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| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2017-03-07 23:12:04 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2017-03-07 23:12:04 +0000 |
| commit | 434d50a7960f85eda5b744a5c6b6aed650ccfc3c (patch) | |
| tree | 86ebcb15f716e39a8e5652345d6cac4362e4a75f /llvm/lib/Target | |
| parent | 8e4d2e0512a96f0d8e000354b2222aa2ae2d0e70 (diff) | |
| download | bcm5719-llvm-434d50a7960f85eda5b744a5c6b6aed650ccfc3c.tar.gz bcm5719-llvm-434d50a7960f85eda5b744a5c6b6aed650ccfc3c.zip | |
[Hexagon] Check for presence before looking registers up in bit tracker
llvm-svn: 297240
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp b/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp index 28784f0aa31..5fef6083552 100644 --- a/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp +++ b/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp @@ -2216,6 +2216,8 @@ bool BitSimplification::genBitSplit(MachineInstr *MI, for (unsigned S = AVs.find_first(); S; S = AVs.find_next(S)) { // The number of leading zeros here should be the number of trailing // non-zeros in RC. + if (!BT.has(S)) + continue; const BitTracker::RegisterCell &SC = BT.lookup(S); if (SC.width() != W || ctlz(SC) != W-Z) continue; @@ -2421,6 +2423,8 @@ bool BitSimplification::simplifyExtractLow(MachineInstr *MI, bool Changed = false; for (unsigned R = AVs.find_first(); R != 0; R = AVs.find_next(R)) { + if (!BT.has(R)) + continue; const BitTracker::RegisterCell &SC = BT.lookup(R); unsigned SW = SC.width(); |
