Move EmitFrameMoves into AsmPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100371 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
index 9e7f182..b310578 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
@@ -13,17 +13,24 @@
#define DEBUG_TYPE "asm-printer"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Dwarf.h"
using namespace llvm;
+//===----------------------------------------------------------------------===//
+// Dwarf Emission Helper Routines
+//===----------------------------------------------------------------------===//
+
/// EmitSLEB128 - emit the specified signed leb128 value.
void AsmPrinter::EmitSLEB128(int Value, const char *Desc) const {
if (isVerbose() && Desc)
@@ -118,7 +125,7 @@
/// encoding. If verbose assembly output is enabled, we output comments
/// describing the encoding. Desc is an optional string saying what the
/// encoding is specifying (e.g. "LSDA").
-void AsmPrinter::EmitEncodingByte(unsigned Val, const char *Desc) {
+void AsmPrinter::EmitEncodingByte(unsigned Val, const char *Desc) const {
if (isVerbose()) {
if (Desc != 0)
OutStreamer.AddComment(Twine(Desc)+" Encoding = " +
@@ -196,4 +203,77 @@
EmitLabelDifference(Label, SectionLabel, 4);
}
+//===----------------------------------------------------------------------===//
+// Dwarf Lowering Routines
+//===----------------------------------------------------------------------===//
+
+/// EmitFrameMoves - Emit frame instructions to describe the layout of the
+/// frame.
+void AsmPrinter::EmitFrameMoves(const std::vector<MachineMove> &Moves,
+ MCSymbol *BaseLabel, bool isEH) const {
+ const TargetRegisterInfo *RI = TM.getRegisterInfo();
+
+ int stackGrowth = TM.getTargetData()->getPointerSize();
+ if (TM.getFrameInfo()->getStackGrowthDirection() !=
+ TargetFrameInfo::StackGrowsUp)
+ stackGrowth *= -1;
+
+ for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
+ const MachineMove &Move = Moves[i];
+ MCSymbol *Label = Move.getLabel();
+ // Throw out move if the label is invalid.
+ if (Label && !Label->isDefined()) continue; // Not emitted, in dead code.
+
+ const MachineLocation &Dst = Move.getDestination();
+ const MachineLocation &Src = Move.getSource();
+
+ // Advance row if new location.
+ if (BaseLabel && Label) {
+ MCSymbol *ThisSym = Label;
+ if (ThisSym != BaseLabel) {
+ EmitCFAByte(dwarf::DW_CFA_advance_loc4);
+ EmitLabelDifference(ThisSym, BaseLabel, 4);
+ BaseLabel = ThisSym;
+ }
+ }
+
+ // If advancing cfa.
+ if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
+ assert(!Src.isReg() && "Machine move not supported yet.");
+
+ if (Src.getReg() == MachineLocation::VirtualFP) {
+ EmitCFAByte(dwarf::DW_CFA_def_cfa_offset);
+ } else {
+ EmitCFAByte(dwarf::DW_CFA_def_cfa);
+ EmitULEB128(RI->getDwarfRegNum(Src.getReg(), isEH), "Register");
+ }
+
+ EmitULEB128(-Src.getOffset(), "Offset");
+ continue;
+ }
+
+ if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
+ assert(Dst.isReg() && "Machine move not supported yet.");
+ EmitCFAByte(dwarf::DW_CFA_def_cfa_register);
+ EmitULEB128(RI->getDwarfRegNum(Dst.getReg(), isEH), "Register");
+ continue;
+ }
+
+ unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH);
+ int Offset = Dst.getOffset() / stackGrowth;
+
+ if (Offset < 0) {
+ EmitCFAByte(dwarf::DW_CFA_offset_extended_sf);
+ EmitULEB128(Reg, "Reg");
+ EmitSLEB128(Offset, "Offset");
+ } else if (Reg < 64) {
+ EmitCFAByte(dwarf::DW_CFA_offset + Reg);
+ EmitULEB128(Offset, "Offset");
+ } else {
+ EmitCFAByte(dwarf::DW_CFA_offset_extended);
+ EmitULEB128(Reg, "Reg");
+ EmitULEB128(Offset, "Offset");
+ }
+ }
+}
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index aae6437..29239d1 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2852,7 +2852,7 @@
std::vector<MachineMove> Moves;
RI->getInitialFrameState(Moves);
- EmitFrameMoves(0, Moves, false);
+ Asm->EmitFrameMoves(Moves, 0, false);
Asm->EmitAlignment(2, 0, 0, false);
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_frame_common_end"));
@@ -2893,7 +2893,7 @@
Asm->EmitLabelDifference(Asm->GetTempSymbol("func_end",DebugFrameInfo.Number),
FuncBeginSym, TD->getPointerSize());
- EmitFrameMoves(FuncBeginSym, DebugFrameInfo.Moves, false);
+ Asm->EmitFrameMoves(DebugFrameInfo.Moves, FuncBeginSym, false);
Asm->EmitAlignment(2, 0, 0, false);
Asm->OutStreamer.EmitLabel(DebugFrameEnd);
diff --git a/lib/CodeGen/AsmPrinter/DwarfException.cpp b/lib/CodeGen/AsmPrinter/DwarfException.cpp
index b29e675..114dbc9 100644
--- a/lib/CodeGen/AsmPrinter/DwarfException.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfException.cpp
@@ -151,7 +151,7 @@
// Indicate locations of general callee saved registers in frame.
