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| author | HaohaiWen <haohai.wen@intel.com> | 2024-01-11 22:10:56 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-01-11 22:10:56 +0800 |
| commit | 52613396a6837e5c8b8334821022cad70fe8e917 (patch) | |
| tree | 521b258d91d38927a38611e11605008857907342 /llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp | |
| parent | f892cc36fda6d25d4f7cbf68e95b17ba0af040b8 (diff) | |
| download | llvm-52613396a6837e5c8b8334821022cad70fe8e917.zip llvm-52613396a6837e5c8b8334821022cad70fe8e917.tar.gz llvm-52613396a6837e5c8b8334821022cad70fe8e917.tar.bz2 | |
[InstrRef] Add debug hint for not reachable blocks from entry (#77725)
Those not reachable blocks was not analyzed by LiveDebugValues and may
raise out of bound access to VarLocs as case in #77441.
Diffstat (limited to 'llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp b/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp index 9037f75..cfc8c28 100644 --- a/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp +++ b/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp @@ -2403,8 +2403,15 @@ bool InstrRefBasedLDV::mlocJoin( llvm::sort(BlockOrders, Cmp); // Skip entry block. - if (BlockOrders.size() == 0) + if (BlockOrders.size() == 0) { + // FIXME: We don't use assert here to prevent instr-ref-unreachable.mir + // failing. + LLVM_DEBUG(if (!MBB.isEntryBlock()) dbgs() + << "Found not reachable block " << MBB.getFullName() + << " from entry which may lead out of " + "bound access to VarLocs\n"); return false; + } // Step through all machine locations, look at each predecessor and test // whether we can eliminate redundant PHIs. |