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-rw-r--r--lib/Target/PowerPC/PPCFrameLowering.h198
1 files changed, 9 insertions, 189 deletions
diff --git a/lib/Target/PowerPC/PPCFrameLowering.h b/lib/Target/PowerPC/PPCFrameLowering.h
index 94e9b67..7a226f7 100644
--- a/lib/Target/PowerPC/PPCFrameLowering.h
+++ b/lib/Target/PowerPC/PPCFrameLowering.h
@@ -14,23 +14,18 @@
#define POWERPC_FRAMEINFO_H
#include "PPC.h"
-#include "PPCSubtarget.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
- class PPCSubtarget;
+class PPCSubtarget;
class PPCFrameLowering: public TargetFrameLowering {
const PPCSubtarget &Subtarget;
public:
- PPCFrameLowering(const PPCSubtarget &sti)
- : TargetFrameLowering(TargetFrameLowering::StackGrowsDown,
- (sti.hasQPX() || sti.isBGQ()) ? 32 : 16, 0),
- Subtarget(sti) {
- }
+ PPCFrameLowering(const PPCSubtarget &STI);
unsigned determineFrameLayout(MachineFunction &MF,
bool UpdateMF = true,
@@ -79,6 +74,12 @@ public:
return isPPC64 ? 16 : 4;
}
+ /// getTOCSaveOffset - Return the previous frame offset to save the
+ /// TOC register -- 64-bit SVR4 ABI only.
+ static unsigned getTOCSaveOffset(void) {
+ return 40;
+ }
+
/// getFramePointerSaveOffset - Return the previous frame offset to save the
/// frame pointer.
static unsigned getFramePointerSaveOffset(bool isPPC64, bool isDarwinABI) {
@@ -114,190 +115,9 @@ public:
return 8;
}
- /// getMinCallArgumentsSize - Return the size of the minium PowerPC ABI
- /// argument area.
- static unsigned getMinCallArgumentsSize(bool isPPC64, bool isDarwinABI) {
- // For the Darwin ABI / 64-bit SVR4 ABI:
- // The prolog code of the callee may store up to 8 GPR argument registers to
- // the stack, allowing va_start to index over them in memory if its varargs.
- // Because we cannot tell if this is needed on the caller side, we have to
- // conservatively assume that it is needed. As such, make sure we have at
- // least enough stack space for the caller to store the 8 GPRs.
- if (isDarwinABI || isPPC64)
- return 8 * (isPPC64 ? 8 : 4);
-
- // 32-bit SVR4 ABI:
- // There is no default stack allocated for the 8 first GPR arguments.
- return 0;
- }
-
- /// getMinCallFrameSize - Return the minimum size a call frame can be using
- /// the PowerPC ABI.
- static unsigned getMinCallFrameSize(bool isPPC64, bool isDarwinABI) {
- // The call frame needs to be at least big enough for linkage and 8 args.
- return getLinkageSize(isPPC64, isDarwinABI) +
- getMinCallArgumentsSize(isPPC64, isDarwinABI);
- }
-
- // With the SVR4 ABI, callee-saved registers have fixed offsets on the stack.
const SpillSlot *
- getCalleeSavedSpillSlots(unsigned &NumEntries) const override {
- if (Subtarget.isDarwinABI()) {
- NumEntries = 1;
- if (Subtarget.isPPC64()) {
- static const SpillSlot darwin64Offsets = {PPC::X31, -8};
- return &darwin64Offsets;
- } else {
- static const SpillSlot darwinOffsets = {PPC::R31, -4};
- return &darwinOffsets;
- }
- }
-
- // Early exit if not using the SVR4 ABI.
- if (!Subtarget.isSVR4ABI()) {
- NumEntries = 0;
- return nullptr;
- }
-
- // Note that the offsets here overlap, but this is fixed up in
- // processFunctionBeforeFrameFinalized.
-
- static const SpillSlot Offsets[] = {
- // Floating-point register save area offsets.
