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| author | Matthias Braun <matze@braunis.de> | 2015-08-20 23:33:31 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2015-08-20 23:33:31 +0000 |
| commit | 266204b7dc4ee64dfa8493cdf76902f424933fe8 (patch) | |
| tree | 5b230d63a4d0b36bb59d8b4dd58227a3328974cb /llvm/lib/Target/AArch64/AArch64ISelLowering.cpp | |
| parent | 549718563d09e1893139af80bb85f7fb18a294b9 (diff) | |
| download | bcm5719-llvm-266204b7dc4ee64dfa8493cdf76902f424933fe8.tar.gz bcm5719-llvm-266204b7dc4ee64dfa8493cdf76902f424933fe8.zip | |
AArch64: Do not create CCMP on multiple users.
Create CMP;CCMP sequences from and/or trees does not gain us anything if
the and/or tree is materialized to a GP register anyway. While most of
the code already checked for hasOneUse() there was one important case
missing.
llvm-svn: 245640
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64ISelLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp index 206088dd5e8..3d1235bac0a 100644 --- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp +++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp @@ -1349,7 +1349,7 @@ static SDValue emitConjunctionDisjunctionTree(SelectionDAG &DAG, SDValue Val, unsigned NZCV = AArch64CC::getNZCVToSatisfyCondCode(InvOutCC); return emitConditionalComparison(LHS, RHS, CC, CCOp, ConditionOp, NZCV, DL, DAG); - } else if (Opcode != ISD::AND && Opcode != ISD::OR) + } else if ((Opcode != ISD::AND && Opcode != ISD::OR) || !Val->hasOneUse()) return SDValue(); assert((Opcode == ISD::OR || !PushNegate) |
