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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-07 11:49:33 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-07 11:49:33 +0000 |
| commit | 561ba386233628f6ef6e114e971d486a0a8bedba (patch) | |
| tree | 76aacb2c40e3ad17e8f398fc6c898cf0249d11e3 /llvm/lib | |
| parent | 07adb6abdadfed379a9998e53beb82ce1e253b0e (diff) | |
| download | bcm5719-llvm-561ba386233628f6ef6e114e971d486a0a8bedba.tar.gz bcm5719-llvm-561ba386233628f6ef6e114e971d486a0a8bedba.zip | |
[DAG] Pull out ComputeNumSignBits call to make debugging easier. NFCI.
llvm-svn: 357861
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 8796888c7e5..5b89aceb9d4 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1130,8 +1130,8 @@ bool TargetLowering::SimplifyDemandedBits( // If we only care about the highest bit, don't bother shifting right. if (DemandedBits.isSignMask()) { - bool AlreadySignExtended = - TLO.DAG.ComputeNumSignBits(Op0) >= BitWidth - ExVTBits + 1; + unsigned NumSignBits = TLO.DAG.ComputeNumSignBits(Op0); + bool AlreadySignExtended = NumSignBits >= BitWidth - ExVTBits + 1; // However if the input is already sign extended we expect the sign // extension to be dropped altogether later and do not simplify. if (!AlreadySignExtended) { |
