diff options
| author | Jonas Paulsson <paulsson@linux.vnet.ibm.com> | 2017-07-21 11:59:37 +0000 |
|---|---|---|
| committer | Jonas Paulsson <paulsson@linux.vnet.ibm.com> | 2017-07-21 11:59:37 +0000 |
| commit | ed69aeeaad2cfea56c10be20d1a5677df443c83e (patch) | |
| tree | 4676178b45454aa2a74d83c886a3ff237e585e9a /lib/Target/AVR | |
| parent | cdfd20070adf15da1f727f492c953deb34539348 (diff) | |
[SystemZ, LoopStrengthReduce]
This patch makes LSR generate better code for SystemZ in the cases of memory
intrinsics, Load->Store pairs or comparison of immediate with memory.
In order to achieve this, the following common code changes were made:
* New TTI hook: LSRWithInstrQueries(), which defaults to false. Controls if
LSR should do instruction-based addressing evaluations by calling
isLegalAddressingMode() with the Instruction pointers.
* In LoopStrengthReduce: handle address operands of memset, memmove and memcpy
as address uses, and call isFoldableMemAccessOffset() for any LSRUse::Address,
not just loads or stores.
SystemZ changes:
* isLSRCostLess() implemented with Insns first, and without ImmCost.
* New function supportedAddressingMode() that is a helper for TTI methods
looking at Instructions passed via pointers.
Review: Ulrich Weigand, Quentin Colombet
https://reviews.llvm.org/D35262
https://reviews.llvm.org/D35049
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308729 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/AVR')
| -rw-r--r-- | lib/Target/AVR/AVRISelLowering.cpp | 2 | ||||
| -rw-r--r-- | lib/Target/AVR/AVRISelLowering.h | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/lib/Target/AVR/AVRISelLowering.cpp b/lib/Target/AVR/AVRISelLowering.cpp index 7d3faac1dcc..ab49cf9de89 100644 --- a/lib/Target/AVR/AVRISelLowering.cpp +++ b/lib/Target/AVR/AVRISelLowering.cpp @@ -724,7 +724,7 @@ void AVRTargetLowering::ReplaceNodeResults(SDNode *N, /// by AM is legal for this target, for a load/store of the specified type. bool AVRTargetLowering::isLegalAddressingMode(const DataLayout &DL, const AddrMode &AM, Type *Ty, - unsigned AS) const { + unsigned AS, Instruction *I) const { int64_t Offs = AM.BaseOffs; // Allow absolute addresses. diff --git a/lib/Target/AVR/AVRISelLowering.h b/lib/Target/AVR/AVRISelLowering.h index b44c62a21ac..37e01dc950f 100644 --- a/lib/Target/AVR/AVRISelLowering.h +++ b/lib/Target/AVR/AVRISelLowering.h @@ -83,7 +83,8 @@ public: SelectionDAG &DAG) const override; bool isLegalAddressingMode(const DataLayout &DL, const AddrMode &AM, Type *Ty, - unsigned AS) const override; + unsigned AS, + Instruction *I = nullptr) const override; bool getPreIndexedAddressParts(SDNode *N, SDValue &Base, SDValue &Offset, ISD::MemIndexedMode &AM, |