6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-10-25 10:27:04 +00:00
Code Issues Projects Releases Wiki Activity

Added invariant field to the DAG.getLoad method and changed all calls.

Browse Source 
When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144100 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper
2011-11-08 18:42:53 +00:00
parent 30b4d8b83b
commit d752e0f7e6
26 changed files with 253 additions and 202 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/llvm/CodeGen/MachineMemOperand.h
View File

@@ -95,8 +95,10 @@ public:
MOVolatile = 4,
/// The memory access is non-temporal.
MONonTemporal = 8,
/// The memory access is invariant.
MOInvariant = 16,
// This is the number of bits we need to represent flags.
MOMaxBits = 4
MOMaxBits = 5
};
/// MachineMemOperand - Construct an MachineMemOperand object with the
@@ -141,6 +143,7 @@ public:
bool isStore() const { return Flags & MOStore; }
bool isVolatile() const { return Flags & MOVolatile; }
bool isNonTemporal() const { return Flags & MONonTemporal; }
bool isInvariant() const { return Flags & MOInvariant; }
/// refineAlignment - Update this MachineMemOperand to reflect the alignment
/// of MMO, if it has a greater alignment. This must only be used when the

6
include/llvm/CodeGen/SelectionDAG.h
View File

@@ -650,7 +650,7 @@ public:
///
SDValue getLoad(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr,
MachinePointerInfo PtrInfo, bool isVolatile,
bool isNonTemporal, unsigned Alignment,
bool isNonTemporal, bool isInvariant, unsigned Alignment,
const MDNode *TBAAInfo = 0);
SDValue getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT,
SDValue Chain, SDValue Ptr, MachinePointerInfo PtrInfo,
@@ -663,8 +663,8 @@ public:
EVT VT, DebugLoc dl,
SDValue Chain, SDValue Ptr, SDValue Offset,
MachinePointerInfo PtrInfo, EVT MemVT,
bool isVolatile, bool isNonTemporal, unsigned Alignment,
const MDNode *TBAAInfo = 0);
bool isVolatile, bool isNonTemporal, bool isInvariant,
unsigned Alignment, const MDNode *TBAAInfo = 0);
SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType,
EVT VT, DebugLoc dl,
SDValue Chain, SDValue Ptr, SDValue Offset,

9
include/llvm/CodeGen/SelectionDAGNodes.h
View File

@@ -917,12 +917,13 @@ public:
// with MachineMemOperand information.
bool isVolatile() const { return (SubclassData >> 5) & 1; }
bool isNonTemporal() const { return (SubclassData >> 6) & 1; }
bool isInvariant() const { return (SubclassData >> 7) & 1; }
AtomicOrdering getOrdering() const {
return AtomicOrdering((SubclassData >> 7) & 15);
return AtomicOrdering((SubclassData >> 8) & 15);
}
SynchronizationScope getSynchScope() const {
return SynchronizationScope((SubclassData >> 11) & 1);
return SynchronizationScope((SubclassData >> 12) & 1);
}
/// Returns the SrcValue and offset that describes the location of the access
@@ -993,8 +994,8 @@ class AtomicSDNode : public MemSDNode {
"Ordering may not require more than 4 bits!");
assert((SynchScope & 1) == SynchScope &&
"SynchScope may not require more than 1 bit!");
SubclassData |= Ordering << 7;
SubclassData |= SynchScope << 11;
SubclassData |= Ordering << 8;
SubclassData |= SynchScope << 12;
assert(getOrdering() == Ordering && "Ordering encoding error!");
assert(getSynchScope() == SynchScope && "Synch-scope encoding error!");