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| author | Shiva Chen <shiva0217@gmail.com> | 2018-05-09 02:41:08 +0000 |
|---|---|---|
| committer | Shiva Chen <shiva0217@gmail.com> | 2018-05-09 02:41:08 +0000 |
| commit | cd070cdc94ef5f2da3d3a9724c4fcde778fcd163 (patch) | |
| tree | 314d9c0f1739fa65209925f1bb1cb0832e7fbeb3 /llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h | |
| parent | 2c864551df3945f50e1780b2f2c880ec358ae715 (diff) | |
| download | bcm5719-llvm-cd070cdc94ef5f2da3d3a9724c4fcde778fcd163.tar.gz bcm5719-llvm-cd070cdc94ef5f2da3d3a9724c4fcde778fcd163.zip | |
[DebugInfo] Convert intrinsic llvm.dbg.label to MachineInstr.
In order to convert LLVM IR to MachineInstr, we need a new TargetOpcode,
DBG_LABEL, to ‘lower’ intrinsic llvm.dbg.label. The patch
creates this new TargetOpcode and convert intrinsic llvm.dbg.label to
MachineInstr through SelectionDAG.
In SelectionDAG, debug information is stored in SDDbgInfo. We create a
new data member of SDDbgInfo for labels and use the new data member,
SDDbgLabel, to create DBG_LABEL MachineInstr.
The new DBG_LABEL MachineInstr uses label metadata from LLVM IR as its
parameter. So, the backend could get metadata information of labels from
DBG_LABEL MachineInstr.
Differential Revision: https://reviews.llvm.org/D45341
Patch by Hsiangkai Wang.
llvm-svn: 331842
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h index 8a8a1bbd18f..701b6368690 100644 --- a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h +++ b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.h @@ -113,6 +113,9 @@ public: MachineInstr *EmitDbgValue(SDDbgValue *SD, DenseMap<SDValue, unsigned> &VRBaseMap); + /// Generate machine instruction for a dbg_label node. + MachineInstr *EmitDbgLabel(SDDbgLabel *SD); + /// EmitNode - Generate machine code for a node and needed dependencies. /// void EmitNode(SDNode *Node, bool IsClone, bool IsCloned, |
