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[SystemZ] Use SystemZCallingConv.td to define callee-saved registers

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Just a clean-up.  No behavioral change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212711 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford 2014-07-10 11:44:37 +00:00
parent 2f7fa8922f
commit 35dda8a53c
5 changed files with 22 additions and 15 deletions
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10
lib/Target/SystemZ/SystemZCallingConv.td
View File

@ -13,7 +13,7 @@ class CCIfExtend<CCAction A>
: CCIf<"ArgFlags.isSExt() || ArgFlags.isZExt()", A>;
//===----------------------------------------------------------------------===//
// SVR4 return value calling convention
// z/Linux return value calling convention
//===----------------------------------------------------------------------===//
def RetCC_SystemZ : CallingConv<[
// Promote i32 to i64 if it has an explicit extension type.
@ -39,7 +39,7 @@ def RetCC_SystemZ : CallingConv<[
]>;
//===----------------------------------------------------------------------===//
// SVR4 argument calling conventions
// z/Linux argument calling conventions
//===----------------------------------------------------------------------===//
def CC_SystemZ : CallingConv<[
// Promote i32 to i64 if it has an explicit extension type.
@ -63,3 +63,9 @@ def CC_SystemZ : CallingConv<[
// Other arguments are passed in 8-byte-aligned 8-byte stack slots.
CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 8>>
]>;
//===----------------------------------------------------------------------===//
// z/Linux callee-saved registers
//===----------------------------------------------------------------------===//
def CSR_SystemZ : CalleeSavedRegs<(add (sequence "R%dD", 6, 15),
(sequence "F%dD", 8, 15))>;

6
lib/Target/SystemZ/SystemZISelLowering.cpp
View File

@ -914,6 +914,12 @@ SystemZTargetLowering::LowerCall(CallLoweringInfo &CLI,
Ops.push_back(DAG.getRegister(RegsToPass[I].first,
RegsToPass[I].second.getValueType()));
// Add a register mask operand representing the call-preserved registers.
const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
const uint32_t *Mask = TRI->getCallPreservedMask(CallConv);
assert(Mask && "Missing call preserved mask for calling convention");
Ops.push_back(DAG.getRegisterMask(Mask));
// Glue the call to the argument copies, if any.
if (Glue.getNode())
Ops.push_back(Glue);

4
lib/Target/SystemZ/SystemZInstrInfo.td
View File

@ -233,9 +233,7 @@ defm CondStore64 : CondStores<GR64, nonvolatile_store,
// Call instructions
//===----------------------------------------------------------------------===//
// The definitions here are for the call-clobbered registers.
let isCall = 1, Defs = [R0D, R1D, R2D, R3D, R4D, R5D, R14D,
F0D, F1D, F2D, F3D, F4D, F5D, F6D, F7D, CC] in {
let isCall = 1, Defs = [R14D, CC] in {
def CallBRASL : Alias<6, (outs), (ins pcrel32:$I2, variable_ops),
[(z_call pcrel32:$I2)]>;
def CallBASR : Alias<2, (outs), (ins ADDR64:$R2, variable_ops),

16
lib/Target/SystemZ/SystemZRegisterInfo.cpp
View File

@ -22,18 +22,14 @@ using namespace llvm;
SystemZRegisterInfo::SystemZRegisterInfo()
: SystemZGenRegisterInfo(SystemZ::R14D) {}
const MCPhysReg*
const MCPhysReg *
SystemZRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
static const MCPhysReg CalleeSavedRegs[] = {
SystemZ::R6D, SystemZ::R7D, SystemZ::R8D, SystemZ::R9D,
SystemZ::R10D, SystemZ::R11D, SystemZ::R12D, SystemZ::R13D,
SystemZ::R14D, SystemZ::R15D,
SystemZ::F8D, SystemZ::F9D, SystemZ::F10D, SystemZ::F11D,
SystemZ::F12D, SystemZ::F13D, SystemZ::F14D, SystemZ::F15D,
0
};
return CSR_SystemZ_SaveList;
}
return CalleeSavedRegs;
const uint32_t *
SystemZRegisterInfo::getCallPreservedMask(CallingConv::ID CC) const {
return CSR_SystemZ_RegMask;
}
BitVector

1
lib/Target/SystemZ/SystemZRegisterInfo.h
View File

@ -45,6 +45,7 @@ public:
}
const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF = nullptr) const
override;
const uint32_t *getCallPreservedMask(CallingConv::ID CC) const override;
BitVector getReservedRegs(const MachineFunction &MF) const override;
void eliminateFrameIndex(MachineBasicBlock::iterator MI,
int SPAdj, unsigned FIOperandNum,