6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-12 13:30:51 +00:00
Code Issues Projects Releases Wiki Activity

R600/SI: Rough first implementation of shouldClusterLoads

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217968 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2014-09-17 17:48:30 +00:00
parent 8df2caebe2
commit 3143460f91
2 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
lib/Target/R600/SIInstrInfo.cpp
View File

@ -260,6 +260,28 @@ bool SIInstrInfo::getLdStBaseRegImmOfs(MachineInstr *LdSt,
return false;
}
bool SIInstrInfo::shouldClusterLoads(MachineInstr *FirstLdSt,
MachineInstr *SecondLdSt,
unsigned NumLoads) const {
unsigned Opc0 = FirstLdSt->getOpcode();
unsigned Opc1 = SecondLdSt->getOpcode();
// TODO: This needs finer tuning
if (NumLoads > 4)
return false;
if (isDS(Opc0) && isDS(Opc1))
return true;
if (isSMRD(Opc0) && isSMRD(Opc1))
return true;
if ((isMUBUF(Opc0) || isMTBUF(Opc0)) && (isMUBUF(Opc1) || isMTBUF(Opc1)))
return true;
return false;
}
void
SIInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, DebugLoc DL,

4
lib/Target/R600/SIInstrInfo.h
View File

@ -70,6 +70,10 @@ public:
unsigned &BaseReg, unsigned &Offset,
const TargetRegisterInfo *TRI) const final;
bool shouldClusterLoads(MachineInstr *FirstLdSt,
MachineInstr *SecondLdSt,
unsigned NumLoads) const final;
void copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,