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Delete some old code used for testing that is not needed anymore.

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This is part of the mips16 epilogue/prologue cleanup.

llvm-svn: 196824
This commit is contained in:
Reed Kotler 2013-12-09 21:19:51 +00:00
parent 84eacf027c
commit d797fb4c9a
1 changed files with 33 additions and 87 deletions
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120
lib/Target/Mips/Mips16InstrInfo.cpp
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@ -28,13 +28,6 @@
using namespace llvm;
static cl::opt<bool> NeverUseSaveRestore(
"mips16-never-use-save-restore",
cl::init(false),
cl::desc("For testing ability to adjust stack pointer "
"without save/restore instruction"),
cl::Hidden);
Mips16InstrInfo::Mips16InstrInfo(MipsTargetMachine &tm)
: MipsInstrInfo(tm, Mips::Bimm16),
@ -180,45 +173,22 @@ void Mips16InstrInfo::makeFrame(unsigned SP, int64_t FrameSize,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
if (!NeverUseSaveRestore) {
if (isUInt<11>(FrameSize))
//BuildMI(MBB, I, DL, get(Mips::SaveRaF16)).addImm(FrameSize);
BuildMI(MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA).
addReg(Mips::S0).
addReg(Mips::S1).addReg(Mips::S2).addImm(FrameSize);
else {
int Base = 2040; // should create template function like isUInt that
// returns largest possible n bit unsigned integer
int64_t Remainder = FrameSize - Base;
BuildMI(MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA).
addReg(Mips::S0).
addReg(Mips::S1).addReg(Mips::S2).addImm(Base);
if (isInt<16>(-Remainder))
BuildAddiuSpImm(MBB, I, -Remainder);
else
adjustStackPtrBig(SP, -Remainder, MBB, I, Mips::V0, Mips::V1);
}
}
if (isUInt<11>(FrameSize))
//BuildMI(MBB, I, DL, get(Mips::SaveRaF16)).addImm(FrameSize);
BuildMI(MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA).
addReg(Mips::S0).
addReg(Mips::S1).addReg(Mips::S2).addImm(FrameSize);
else {
//
// sw ra, -4[sp]
// sw s1, -8[sp]
// sw s0, -12[sp]
MachineInstrBuilder MIB1 = BuildMI(MBB, I, DL, get(Mips::SwRxSpImmX16),
Mips::RA);
MIB1.addReg(Mips::SP);
MIB1.addImm(-4);
MachineInstrBuilder MIB2 = BuildMI(MBB, I, DL, get(Mips::SwRxSpImmX16),
Mips::S1);
MIB2.addReg(Mips::SP);
MIB2.addImm(-8);
MachineInstrBuilder MIB3 = BuildMI(MBB, I, DL, get(Mips::SwRxSpImmX16),
Mips::S0);
MIB3.addReg(Mips::SP);
MIB3.addImm(-12);
adjustStackPtrBig(SP, -FrameSize, MBB, I, Mips::V0, Mips::V1);
int Base = 2040; // should create template function like isUInt that
// returns largest possible n bit unsigned integer
int64_t Remainder = FrameSize - Base;
BuildMI(MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA).
addReg(Mips::S0).
addReg(Mips::S1).addReg(Mips::S2).addImm(Base);
if (isInt<16>(-Remainder))
BuildAddiuSpImm(MBB, I, -Remainder);
else
adjustStackPtrBig(SP, -Remainder, MBB, I, Mips::V0, Mips::V1);
}
}
@ -227,50 +197,26 @@ void Mips16InstrInfo::restoreFrame(unsigned SP, int64_t FrameSize,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
if (!NeverUseSaveRestore) {
if (isUInt<11>(FrameSize))
BuildMI(MBB, I, DL, get(Mips::RestoreX16)).
addReg(Mips::RA, RegState::Define).
addReg(Mips::S0, RegState::Define).
addReg(Mips::S1, RegState::Define).
addReg(Mips::S2, RegState::Define).addImm(FrameSize);
else {
int Base = 2040; // should create template function like isUInt that
// returns largest possible n bit unsigned integer
int64_t Remainder = FrameSize - Base;
if (isInt<16>(Remainder))
BuildAddiuSpImm(MBB, I, Remainder);
else
adjustStackPtrBig(SP, Remainder, MBB, I, Mips::A0, Mips::A1);
BuildMI(MBB, I, DL, get(Mips::RestoreX16)).
addReg(Mips::RA, RegState::Define).
addReg(Mips::S0, RegState::Define).
addReg(Mips::S1, RegState::Define).
addReg(Mips::S2, RegState::Define).addImm(Base);
}
}
if (isUInt<11>(FrameSize))
BuildMI(MBB, I, DL, get(Mips::RestoreX16)).
addReg(Mips::RA, RegState::Define).
addReg(Mips::S0, RegState::Define).
addReg(Mips::S1, RegState::Define).
addReg(Mips::S2, RegState::Define).addImm(FrameSize);
else {
adjustStackPtrBig(SP, FrameSize, MBB, I, Mips::A0, Mips::A1);
// lw ra, -4[sp]
// lw s1, -8[sp]
// lw s0, -12[sp]
MachineInstrBuilder MIB1 = BuildMI(MBB, I, DL, get(Mips::LwRxSpImmX16),
Mips::A0);
MIB1.addReg(Mips::SP);
MIB1.addImm(-4);
MachineInstrBuilder MIB0 = BuildMI(MBB, I, DL, get(Mips::Move32R16),
Mips::RA);
MIB0.addReg(Mips::A0);
MachineInstrBuilder MIB2 = BuildMI(MBB, I, DL, get(Mips::LwRxSpImmX16),
Mips::S1);
MIB2.addReg(Mips::SP);
MIB2.addImm(-8);
MachineInstrBuilder MIB3 = BuildMI(MBB, I, DL, get(Mips::LwRxSpImmX16),
Mips::S0);
MIB3.addReg(Mips::SP);
MIB3.addImm(-12);
int Base = 2040; // should create template function like isUInt that
// returns largest possible n bit unsigned integer
int64_t Remainder = FrameSize - Base;
if (isInt<16>(Remainder))
BuildAddiuSpImm(MBB, I, Remainder);
else
adjustStackPtrBig(SP, Remainder, MBB, I, Mips::A0, Mips::A1);
BuildMI(MBB, I, DL, get(Mips::RestoreX16)).
addReg(Mips::RA, RegState::Define).
addReg(Mips::S0, RegState::Define).
addReg(Mips::S1, RegState::Define).
addReg(Mips::S2, RegState::Define).addImm(Base);
}
}
// Adjust SP by Amount bytes where bytes can be up to 32bit number.