setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Expand);
-
+
+ // TRAMPOLINE is custom lowered.
+ setOperationAction(ISD::TRAMPOLINE, MVT::Other, Custom);
+
maxStoresPerMemset = maxStoresPerMemsetOptSize = 4;
maxStoresPerMemmove = maxStoresPerMemmoveOptSize
= maxStoresPerMemcpy = maxStoresPerMemcpyOptSize = 2;
case ISD::ADD:
case ISD::SUB: return ExpandADDSUB(Op.getNode(), DAG);
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
+ case ISD::TRAMPOLINE: return LowerTRAMPOLINE(Op, DAG);
default:
llvm_unreachable("unimplemented operand");
return SDValue();
RegInfo->getFrameRegister(MF), MVT::i32);
}
+SDValue XCoreTargetLowering::
+LowerTRAMPOLINE(SDValue Op, SelectionDAG &DAG) const {
+ SDValue Chain = Op.getOperand(0);
+ SDValue Trmp = Op.getOperand(1); // trampoline
+ SDValue FPtr = Op.getOperand(2); // nested function
+ SDValue Nest = Op.getOperand(3); // 'nest' parameter value
+
+ const Value *TrmpAddr = cast<SrcValueSDNode>(Op.getOperand(4))->getValue();
+
+ // .align 4
+ // LDAPF_u10 r11, nest
+ // LDW_2rus r11, r11[0]
+ // STWSP_ru6 r11, sp[0]
+ // LDAPF_u10 r11, fptr
+ // LDW_2rus r11, r11[0]
+ // BAU_1r r11
+ // nest:
+ // .word nest
+ // fptr:
+ // .word fptr
+ SDValue OutChains[5];
+
+ SDValue Addr = Trmp;
+
+ DebugLoc dl = Op.getDebugLoc();
+ OutChains[0] = DAG.getStore(Chain, dl, DAG.getConstant(0x0a3cd805, MVT::i32),
+ Addr, MachinePointerInfo(TrmpAddr), false, false,
+ 0);
+
+ Addr = DAG.getNode(ISD::ADD, dl, MVT::i32, Trmp,
+ DAG.getConstant(4, MVT::i32));
+ OutChains[1] = DAG.getStore(Chain, dl, DAG.getConstant(0xd80456c0, MVT::i32),
+ Addr, MachinePointerInfo(TrmpAddr, 4), false,
+ false, 0);
+
+ Addr = DAG.getNode(ISD::ADD, dl, MVT::i32, Trmp,
+ DAG.getConstant(8, MVT::i32));
+ OutChains[2] = DAG.getStore(Chain, dl, DAG.getConstant(0x27fb0a3c, MVT::i32),
+ Addr, MachinePointerInfo(TrmpAddr, 8), false,
+ false, 0);
+
+ Addr = DAG.getNode(ISD::ADD, dl, MVT::i32, Trmp,
+ DAG.getConstant(12, MVT::i32));
+ OutChains[3] = DAG.getStore(Chain, dl, Nest, Addr,
+ MachinePointerInfo(TrmpAddr, 12), false, false,
+ 0);
+
+ Addr = DAG.getNode(ISD::ADD, dl, MVT::i32, Trmp,
+ DAG.getConstant(16, MVT::i32));
+ OutChains[4] = DAG.getStore(Chain, dl, FPtr, Addr,
+ MachinePointerInfo(TrmpAddr, 16), false, false,
+ 0);
+
+ SDValue Ops[] =
+ { Trmp, DAG.getNode(ISD::TokenFactor, dl, MVT::Other, OutChains, 5) };
+ return DAG.getMergeValues(Ops, 2, dl);
+}
+
//===----------------------------------------------------------------------===//
// Calling Convention Implementation
//===----------------------------------------------------------------------===//
--- /dev/null
+; RUN: llc < %s -march=xcore | FileCheck %s
+
+%struct.FRAME.f = type { i32, i32 ()* }
+
+define void @f() nounwind {
+entry:
+; CHECK: f:
+; CHECK ldap r11, g.1101
+; CHECK stw r11, sp[7]
+ %TRAMP.23 = alloca [20 x i8], align 2
+ %FRAME.0 = alloca %struct.FRAME.f, align 4
+ %TRAMP.23.sub = getelementptr inbounds [20 x i8]* %TRAMP.23, i32 0, i32 0
+ %FRAME.02 = bitcast %struct.FRAME.f* %FRAME.0 to i8*
+ %tramp = call i8* @llvm.init.trampoline(i8* %TRAMP.23.sub, i8* bitcast (i32 (%struct.FRAME.f*)* @g.1101 to i8*), i8* %FRAME.02)
+ %0 = getelementptr inbounds %struct.FRAME.f* %FRAME.0, i32 0, i32 1
+ %1 = bitcast i8* %tramp to i32 ()*
+ store i32 ()* %1, i32 ()** %0, align 4
+ %2 = getelementptr inbounds %struct.FRAME.f* %FRAME.0, i32 0, i32 0
+ store i32 1, i32* %2, align 4
+ call void @h(i32 ()* %1) nounwind
+ ret void
+}
+
+define internal i32 @g.1101(%struct.FRAME.f* nocapture nest %CHAIN.1) nounwind readonly {
+entry:
+; CHECK: g.1101:
+; CHECK: ldw r11, sp[0]
+; CHECK-NEXT: ldw r0, r11[0]
+; CHECK-NEXT: retsp 0
+ %0 = getelementptr inbounds %struct.FRAME.f* %CHAIN.1, i32 0, i32 0
+ %1 = load i32* %0, align 4
+ ret i32 %1
+}
+
+declare i8* @llvm.init.trampoline(i8*, i8*, i8*) nounwind
+
+declare void @h(i32 ()*)