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[mips][msa] Fix issue with immediate fields of LD/ST instructions

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not being correctly encoded/decoded.
In more detail, immediate fields of LD/ST instructions should be
divided/multiplied by the size of the data format before encoding and
after decoding, respectively.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196494 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matheus Almeida
2013-12-05 11:06:22 +00:00
parent 52123d1842
commit 4faa2b38fb
6 changed files with 173 additions and 29 deletions
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lib/Target/Mips/MipsCodeEmitter.cpp
+7
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@@ -112,6 +112,7 @@ private:
unsigned getBranchTargetOpValue(const MachineInstr &MI, unsigned OpNo) const;
unsigned getMemEncoding(const MachineInstr &MI, unsigned OpNo) const;
unsigned getMemEncodingMMImm12(const MachineInstr &MI, unsigned OpNo) const;
unsigned getMSAMemEncoding(const MachineInstr &MI, unsigned OpNo) const;
unsigned getSizeExtEncoding(const MachineInstr &MI, unsigned OpNo) const;
unsigned getSizeInsEncoding(const MachineInstr &MI, unsigned OpNo) const;
unsigned getLSAImmEncoding(const MachineInstr &MI, unsigned OpNo) const;
@@ -224,6 +225,12 @@ unsigned MipsCodeEmitter::getMemEncodingMMImm12(const MachineInstr &MI,
return 0;
}
unsigned MipsCodeEmitter::getMSAMemEncoding(const MachineInstr &MI,
unsigned OpNo) const {
llvm_unreachable("Unimplemented function.");
return 0;
}
unsigned MipsCodeEmitter::getSizeExtEncoding(const MachineInstr &MI,
unsigned OpNo) const {
// size is encoded as size-1.