Implement cfi_def_cfa_offset. "Make check" test case for this comming in the
next few days but it's already tested a lot from test-suite and works fine.
This patch completes almost 100% pass of test-suite for mips 16.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170674 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/Mips16FrameLowering.cpp b/lib/Target/Mips/Mips16FrameLowering.cpp
index e0c51ed..5c80a6c 100644
--- a/lib/Target/Mips/Mips16FrameLowering.cpp
+++ b/lib/Target/Mips/Mips16FrameLowering.cpp
@@ -39,9 +39,36 @@
// No need to allocate space on the stack.
if (StackSize == 0 && !MFI->adjustsStack()) return;
+ MachineModuleInfo &MMI = MF.getMMI();
+ std::vector<MachineMove> &Moves = MMI.getFrameMoves();
+ MachineLocation DstML, SrcML;
+
// Adjust stack.
TII.makeFrame(Mips::SP, StackSize, MBB, MBBI);
+ // emit ".cfi_def_cfa_offset StackSize"
+ MCSymbol *AdjustSPLabel = MMI.getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl,
+ TII.get(TargetOpcode::PROLOG_LABEL)).addSym(AdjustSPLabel);
+ DstML = MachineLocation(MachineLocation::VirtualFP);
+ SrcML = MachineLocation(MachineLocation::VirtualFP, -StackSize);
+ Moves.push_back(MachineMove(AdjustSPLabel, DstML, SrcML));
+
+ MCSymbol *CSLabel = MMI.getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl,
+ TII.get(TargetOpcode::PROLOG_LABEL)).addSym(CSLabel);
+ DstML = MachineLocation(MachineLocation::VirtualFP, -8);
+ SrcML = MachineLocation(Mips::S1);
+ Moves.push_back(MachineMove(CSLabel, DstML, SrcML));
+
+ DstML = MachineLocation(MachineLocation::VirtualFP, -12);
+ SrcML = MachineLocation(Mips::S0);
+ Moves.push_back(MachineMove(CSLabel, DstML, SrcML));
+
+ DstML = MachineLocation(MachineLocation::VirtualFP, -4);
+ SrcML = MachineLocation(Mips::RA);
+ Moves.push_back(MachineMove(CSLabel, DstML, SrcML));
+
if (hasFP(MF))
BuildMI(MBB, MBBI, dl, TII.get(Mips::MoveR3216), Mips::S0)
.addReg(Mips::SP);