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Some notes on better load folding we could do

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30155 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-09-07 20:32:01 +00:00
parent 0300352103
commit b14ca605d7
1 changed files with 2 additions and 0 deletions
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2
lib/Target/X86/X86RegisterInfo.cpp
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@ -520,6 +520,7 @@ MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI,
{ X86::TEST16rr, X86::TEST16rm },
{ X86::TEST32rr, X86::TEST32rm },
{ X86::TEST8rr, X86::TEST8rm },
// FIXME: TEST*rr EAX,EAX ---> CMP [mem], 0
{ X86::UCOMISDrr, X86::UCOMISDrm },
{ X86::UCOMISSrr, X86::UCOMISSrm },
{ X86::XCHG16rr, X86::XCHG16rm },
@ -667,6 +668,7 @@ MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI,
{ X86::SUBPSrr, X86::SUBPSrm },
{ X86::SUBSDrr, X86::SUBSDrm },
{ X86::SUBSSrr, X86::SUBSSrm },
// FIXME: TEST*rr -> swapped operand of TEST*mr.
{ X86::UNPCKHPDrr, X86::UNPCKHPDrm },
{ X86::UNPCKHPSrr, X86::UNPCKHPSrm },
{ X86::UNPCKLPDrr, X86::UNPCKLPDrm },