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author | Anton Korobeynikov <asl@math.spbu.ru> | 2010-11-15 00:06:54 +0000 |
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committer | Anton Korobeynikov <asl@math.spbu.ru> | 2010-11-15 00:06:54 +0000 |
commit | 33464912237efaa0ed7060829e66b59055bdd48b (patch) | |
tree | 3b5a58918b40d4368be141a6350de4e4c8607032 /lib/Target/Sparc/SparcRegisterInfo.cpp | |
parent | 78b4fee8fd040d802e027da7bef3f707b12d8df5 (diff) | |
download | external_llvm-33464912237efaa0ed7060829e66b59055bdd48b.zip external_llvm-33464912237efaa0ed7060829e66b59055bdd48b.tar.gz external_llvm-33464912237efaa0ed7060829e66b59055bdd48b.tar.bz2 |
First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119097 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Sparc/SparcRegisterInfo.cpp')
-rw-r--r-- | lib/Target/Sparc/SparcRegisterInfo.cpp | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/lib/Target/Sparc/SparcRegisterInfo.cpp b/lib/Target/Sparc/SparcRegisterInfo.cpp index c85db20..b66888c 100644 --- a/lib/Target/Sparc/SparcRegisterInfo.cpp +++ b/lib/Target/Sparc/SparcRegisterInfo.cpp @@ -112,55 +112,6 @@ SparcRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, void SparcRegisterInfo:: processFunctionBeforeFrameFinalized(MachineFunction &MF) const {} -void SparcRegisterInfo::emitPrologue(MachineFunction &MF) const { - MachineBasicBlock &MBB = MF.front(); - MachineFrameInfo *MFI = MF.getFrameInfo(); - MachineBasicBlock::iterator MBBI = MBB.begin(); - DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc(); - - // Get the number of bytes to allocate from the FrameInfo - int NumBytes = (int) MFI->getStackSize(); - - // Emit the correct save instruction based on the number of bytes in - // the frame. Minimum stack frame size according to V8 ABI is: - // 16 words for register window spill - // 1 word for address of returned aggregate-value - // + 6 words for passing parameters on the stack - // ---------- - // 23 words * 4 bytes per word = 92 bytes - NumBytes += 92; - - // Round up to next doubleword boundary -- a double-word boundary - // is required by the ABI. - NumBytes = (NumBytes + 7) & ~7; - NumBytes = -NumBytes; - - if (NumBytes >= -4096) { - BuildMI(MBB, MBBI, dl, TII.get(SP::SAVEri), SP::O6) - .addReg(SP::O6).addImm(NumBytes); - } else { - // Emit this the hard way. This clobbers G1 which we always know is - // available here. - unsigned OffHi = (unsigned)NumBytes >> 10U; - BuildMI(MBB, MBBI, dl, TII.get(SP::SETHIi), SP::G1).addImm(OffHi); - // Emit G1 = G1 + I6 - BuildMI(MBB, MBBI, dl, TII.get(SP::ORri), SP::G1) - .addReg(SP::G1).addImm(NumBytes & ((1 << 10)-1)); - BuildMI(MBB, MBBI, dl, TII.get(SP::SAVErr), SP::O6) - .addReg(SP::O6).addReg(SP::G1); - } -} - -void SparcRegisterInfo::emitEpilogue(MachineFunction &MF, - MachineBasicBlock &MBB) const { - MachineBasicBlock::iterator MBBI = prior(MBB.end()); - DebugLoc dl = MBBI->getDebugLoc(); - assert(MBBI->getOpcode() == SP::RETL && - "Can only put epilog before 'retl' instruction!"); - BuildMI(MBB, MBBI, dl, TII.get(SP::RESTORErr), SP::G0).addReg(SP::G0) - .addReg(SP::G0); -} - unsigned SparcRegisterInfo::getRARegister() const { return SP::I7; } |