ARM: mark additional instructions as MachineFrameSetup

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.

llvm-svn: 208153

1 files changed, 10 insertions, 5 deletions

diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
index 8da7fb89401..c0f8a8d9025 100644
--- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -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;
     }