AssignFn);
return handleAssignments(MIRBuilder, ArgInfos, ArgHandler);
}
+
+bool ARMCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
+ const MachineOperand &Callee,
+ const ArgInfo &OrigRet,
+ ArrayRef<ArgInfo> OrigArgs) const {
+ const MachineFunction &MF = MIRBuilder.getMF();
+ const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
+
+ if (MF.getSubtarget<ARMSubtarget>().genLongCalls())
+ return false;
+
+ // FIXME: Support calling functions with arguments.
+ if (OrigArgs.size() > 0)
+ return false;
+
+ // FIXME: Support calling functions with return types.
+ if (!OrigRet.Ty->isVoidTy())
+ return false;
+
+ MIRBuilder.buildInstr(ARM::ADJCALLSTACKDOWN)
+ .addImm(0)
+ .add(predOps(ARMCC::AL));
+
+ MIRBuilder.buildInstr(ARM::BLX)
+ .add(Callee)
+ // FIXME: Don't hardcode the calling conv here...
+ .addRegMask(TRI->getCallPreservedMask(MF, CallingConv::ARM_AAPCS));
+
+ MIRBuilder.buildInstr(ARM::ADJCALLSTACKUP)
+ .addImm(0)
+ .addImm(0)
+ .add(predOps(ARMCC::AL));
+
+ return true;
+}
bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
ArrayRef<unsigned> VRegs) const override;
+ bool lowerCall(MachineIRBuilder &MIRBuilder, const MachineOperand &Callee,
+ const ArgInfo &OrigRet,
+ ArrayRef<ArgInfo> OrigArgs) const override;
+
private:
bool lowerReturnVal(MachineIRBuilder &MIRBuilder, const Value *Val,
unsigned VReg, MachineInstrBuilder &Ret) const;
%v = fadd double %p0, %p1
ret double %v
}
+
+define arm_aapcscc void @test_indirect_call(void() *%fptr) {
+; CHECK-LABEL: name: test_indirect_call
+; CHECK: [[FPTR:%[0-9]+]](p0) = COPY %r0
+; CHECK: ADJCALLSTACKDOWN 0, 14, _, implicit-def %sp, implicit %sp
+; CHECK: BLX [[FPTR]](p0), csr_aapcs, implicit-def %lr, implicit %sp
+; CHECK: ADJCALLSTACKUP 0, 0, 14, _, implicit-def %sp, implicit %sp
+entry:
+ notail call arm_aapcscc void %fptr()
+ ret void
+}
+
+declare arm_aapcscc void @call_target()
+
+define arm_aapcscc void @test_direct_call() {
+; CHECK-LABEL: name: test_direct_call
+; CHECK: ADJCALLSTACKDOWN 0, 14, _, implicit-def %sp, implicit %sp
+; CHECK: BLX @call_target, csr_aapcs, implicit-def %lr, implicit %sp
+; CHECK: ADJCALLSTACKUP 0, 0, 14, _, implicit-def %sp, implicit %sp
+entry:
+ notail call arm_aapcscc void @call_target()
+ ret void
+}