fb2.tar.gz bcm5719-llvm-5d9cc1763beba95d3c8328ebac791513a3857fb2.zip | |
Don't block basic block with only SwitchInst to fold into predecessors.
llvm-svn: 65456
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 6c14a643e81..08c8a3f65e5 100644 --- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1887,7 +1887,11 @@ bool llvm::SimplifyCFG(BasicBlock *BB) { // If the block only contains the switch, see if we can fold the block // away into any preds. - if (SI == &BB->front()) + BasicBlock::iterator BBI = BB->begin(); + // Ignore dbg intrinsics. + while (isa<DbgInfoIntrinsic>(BBI)) + ++BBI; + if (SI == &*BBI) if (FoldValueComparisonIntoPredecessors(SI)) return SimplifyCFG(BB) || 1; } |
