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fix some assumptions that pointers can only be 32-bits. With this, we can

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now compile:

static unsigned long X;
void test1() {
  X = 0;
}

into:

_test1:
        lis r2, ha16(_X)
        li r3, 0
        stw r3, lo16(_X)(r2)
        blr

Totally amazing :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28839 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-06-16 21:01:35 +00:00
parent 956f43c310
commit 059ca0f5b7
3 changed files with 59 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@@ -128,7 +128,10 @@ PPCTargetLowering::PPCTargetLowering(TargetMachine &TM)
setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
setOperationAction(ISD::ConstantPool, MVT::i32, Custom);
setOperationAction(ISD::JumpTable, MVT::i32, Custom);
setOperationAction(ISD::GlobalAddress, MVT::i64, Custom);
setOperationAction(ISD::ConstantPool, MVT::i64, Custom);
setOperationAction(ISD::JumpTable, MVT::i64, Custom);
// RET must be custom lowered, to meet ABI requirements
setOperationAction(ISD::RET , MVT::Other, Custom);
@@ -583,94 +586,94 @@ SDOperand PPC::get_VSPLTI_elt(SDNode *N, unsigned ByteSize, SelectionDAG &DAG) {
//===----------------------------------------------------------------------===//
static SDOperand LowerConstantPool(SDOperand Op, SelectionDAG &DAG) {
MVT::ValueType PtrVT = Op.getValueType();
ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(Op);
Constant *C = CP->get();
SDOperand CPI = DAG.getTargetConstantPool(C, MVT::i32, CP->getAlignment());
SDOperand Zero = DAG.getConstant(0, MVT::i32);
SDOperand CPI = DAG.getTargetConstantPool(C, PtrVT, CP->getAlignment());
SDOperand Zero = DAG.getConstant(0, PtrVT);
const TargetMachine &TM = DAG.getTarget();
SDOperand Hi = DAG.getNode(PPCISD::Hi, PtrVT, CPI, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, PtrVT, CPI, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
if (TM.getRelocationModel() == Reloc::Static ||
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to the constant pool.
// The address of the global is just (hi(&g)+lo(&g)).
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, CPI, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, CPI, Zero);
return DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
}
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, CPI, Zero);
if (TM.getRelocationModel() == Reloc::PIC) {
// With PIC, the first instruction is actually "GR+hi(&G)".
Hi = DAG.getNode(ISD::ADD, MVT::i32,
DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);
Hi = DAG.getNode(ISD::ADD, PtrVT,
DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
}
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, CPI, Zero);
Lo = DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
return Lo;
}
static SDOperand LowerJumpTable(SDOperand Op, SelectionDAG &DAG) {
MVT::ValueType PtrVT = Op.getValueType();
JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
SDOperand JTI = DAG.getTargetJumpTable(JT->getIndex(), MVT::i32);
SDOperand Zero = DAG.getConstant(0, MVT::i32);
SDOperand JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT);
SDOperand Zero = DAG.getConstant(0, PtrVT);
const TargetMachine &TM = DAG.getTarget();
SDOperand Hi = DAG.getNode(PPCISD::Hi, PtrVT, JTI, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, PtrVT, JTI, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
if (TM.getRelocationModel() == Reloc::Static ||
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to the constant pool.
// The address of the global is just (hi(&g)+lo(&g)).
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, JTI, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, JTI, Zero);
return DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
}
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, JTI, Zero);
if (TM.getRelocationModel() == Reloc::PIC) {
// With PIC, the first instruction is actually "GR+hi(&G)".
Hi = DAG.getNode(ISD::ADD, MVT::i32,
Hi = DAG.getNode(ISD::ADD, PtrVT,
DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);
}
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, JTI, Zero);
Lo = DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
return Lo;
}
static SDOperand LowerGlobalAddress(SDOperand Op, SelectionDAG &DAG) {
MVT::ValueType PtrVT = Op.getValueType();
GlobalAddressSDNode *GSDN = cast<GlobalAddressSDNode>(Op);
GlobalValue *GV = GSDN->getGlobal();
SDOperand GA = DAG.getTargetGlobalAddress(GV, MVT::i32, GSDN->getOffset());
SDOperand Zero = DAG.getConstant(0, MVT::i32);
SDOperand GA = DAG.getTargetGlobalAddress(GV, PtrVT, GSDN->getOffset());
SDOperand Zero = DAG.getConstant(0, PtrVT);
const TargetMachine &TM = DAG.getTarget();
SDOperand Hi = DAG.getNode(PPCISD::Hi, PtrVT, GA, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, PtrVT, GA, Zero);
// If this is a non-darwin platform, we don't support non-static relo models
// yet.
if (TM.getRelocationModel() == Reloc::Static ||
!TM.getSubtarget<PPCSubtarget>().isDarwin()) {
// Generate non-pic code that has direct accesses to globals.
// The address of the global is just (hi(&g)+lo(&g)).
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, GA, Zero);
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, GA, Zero);
return DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
}
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, GA, Zero);
if (TM.getRelocationModel() == Reloc::PIC) {
// With PIC, the first instruction is actually "GR+hi(&G)".
Hi = DAG.getNode(ISD::ADD, MVT::i32,
DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);
Hi = DAG.getNode(ISD::ADD, PtrVT,
DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
}
SDOperand Lo = DAG.getNode(PPCISD::Lo, MVT::i32, GA, Zero);
Lo = DAG.getNode(ISD::ADD, MVT::i32, Hi, Lo);
Lo = DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
if (!GV->hasWeakLinkage() && !GV->hasLinkOnceLinkage() &&
(!GV->isExternal() || GV->hasNotBeenReadFromBytecode()))
@@ -678,7 +681,7 @@ static SDOperand LowerGlobalAddress(SDOperand Op, SelectionDAG &DAG) {
// If the global is weak or external, we have to go through the lazy
// resolution stub.
return DAG.getLoad(MVT::i32, DAG.getEntryNode(), Lo, DAG.getSrcValue(0));
return DAG.getLoad(PtrVT, DAG.getEntryNode(), Lo, DAG.getSrcValue(0));
}
static SDOperand LowerSETCC(SDOperand Op, SelectionDAG &DAG) {