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[Hexagon] Consider constant-extended offsets to be valid

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235529 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Krzysztof Parzyszek 2015-04-22 17:51:26 +00:00
parent 3965744216
commit a21ae0affd
2 changed files with 15 additions and 10 deletions
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23
lib/Target/Hexagon/HexagonInstrInfo.cpp
View File

@ -1171,10 +1171,10 @@ bool HexagonInstrInfo::isDeallocRet(const MachineInstr *MI) const {
}
bool HexagonInstrInfo::
isValidOffset(const int Opcode, const int Offset) const {
bool HexagonInstrInfo::isValidOffset(unsigned Opcode, int Offset,
bool Extend) const {
// This function is to check whether the "Offset" is in the correct range of
// the given "Opcode". If "Offset" is not in the correct range, "ADD_ri" is
// the given "Opcode". If "Offset" is not in the correct range, "A2_addi" is
// inserted to calculate the final address. Due to this reason, the function
// assumes that the "Offset" has correct alignment.
// We used to assert if the offset was not properly aligned, however,
@ -1182,8 +1182,16 @@ isValidOffset(const int Opcode, const int Offset) const {
// problem, and we need to allow for it. The front end warns of such
// misaligns with respect to load size.
switch(Opcode) {
switch (Opcode) {
case Hexagon::J2_loop0i:
case Hexagon::J2_loop1i:
return isUInt<10>(Offset);
}
if (Extend)
return true;
switch (Opcode) {
case Hexagon::L2_loadri_io:
case Hexagon::S2_storeri_io:
return (Offset >= Hexagon_MEMW_OFFSET_MIN) &&
@ -1207,7 +1215,6 @@ isValidOffset(const int Opcode, const int Offset) const {
(Offset <= Hexagon_MEMB_OFFSET_MAX);
case Hexagon::A2_addi:
case Hexagon::TFR_FI:
return (Offset >= Hexagon_ADDI_OFFSET_MIN) &&
(Offset <= Hexagon_ADDI_OFFSET_MAX);
@ -1241,10 +1248,8 @@ isValidOffset(const int Opcode, const int Offset) const {
case Hexagon::LDriw_pred:
return true;
case Hexagon::J2_loop0i:
return isUInt<10>(Offset);
// INLINEASM is very special.
case Hexagon::TFR_FI:
case Hexagon::TFR_FIA:
case Hexagon::INLINEASM:
return true;
}

2
lib/Target/Hexagon/HexagonInstrInfo.h
View File

@ -160,7 +160,7 @@ public:
bool isSchedulingBoundary(const MachineInstr *MI,
const MachineBasicBlock *MBB,
const MachineFunction &MF) const override;
bool isValidOffset(const int Opcode, const int Offset) const;
bool isValidOffset(unsigned Opcode, int Offset, bool Extend = true) const;
bool isValidAutoIncImm(const EVT VT, const int Offset) const;
bool isMemOp(const MachineInstr *MI) const;
bool isSpillPredRegOp(const MachineInstr *MI) const;