std::vector<MachineMove> Moves;
RI->getInitialFrameState(Moves);
- EmitFrameMoves(0, Moves, true);
+ Asm->EmitFrameMoves(Moves, 0, true);
// On Darwin the linker honors the alignment of eh_frame, which means it must
// be 8-byte on 64-bit targets to match what gcc does. Otherwise you get
@@ -253,7 +253,7 @@
}
// Indicate locations of function specific callee saved registers in frame.
- EmitFrameMoves(EHFuncBeginSym, EHFrameInfo.Moves, true);
+ Asm->EmitFrameMoves(EHFrameInfo.Moves, EHFuncBeginSym, true);
// On Darwin the linker honors the alignment of eh_frame, which means it
// must be 8-byte on 64-bit targets to match what gcc does. Otherwise you
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
index 870dab7..1d7926a 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
@@ -37,73 +37,3 @@
RI(Asm->TM.getRegisterInfo()), M(NULL), MF(NULL), MMI(NULL),
SubprogramCount(0) {
}
-
-
-/// EmitFrameMoves - Emit frame instructions to describe the layout of the
-/// frame.
-void DwarfPrinter::EmitFrameMoves(MCSymbol *BaseLabel,
- const std::vector<MachineMove> &Moves,
- bool isEH) {
- int stackGrowth = TD->getPointerSize();
- if (Asm->TM.getFrameInfo()->getStackGrowthDirection() !=
- TargetFrameInfo::StackGrowsUp)
- stackGrowth *= -1;
-
- for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
- const MachineMove &Move = Moves[i];
- MCSymbol *Label = Move.getLabel();
- // Throw out move if the label is invalid.
- if (Label && !Label->isDefined()) continue; // Not emitted, in dead code.
-
- const MachineLocation &Dst = Move.getDestination();
- const MachineLocation &Src = Move.getSource();
-
- // Advance row if new location.
- if (BaseLabel && Label) {
- MCSymbol *ThisSym = Label;
- if (ThisSym != BaseLabel) {
- Asm->EmitCFAByte(dwarf::DW_CFA_advance_loc4);
- Asm->EmitLabelDifference(ThisSym, BaseLabel, 4);
- BaseLabel = ThisSym;
- }
- }
-
- // If advancing cfa.
- if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
- assert(!Src.isReg() && "Machine move not supported yet.");
-
- if (Src.getReg() == MachineLocation::VirtualFP) {
- Asm->EmitCFAByte(dwarf::DW_CFA_def_cfa_offset);
- } else {
- Asm->EmitCFAByte(dwarf::DW_CFA_def_cfa);
- Asm->EmitULEB128(RI->getDwarfRegNum(Src.getReg(), isEH), "Register");
- }
-
- Asm->EmitULEB128(-Src.getOffset(), "Offset");
- continue;
- }
-
- if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
- assert(Dst.isReg() && "Machine move not supported yet.");
- Asm->EmitCFAByte(dwarf::DW_CFA_def_cfa_register);
- Asm->EmitULEB128(RI->getDwarfRegNum(Dst.getReg(), isEH), "Register");
- continue;
- }
-
- unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH);
- int Offset = Dst.getOffset() / stackGrowth;
-
- if (Offset < 0) {
- Asm->EmitCFAByte(dwarf::DW_CFA_offset_extended_sf);
- Asm->EmitULEB128(Reg, "Reg");
- Asm->EmitSLEB128(Offset, "Offset");
- } else if (Reg < 64) {
- Asm->EmitCFAByte(dwarf::DW_CFA_offset + Reg);
- Asm->EmitULEB128(Offset, "Offset");
- } else {
- Asm->EmitCFAByte(dwarf::DW_CFA_offset_extended);
- Asm->EmitULEB128(Reg, "Reg");
- Asm->EmitULEB128(Offset, "Offset");
- }
- }
-}
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.h b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
index 3b37980..2ddb674 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.h
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
@@ -74,10 +74,6 @@
const MCAsmInfo *getMCAsmInfo() const { return MAI; }
const TargetData *getTargetData() const { return TD; }
- /// EmitFrameMoves - Emit frame instructions to describe the layout of the
- /// frame.
- void EmitFrameMoves(MCSymbol *BaseLabel,
- const std::vector<MachineMove> &Moves, bool isEH);
};
} // end llvm namespace