aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Target/Blackfin
diff options
context:
space:
mode:
Diffstat (limited to 'lib/Target/Blackfin')
-rw-r--r--lib/Target/Blackfin/BlackfinFrameInfo.cpp97
-rw-r--r--lib/Target/Blackfin/BlackfinFrameInfo.h41
-rw-r--r--lib/Target/Blackfin/BlackfinRegisterInfo.cpp67
-rw-r--r--lib/Target/Blackfin/BlackfinRegisterInfo.h3
-rw-r--r--lib/Target/Blackfin/BlackfinTargetMachine.cpp2
-rw-r--r--lib/Target/Blackfin/BlackfinTargetMachine.h13
6 files changed, 146 insertions, 77 deletions
diff --git a/lib/Target/Blackfin/BlackfinFrameInfo.cpp b/lib/Target/Blackfin/BlackfinFrameInfo.cpp
new file mode 100644
index 0000000..83f28b0
--- /dev/null
+++ b/lib/Target/Blackfin/BlackfinFrameInfo.cpp
@@ -0,0 +1,97 @@
+//====- BlackfinFrameInfo.cpp - Blackfin Frame Information ------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the Blackfin implementation of TargetFrameInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "BlackfinFrameInfo.h"
+#include "BlackfinInstrInfo.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+
+using namespace llvm;
+
+
+// Emit a prologue that sets up a stack frame.
+// On function entry, R0-R2 and P0 may hold arguments.
+// R3, P1, and P2 may be used as scratch registers
+void BlackfinFrameInfo::emitPrologue(MachineFunction &MF) const {
+ MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
+ MachineBasicBlock::iterator MBBI = MBB.begin();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ const BlackfinRegisterInfo *RegInfo =
+ static_cast<const BlackfinRegisterInfo*>(MF.getTarget().getRegisterInfo());
+ const BlackfinInstrInfo &TII =
+ *static_cast<const BlackfinInstrInfo*>(MF.getTarget().getInstrInfo());
+
+ DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
+
+ int FrameSize = MFI->getStackSize();
+ if (FrameSize%4) {
+ FrameSize = (FrameSize+3) & ~3;
+ MFI->setStackSize(FrameSize);
+ }
+
+ if (!RegInfo->hasFP(MF)) {
+ assert(!MFI->adjustsStack() &&
+ "FP elimination on a non-leaf function is not supported");
+ RegInfo->adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, -FrameSize);
+ return;
+ }
+
+ // emit a LINK instruction
+ if (FrameSize <= 0x3ffff) {
+ BuildMI(MBB, MBBI, dl, TII.get(BF::LINK)).addImm(FrameSize);
+ return;
+ }
+
+ // Frame is too big, do a manual LINK:
+ // [--SP] = RETS;
+ // [--SP] = FP;
+ // FP = SP;
+ // P1 = -FrameSize;
+ // SP = SP + P1;
+ BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH))
+ .addReg(BF::RETS, RegState::Kill);
+ BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH))
+ .addReg(BF::FP, RegState::Kill);
+ BuildMI(MBB, MBBI, dl, TII.get(BF::MOVE), BF::FP)
+ .addReg(BF::SP);
+ RegInfo->loadConstant(MBB, MBBI, dl, BF::P1, -FrameSize);
+ BuildMI(MBB, MBBI, dl, TII.get(BF::ADDpp), BF::SP)
+ .addReg(BF::SP, RegState::Kill)
+ .addReg(BF::P1, RegState::Kill);
+
+}
+
+void BlackfinFrameInfo::emitEpilogue(MachineFunction &MF,
+ MachineBasicBlock &MBB) const {
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ const BlackfinRegisterInfo *RegInfo =
+ static_cast<const BlackfinRegisterInfo*>(MF.getTarget().getRegisterInfo());
