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ARM: mark additional instructions as MachineFrameSetup

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Mark up additional instructions which are part of the function prologue as
MachineFrameSetup.  These instructions are part of the function prologue,
emitted by the PEI pass to setup the stack for use in the activating frame.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208153 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2014-05-07 03:03:31 +00:00
parent 0029e2d665
commit 3fe09b705c
1 changed files with 10 additions and 5 deletions
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15
lib/Target/ARM/ARMFrameLowering.cpp
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@ -299,10 +299,12 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF) const {
if (NumWords < 65536)
AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi16), ARM::R4)
.addImm(NumWords));
.addImm(NumWords)
.setMIFlags(MachineInstr::FrameSetup));
else
BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi32imm), ARM::R4)
.addImm(NumWords);
.addImm(NumWords)
.setMIFlags(MachineInstr::FrameSetup);
switch (TM.getCodeModel()) {
case CodeModel::Small:
@ -312,17 +314,20 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF) const {
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBL))
.addImm((unsigned)ARMCC::AL).addReg(0)
.addExternalSymbol("__chkstk")
.addReg(ARM::R4, RegState::Implicit);
.addReg(ARM::R4, RegState::Implicit)
.setMIFlags(MachineInstr::FrameSetup);
break;
case CodeModel::Large:
case CodeModel::JITDefault:
BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi32imm), ARM::R12)
.addExternalSymbol("__chkstk");
.addExternalSymbol("__chkstk")
.setMIFlags(MachineInstr::FrameSetup);
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBLXr))
.addImm((unsigned)ARMCC::AL).addReg(0)
.addReg(ARM::R12, RegState::Kill)
.addReg(ARM::R4, RegState::Implicit);
.addReg(ARM::R4, RegState::Implicit)
.setMIFlags(MachineInstr::FrameSetup);
break;
}