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Add comments to describe what these functions actually do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9370 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -17,6 +17,7 @@
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#include "llvm/DerivedTypes.h"
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#include "SparcInternals.h"
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// Choose load instruction opcode based on type of value
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inline MachineOpCode
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ChooseLoadInstruction(const Type *DestTy)
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{
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@ -39,6 +40,7 @@ ChooseLoadInstruction(const Type *DestTy)
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return 0;
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}
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// Choose store instruction opcode based on type of value
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inline MachineOpCode
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ChooseStoreInstruction(const Type *DestTy)
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{
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@ -86,6 +88,11 @@ ChooseAddInstructionByType(const Type* resultType)
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}
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// Because the Sparc instruction selector likes to re-write operands to
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// instructions, making them change from a Value* (virtual register) to a
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// Constant* (making an immediate field), we need to change the opcode from a
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// register-based instruction to an immediate-based instruction, hence this
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// mapping.
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static unsigned
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convertOpcodeFromRegToImm(unsigned Opcode) {
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switch (Opcode) {
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