+ const BlackfinInstrInfo &TII =
+ *static_cast<const BlackfinInstrInfo*>(MF.getTarget().getInstrInfo());
+ MachineBasicBlock::iterator MBBI = prior(MBB.end());
+ DebugLoc dl = MBBI->getDebugLoc();
+
+ int FrameSize = MFI->getStackSize();
+ assert(FrameSize%4 == 0 && "Misaligned frame size");
+
+ if (!RegInfo->hasFP(MF)) {
+ assert(!MFI->adjustsStack() &&
+ "FP elimination on a non-leaf function is not supported");
+ RegInfo->adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, FrameSize);
+ return;
+ }
+
+ // emit an UNLINK instruction
+ BuildMI(MBB, MBBI, dl, TII.get(BF::UNLINK));
+}
diff --git a/lib/Target/Blackfin/BlackfinFrameInfo.h b/lib/Target/Blackfin/BlackfinFrameInfo.h
new file mode 100644
index 0000000..ff8ba2d
--- /dev/null
+++ b/lib/Target/Blackfin/BlackfinFrameInfo.h
@@ -0,0 +1,41 @@
+//=- BlackfinFrameInfo.h - Define TargetFrameInfo for Blackfin --*- C++ -*--==//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALPHA_FRAMEINFO_H
+#define ALPHA_FRAMEINFO_H
+
+#include "Blackfin.h"
+#include "BlackfinSubtarget.h"
+#include "llvm/Target/TargetFrameInfo.h"
+
+namespace llvm {
+ class BlackfinSubtarget;
+
+class BlackfinFrameInfo : public TargetFrameInfo {
+protected:
+ const BlackfinSubtarget &STI;
+
+public:
+ explicit BlackfinFrameInfo(const BlackfinSubtarget &sti)
+ : TargetFrameInfo(TargetFrameInfo::StackGrowsDown, 4, 0), STI(sti) {
+ }
+
+ /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+ /// the function.
+ void emitPrologue(MachineFunction &MF) const;
+ void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+};
+
+} // End llvm namespace
+
+#endif
diff --git a/lib/Target/Blackfin/BlackfinRegisterInfo.cpp b/lib/Target/Blackfin/BlackfinRegisterInfo.cpp
index a518312..4f827b7 100644
--- a/lib/Target/Blackfin/BlackfinRegisterInfo.cpp
+++ b/lib/Target/Blackfin/BlackfinRegisterInfo.cpp
@@ -342,73 +342,6 @@ processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
}
}
-// Emit a prologue that sets up a stack frame.
-// On function entry, R0-R2 and P0 may hold arguments.
-// R3, P1, and P2 may be used as scratch registers
-void BlackfinRegisterInfo::emitPrologue(MachineFunction &MF) const {
- MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
- MachineBasicBlock::iterator MBBI = MBB.begin();
- MachineFrameInfo *MFI = MF.getFrameInfo();
- DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
-
- int FrameSize = MFI->getStackSize();
- if (FrameSize%4) {
- FrameSize = (FrameSize+3) & ~3;
- MFI->setStackSize(FrameSize);
- }
-
- if (!hasFP(MF)) {
- assert(!MFI->adjustsStack() &&
- "FP elimination on a non-leaf function is not supported");
- adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, -FrameSize);
- return;
- }
-
- // emit a LINK instruction
- if (FrameSize <= 0x3ffff) {
- BuildMI(MBB, MBBI, dl, TII.get(BF::LINK)).addImm(FrameSize);
- return;
- }
-
- // Frame is too big, do a manual LINK:
- // [--SP] = RETS;
- // [--SP] = FP;
- // FP = SP;
- // P1 = -FrameSize;
- // SP = SP + P1;
- BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH))
- .addReg(BF::RETS, RegState::Kill);
- BuildMI(MBB, MBBI, dl, TII.get(BF::PUSH))
