From bce8887ceef02a51b34814519f6c49492648eb00 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 15 Jan 2006 08:43:57 +0000 Subject: [PATCH] Implement DYNAMIC_STACKALLOC for V8 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25330 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/Sparc/SparcISelDAGToDAG.cpp | 19 ++++++++++++++++++- lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp | 19 ++++++++++++++++++- 2 files changed, 36 insertions(+), 2 deletions(-) diff --git a/lib/Target/Sparc/SparcISelDAGToDAG.cpp b/lib/Target/Sparc/SparcISelDAGToDAG.cpp index 85c69c6c098..c67b5aa5923 100644 --- a/lib/Target/Sparc/SparcISelDAGToDAG.cpp +++ b/lib/Target/Sparc/SparcISelDAGToDAG.cpp @@ -136,6 +136,8 @@ SparcV8TargetLowering::SparcV8TargetLowering(TargetMachine &TM) setOperationAction(ISD::SELECT_CC, MVT::f32, Custom); setOperationAction(ISD::SELECT_CC, MVT::f64, Custom); + setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom); + // V8 has no intrinsics for these particular operations. setOperationAction(ISD::MEMMOVE, MVT::Other, Expand); setOperationAction(ISD::MEMSET, MVT::Other, Expand); @@ -699,7 +701,22 @@ LowerOperation(SDOperand Op, SelectionDAG &DAG) { return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal, DAG.getConstant(CC, MVT::i32), CompareFlag); } - } + case ISD::DYNAMIC_STACKALLOC: { + SDOperand Chain = Op.getOperand(0); + SDOperand Size = Op.getOperand(1); + + SDOperand SP = DAG.getCopyFromReg(Chain, V8::O6, MVT::i32); + Chain = SP.getValue(1); + SDOperand Res = DAG.getNode(ISD::SUB, MVT::i32, SP, Size); + Chain = DAG.getCopyToReg(Chain, V8::O6, Res); + + std::vector VTs(Op.Val->value_begin(), Op.Val->value_end()); + std::vector Ops; + Ops.push_back(Res); + Ops.push_back(Chain); + return DAG.getNode(ISD::MERGE_VALUES, VTs, Ops); + } + } } MachineBasicBlock * diff --git a/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp b/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp index 85c69c6c098..c67b5aa5923 100644 --- a/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp +++ b/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp @@ -136,6 +136,8 @@ SparcV8TargetLowering::SparcV8TargetLowering(TargetMachine &TM) setOperationAction(ISD::SELECT_CC, MVT::f32, Custom); setOperationAction(ISD::SELECT_CC, MVT::f64, Custom); + setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom); + // V8 has no intrinsics for these particular operations. setOperationAction(ISD::MEMMOVE, MVT::Other, Expand); setOperationAction(ISD::MEMSET, MVT::Other, Expand); @@ -699,7 +701,22 @@ LowerOperation(SDOperand Op, SelectionDAG &DAG) { return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal, DAG.getConstant(CC, MVT::i32), CompareFlag); } - } + case ISD::DYNAMIC_STACKALLOC: { + SDOperand Chain = Op.getOperand(0); + SDOperand Size = Op.getOperand(1); + + SDOperand SP = DAG.getCopyFromReg(Chain, V8::O6, MVT::i32); + Chain = SP.getValue(1); + SDOperand Res = DAG.getNode(ISD::SUB, MVT::i32, SP, Size); + Chain = DAG.getCopyToReg(Chain, V8::O6, Res); + + std::vector VTs(Op.Val->value_begin(), Op.Val->value_end()); + std::vector Ops; + Ops.push_back(Res); + Ops.push_back(Chain); + return DAG.getNode(ISD::MERGE_VALUES, VTs, Ops); + } + } } MachineBasicBlock * -- 2.34.1