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| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-10-28 11:17:59 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-10-28 11:17:59 +0000 |
| commit | 66589dcc8fb5dcf0894a9a80a8dee890a4f3a379 (patch) | |
| tree | 958d99bb4d3324f285793579819e2f929f816462 /include | |
| parent | 188545867dbcd0a6870b19c6b06d49610e7cda93 (diff) | |
| download | external_llvm-66589dcc8fb5dcf0894a9a80a8dee890a4f3a379.zip external_llvm-66589dcc8fb5dcf0894a9a80a8dee890a4f3a379.tar.gz external_llvm-66589dcc8fb5dcf0894a9a80a8dee890a4f3a379.tar.bz2 | |
Keep TBAA info when rewriting SelectionDAG loads and stores
Most SelectionDAG code drops the TBAA info when creating a new form of a
load and store (e.g. during legalization, or when converting a plain
load to an extending one). This patch tries to catch all cases where
the TBAA information can legitimately be carried over.
The patch adds alternative forms of getLoad() and getExtLoad() that take
a MachineMemOperand instead of individual fields. (The corresponding
getTruncStore() already exists.) The idea is to use the MachineMemOperand
forms when all fields are carried over (size, pointer info, isVolatile,
isNonTemporal, alignment and TBAA info). If some adjustment is being
made, e.g. to narrow the load, then we still pass the individual fields
but also pass the TBAA info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193517 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index 1615e4b..3f27bce 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -754,11 +754,16 @@ public: MachinePointerInfo PtrInfo, bool isVolatile, bool isNonTemporal, bool isInvariant, unsigned Alignment, const MDNode *TBAAInfo = 0, const MDNode *Ranges = 0); + SDValue getLoad(EVT VT, SDLoc dl, SDValue Chain, SDValue Ptr, + MachineMemOperand *MMO); SDValue getExtLoad(ISD::LoadExtType ExtType, SDLoc dl, EVT VT, SDValue Chain, SDValue Ptr, MachinePointerInfo PtrInfo, EVT MemVT, bool isVolatile, bool isNonTemporal, unsigned Alignment, const MDNode *TBAAInfo = 0); + SDValue getExtLoad(ISD::LoadExtType ExtType, SDLoc dl, EVT VT, + SDValue Chain, SDValue Ptr, EVT MemVT, + MachineMemOperand *MMO); SDValue getIndexedLoad(SDValue OrigLoad, SDLoc dl, SDValue Base, SDValue Offset, ISD::MemIndexedMode AM); SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, |