- .addReg(BF::FP, RegState::Kill);
- BuildMI(MBB, MBBI, dl, TII.get(BF::MOVE), BF::FP)
- .addReg(BF::SP);
- loadConstant(MBB, MBBI, dl, BF::P1, -FrameSize);
- BuildMI(MBB, MBBI, dl, TII.get(BF::ADDpp), BF::SP)
- .addReg(BF::SP, RegState::Kill)
- .addReg(BF::P1, RegState::Kill);
-
-}
-
-void BlackfinRegisterInfo::emitEpilogue(MachineFunction &MF,
- MachineBasicBlock &MBB) const {
- MachineFrameInfo *MFI = MF.getFrameInfo();
- MachineBasicBlock::iterator MBBI = prior(MBB.end());
- DebugLoc dl = MBBI->getDebugLoc();
-
- int FrameSize = MFI->getStackSize();
- assert(FrameSize%4 == 0 && "Misaligned frame size");
-
- if (!hasFP(MF)) {
- assert(!MFI->adjustsStack() &&
- "FP elimination on a non-leaf function is not supported");
- adjustRegister(MBB, MBBI, dl, BF::SP, BF::P1, FrameSize);
- return;
- }
-
- // emit an UNLINK instruction
- BuildMI(MBB, MBBI, dl, TII.get(BF::UNLINK));
-}
-
unsigned BlackfinRegisterInfo::getRARegister() const {
return BF::RETS;
}
diff --git a/lib/Target/Blackfin/BlackfinRegisterInfo.h b/lib/Target/Blackfin/BlackfinRegisterInfo.h
index bb83c34..be08292 100644
--- a/lib/Target/Blackfin/BlackfinRegisterInfo.h
+++ b/lib/Target/Blackfin/BlackfinRegisterInfo.h
@@ -57,9 +57,6 @@ namespace llvm {
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const;
- void emitPrologue(MachineFunction &MF) const;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
-
unsigned getFrameRegister(const MachineFunction &MF) const;
unsigned getRARegister() const;
diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.cpp b/lib/Target/Blackfin/BlackfinTargetMachine.cpp
index 66a2f68..da6490f 100644
--- a/lib/Target/Blackfin/BlackfinTargetMachine.cpp
+++ b/lib/Target/Blackfin/BlackfinTargetMachine.cpp
@@ -33,7 +33,7 @@ BlackfinTargetMachine::BlackfinTargetMachine(const Target &T,
TLInfo(*this),
TSInfo(*this),
InstrInfo(Subtarget),
- FrameInfo(TargetFrameInfo::StackGrowsDown, 4, 0) {
+ FrameInfo(Subtarget) {
}
bool BlackfinTargetMachine::addInstSelector(PassManagerBase &PM,
diff --git a/lib/Target/Blackfin/BlackfinTargetMachine.h b/lib/Target/Blackfin/BlackfinTargetMachine.h
index a63aa54..19d3f5b 100644
--- a/lib/Target/Blackfin/BlackfinTargetMachine.h
+++ b/lib/Target/Blackfin/BlackfinTargetMachine.h
@@ -14,14 +14,15 @@
#ifndef BLACKFINTARGETMACHINE_H
#define BLACKFINTARGETMACHINE_H
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetFrameInfo.h"
#include "BlackfinInstrInfo.h"
-#include "BlackfinSubtarget.h"
+#include "BlackfinIntrinsicInfo.h"
#include "BlackfinISelLowering.h"
+#include "BlackfinFrameInfo.h"
+#include "BlackfinSubtarget.h"
#include "BlackfinSelectionDAGInfo.h"
-#include "BlackfinIntrinsicInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetFrameInfo.h"
namespace llvm {
@@ -31,7 +32,7 @@ namespace llvm {
BlackfinTargetLowering TLInfo;
BlackfinSelectionDAGInfo TSInfo;
BlackfinInstrInfo InstrInfo;
- TargetFrameInfo FrameInfo;
+ BlackfinFrameInfo FrameInfo;
BlackfinIntrinsicInfo IntrinsicInfo;
public:
BlackfinTargetMachine(const Target &T, const std::string &TT,
generated by cgit v1.1 at 2025-11-04 10:01:08 +0000