- {PPC::F31, -8},
- {PPC::F30, -16},
- {PPC::F29, -24},
- {PPC::F28, -32},
- {PPC::F27, -40},
- {PPC::F26, -48},
- {PPC::F25, -56},
- {PPC::F24, -64},
- {PPC::F23, -72},
- {PPC::F22, -80},
- {PPC::F21, -88},
- {PPC::F20, -96},
- {PPC::F19, -104},
- {PPC::F18, -112},
- {PPC::F17, -120},
- {PPC::F16, -128},
- {PPC::F15, -136},
- {PPC::F14, -144},
-
- // General register save area offsets.
- {PPC::R31, -4},
- {PPC::R30, -8},
- {PPC::R29, -12},
- {PPC::R28, -16},
- {PPC::R27, -20},
- {PPC::R26, -24},
- {PPC::R25, -28},
- {PPC::R24, -32},
- {PPC::R23, -36},
- {PPC::R22, -40},
- {PPC::R21, -44},
- {PPC::R20, -48},
- {PPC::R19, -52},
- {PPC::R18, -56},
- {PPC::R17, -60},
- {PPC::R16, -64},
- {PPC::R15, -68},
- {PPC::R14, -72},
-
- // CR save area offset. We map each of the nonvolatile CR fields
- // to the slot for CR2, which is the first of the nonvolatile CR
- // fields to be assigned, so that we only allocate one save slot.
- // See PPCRegisterInfo::hasReservedSpillSlot() for more information.
- {PPC::CR2, -4},
-
- // VRSAVE save area offset.
- {PPC::VRSAVE, -4},
-
- // Vector register save area
- {PPC::V31, -16},
- {PPC::V30, -32},
- {PPC::V29, -48},
- {PPC::V28, -64},
- {PPC::V27, -80},
- {PPC::V26, -96},
- {PPC::V25, -112},
- {PPC::V24, -128},
- {PPC::V23, -144},
- {PPC::V22, -160},
- {PPC::V21, -176},
- {PPC::V20, -192}
- };
-
- static const SpillSlot Offsets64[] = {
- // Floating-point register save area offsets.
- {PPC::F31, -8},
- {PPC::F30, -16},
- {PPC::F29, -24},
- {PPC::F28, -32},
- {PPC::F27, -40},
- {PPC::F26, -48},
- {PPC::F25, -56},
- {PPC::F24, -64},
- {PPC::F23, -72},
- {PPC::F22, -80},
- {PPC::F21, -88},
- {PPC::F20, -96},
- {PPC::F19, -104},
- {PPC::F18, -112},
- {PPC::F17, -120},
- {PPC::F16, -128},
- {PPC::F15, -136},
- {PPC::F14, -144},
-
- // General register save area offsets.
- {PPC::X31, -8},
- {PPC::X30, -16},
- {PPC::X29, -24},
- {PPC::X28, -32},
- {PPC::X27, -40},
- {PPC::X26, -48},
- {PPC::X25, -56},
- {PPC::X24, -64},
- {PPC::X23, -72},
- {PPC::X22, -80},
- {PPC::X21, -88},
- {PPC::X20, -96},
- {PPC::X19, -104},
- {PPC::X18, -112},
- {PPC::X17, -120},
- {PPC::X16, -128},
- {PPC::X15, -136},
- {PPC::X14, -144},
-
- // VRSAVE save area offset.
- {PPC::VRSAVE, -4},
-
- // Vector register save area
- {PPC::V31, -16},
- {PPC::V30, -32},
- {PPC::V29, -48},
- {PPC::V28, -64},
- {PPC::V27, -80},
- {PPC::V26, -96},
- {PPC::V25, -112},
- {PPC::V24, -128},
- {PPC::V23, -144},
- {PPC::V22, -160},
- {PPC::V21, -176},
- {PPC::V20, -192}
- };
-
- if (Subtarget.isPPC64()) {
- NumEntries = array_lengthof(Offsets64);
-
- return Offsets64;
- } else {
- NumEntries = array_lengthof(Offsets);
-
- return Offsets;
- }
- }
+ getCalleeSavedSpillSlots(unsigned &NumEntries) const override;
};
-
} // End llvm namespace
#endif