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| author | Reed Kotler <rkotler@mips.com> | 2013-12-11 03:32:44 +0000 |
|---|---|---|
| committer | Reed Kotler <rkotler@mips.com> | 2013-12-11 03:32:44 +0000 |
| commit | d194a4ae67ed47d128a08ebca2448e154c1367ea (patch) | |
| tree | 1d439b0b92fbf77b0639cbb403eb8458276cba20 /lib/Target/Mips | |
| parent | ec5ebdec47340fc297555e9db7230c325da76585 (diff) | |
| download | llvm-d194a4ae67ed47d128a08ebca2448e154c1367ea.tar.gz llvm-d194a4ae67ed47d128a08ebca2448e154c1367ea.tar.bz2 llvm-d194a4ae67ed47d128a08ebca2448e154c1367ea.tar.xz | |
Distinguish and choose 16 or 32 bit forms of save/restore for Mips16.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196999 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Mips')
| -rw-r--r-- | lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp | 8 | ||||
| -rw-r--r-- | lib/Target/Mips/Mips16InstrInfo.cpp | 12 |
2 files changed, 16 insertions, 4 deletions
diff --git a/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp b/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp index c23fc6a6ed..82deec1a1e 100644 --- a/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp +++ b/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp @@ -85,12 +85,20 @@ void MipsInstPrinter::printInst(const MCInst *MI, raw_ostream &O, O << "\t.set\tmips32r2\n"; break; case Mips::Save16: + O << "\tsave\t"; + printSaveRestore(MI, O); + O << " # 16 bit inst\n"; + return; case Mips::SaveX16: O << "\tsave\t"; printSaveRestore(MI, O); O << "\n"; return; case Mips::Restore16: + O << "\trestore\t"; + printSaveRestore(MI, O); + O << " # 16 bit inst\n"; + return; case Mips::RestoreX16: O << "\trestore\t"; printSaveRestore(MI, O); diff --git a/lib/Target/Mips/Mips16InstrInfo.cpp b/lib/Target/Mips/Mips16InstrInfo.cpp index 2df83e8850..7a3f9d2842 100644 --- a/lib/Target/Mips/Mips16InstrInfo.cpp +++ b/lib/Target/Mips/Mips16InstrInfo.cpp @@ -1,3 +1,4 @@ + //===-- Mips16InstrInfo.cpp - Mips16 Instruction Information --------------===// // // The LLVM Compiler Infrastructure @@ -176,9 +177,10 @@ void Mips16InstrInfo::makeFrame(unsigned SP, int64_t FrameSize, const BitVector Reserved = RI.getReservedRegs(*MBB.getParent()); bool SaveS2 = Reserved[Mips::S2]; MachineInstrBuilder MIB; + unsigned Opc = ((FrameSize <= 128) && !SaveS2)? Mips::Save16:Mips::SaveX16; if (isUInt<11>(FrameSize)) MIB = BuildMI( - MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA). + MBB, I, DL, get(Opc)).addReg(Mips::RA). addReg(Mips::S0). addReg(Mips::S1).addImm(FrameSize); else { @@ -186,7 +188,7 @@ void Mips16InstrInfo::makeFrame(unsigned SP, int64_t FrameSize, // returns largest possible n bit unsigned integer int64_t Remainder = FrameSize - Base; MIB = BuildMI( - MBB, I, DL, get(Mips::SaveX16)).addReg(Mips::RA). + MBB, I, DL, get(Opc)).addReg(Mips::RA). addReg(Mips::S0). addReg(Mips::S1).addImm(Base); if (isInt<16>(-Remainder)) @@ -206,9 +208,11 @@ void Mips16InstrInfo::restoreFrame(unsigned SP, int64_t FrameSize, const BitVector Reserved = RI.getReservedRegs(*MBB.getParent()); bool SaveS2 = Reserved[Mips::S2]; MachineInstrBuilder MIB; + unsigned Opc = ((FrameSize <= 128) && !SaveS2)? + Mips::Restore16:Mips::RestoreX16; if (isUInt<11>(FrameSize)) MIB = BuildMI( - MBB, I, DL, get(Mips::RestoreX16)). + MBB, I, DL, get(Opc)). addReg(Mips::RA, RegState::Define). addReg(Mips::S0, RegState::Define). addReg(Mips::S1, RegState::Define). @@ -222,7 +226,7 @@ void Mips16InstrInfo::restoreFrame(unsigned SP, int64_t FrameSize, else adjustStackPtrBig(SP, Remainder, MBB, I, Mips::A0, Mips::A1); MIB = BuildMI( - MBB, I, DL, get(Mips::RestoreX16)). + MBB, I, DL, get(Opc)). addReg(Mips::RA, RegState::Define). addReg(Mips::S0, RegState::Define). addReg(Mips::S1, RegState::Define). |