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Add XCore support for indirectbr / blockaddress.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89273 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne 2009-11-18 23:20:42 +00:00
parent 74f2ca8c4a
commit bea7df56ce
5 changed files with 68 additions and 1 deletions
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2
lib/Target/XCore/AsmPrinter/XCoreAsmPrinter.cpp
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@ -333,6 +333,8 @@ void XCoreAsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
case MachineOperand::MO_JumpTableIndex:
O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << MO.getIndex();
case MachineOperand::MO_BlockAddress:
GetBlockAddressSymbol(MO.getBlockAddress())->print(O, MAI);
break;
default:
llvm_unreachable("not implemented");

15
lib/Target/XCore/XCoreISelLowering.cpp
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@ -111,7 +111,8 @@ XCoreTargetLowering::XCoreTargetLowering(XCoreTargetMachine &XTM)
setOperationAction(ISD::JumpTable, MVT::i32, Custom);
setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
setOperationAction(ISD::BlockAddress, MVT::i32 , Custom);
// Thread Local Storage
setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
@ -158,6 +159,7 @@ LowerOperation(SDValue Op, SelectionDAG &DAG) {
{
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::LOAD: return LowerLOAD(Op, DAG);
@ -287,6 +289,17 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG)
return DAG.getNode(ISD::ADD, dl, MVT::i32, base, offset);
}
SDValue XCoreTargetLowering::
LowerBlockAddress(SDValue Op, SelectionDAG &DAG)
{
DebugLoc DL = Op.getDebugLoc();
BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
SDValue Result = DAG.getBlockAddress(BA, DL, /*isTarget=*/true);
return DAG.getNode(XCoreISD::PCRelativeWrapper, DL, getPointerTy(), Result);
}
SDValue XCoreTargetLowering::
LowerConstantPool(SDValue Op, SelectionDAG &DAG)
{

1
lib/Target/XCore/XCoreISelLowering.h
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@ -120,6 +120,7 @@ namespace llvm {
SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG);
SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG);
SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG);
SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG);
SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG);
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);

6
lib/Target/XCore/XCoreInstrInfo.td
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@ -679,6 +679,12 @@ def LDAP_lu10 : _FLU10<
"ldap r11, $addr",
[(set R11, (pcrelwrapper tglobaladdr:$addr))]>;
let Defs = [R11], isReMaterializable = 1 in
def LDAP_lu10_ba : _FLU10<(outs),
(ins i32imm:$addr),
"ldap r11, $addr",
[(set R11, (pcrelwrapper tblockaddress:$addr))]>;
let isCall=1,
// All calls clobber the the link register and the non-callee-saved registers:
Defs = [R0, R1, R2, R3, R11, LR] in {

45
test/CodeGen/XCore/indirectbr.ll Normal file
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@ -0,0 +1,45 @@
; RUN: llc < %s -march=xcore | FileCheck %s
@nextaddr = global i8* null ; <i8**> [#uses=2]
@C.0.2070 = private constant [5 x i8*] [i8* blockaddress(@foo, %L1), i8* blockaddress(@foo, %L2), i8* blockaddress(@foo, %L3), i8* blockaddress(@foo, %L4), i8* blockaddress(@foo, %L5)] ; <[5 x i8*]*> [#uses=1]
define internal i32 @foo(i32 %i) nounwind {
; CHECK: foo:
entry:
%0 = load i8** @nextaddr, align 4 ; <i8*> [#uses=2]
%1 = icmp eq i8* %0, null ; <i1> [#uses=1]
br i1 %1, label %bb3, label %bb2
bb2: ; preds = %entry, %bb3
%gotovar.4.0 = phi i8* [ %gotovar.4.0.pre, %bb3 ], [ %0, %entry ] ; <i8*> [#uses=1]
; CHECK: bau
indirectbr i8* %gotovar.4.0, [label %L5, label %L4, label %L3, label %L2, label %L1]
bb3: ; preds = %entry
%2 = getelementptr inbounds [5 x i8*]* @C.0.2070, i32 0, i32 %i ; <i8**> [#uses=1]
%gotovar.4.0.pre = load i8** %2, align 4 ; <i8*> [#uses=1]
br label %bb2
L5: ; preds = %bb2
br label %L4
L4: ; preds = %L5, %bb2
%res.0 = phi i32 [ 385, %L5 ], [ 35, %bb2 ] ; <i32> [#uses=1]
br label %L3
L3: ; preds = %L4, %bb2
%res.1 = phi i32 [ %res.0, %L4 ], [ 5, %bb2 ] ; <i32> [#uses=1]
br label %L2
L2: ; preds = %L3, %bb2
%res.2 = phi i32 [ %res.1, %L3 ], [ 1, %bb2 ] ; <i32> [#uses=1]
%phitmp = mul i32 %res.2, 6 ; <i32> [#uses=1]
br label %L1
L1: ; preds = %L2, %bb2
%res.3 = phi i32 [ %phitmp, %L2 ], [ 2, %bb2 ] ; <i32> [#uses=1]
; CHECK: ldap r11, .LBA3_foo_L5
; CHECK: stw r11, dp[nextaddr]
store i8* blockaddress(@foo, %L5), i8** @nextaddr, align 4
ret i32 %res.3
}