[llvm-commits] [llvm] r52577 - in /llvm/trunk: lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp lib/CodeGen/SelectionDAG/LegalizeTypes.h test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll
Duncan Sands
baldrick at free.fr
Sat Jun 21 10:00:47 PDT 2008
Author: baldrick
Date: Sat Jun 21 12:00:47 2008
New Revision: 52577
URL: http://llvm.org/viewvc/llvm-project?rev=52577&view=rev
Log:
Support for load/store of expanded float types. I
don't know if a truncating store is possible here,
but added support for it anyway.
Added:
llvm/trunk/test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp?rev=52577&r1=52576&r2=52577&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp Sat Jun 21 12:00:47 2008
@@ -404,6 +404,8 @@
case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break;
case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
+
+ case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
}
// If Lo/Hi is null, the sub-method took care of registering results etc.
@@ -411,6 +413,38 @@
SetExpandedFloat(SDOperand(N, ResNo), Lo, Hi);
}
+void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDOperand &Lo,
+ SDOperand &Hi) {
+ if (ISD::isNON_EXTLoad(N)) {
+ ExpandRes_NON_EXTLOAD(N, Lo, Hi);
+ return;
+ }
+
+ assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
+ LoadSDNode *LD = cast<LoadSDNode>(N);
+ SDOperand Chain = LD->getChain();
+ SDOperand Ptr = LD->getBasePtr();
+
+ MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0));
+ assert(NVT.isByteSized() && "Expanded type not byte sized!");
+ assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
+
+ Lo = DAG.getExtLoad(LD->getExtensionType(), NVT, Chain, Ptr,
+ LD->getSrcValue(), LD->getSrcValueOffset(),
+ LD->getMemoryVT(),
+ LD->isVolatile(), LD->getAlignment());
+
+ // Remember the chain.
+ Chain = Lo.getValue(1);
+
+ // The high part is undefined.
+ Hi = DAG.getNode(ISD::UNDEF, NVT);
+
+ // Modified the chain - switch anything that used the old chain to use the
+ // new one.
+ ReplaceValueWith(SDOperand(LD, 1), Chain);
+}
+
//===----------------------------------------------------------------------===//
// Float Operand Expansion
@@ -441,6 +475,10 @@
case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break;
case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
+
+ case ISD::STORE:
+ Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), OpNo);
+ break;
}
}
@@ -462,3 +500,27 @@
ReplaceValueWith(SDOperand(N, 0), Res);
return false;
}
+
+SDOperand DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
+ if (ISD::isNON_TRUNCStore(N))
+ return ExpandOp_NON_TRUNCStore(N, OpNo);
+
+ assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
+ assert(OpNo == 1 && "Can only expand the stored value so far");
+ StoreSDNode *ST = cast<StoreSDNode>(N);
+
+ SDOperand Chain = ST->getChain();
+ SDOperand Ptr = ST->getBasePtr();
+
+ MVT NVT = TLI.getTypeToTransformTo(ST->getValue().getValueType());
+ assert(NVT.isByteSized() && "Expanded type not byte sized!");
+ assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
+
+ SDOperand Lo, Hi;
+ GetExpandedOp(ST->getValue(), Lo, Hi);
+
+ return DAG.getTruncStore(Chain, Lo, Ptr,
+ ST->getSrcValue(), ST->getSrcValueOffset(),
+ ST->getMemoryVT(),
+ ST->isVolatile(), ST->getAlignment());
+}
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp?rev=52577&r1=52576&r2=52577&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp Sat Jun 21 12:00:47 2008
@@ -1875,7 +1875,7 @@
bool isVolatile = N->isVolatile();
SDOperand Lo, Hi;
- assert(!(NVT.getSizeInBits() & 7) && "Expanded type not byte sized!");
+ assert(NVT.isByteSized() && "Expanded type not byte sized!");
if (N->getMemoryVT().bitsLE(NVT)) {
GetExpandedInteger(N->getValue(), Lo, Hi);
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h?rev=52577&r1=52576&r2=52577&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.h Sat Jun 21 12:00:47 2008
@@ -347,9 +347,11 @@
// Float Result Expansion.
void ExpandFloatResult(SDNode *N, unsigned ResNo);
+ void ExpandFloatRes_LOAD(SDNode *N, SDOperand &Lo, SDOperand &Hi);
// Float Operand Expansion.
bool ExpandFloatOperand(SDNode *N, unsigned OperandNo);
+ SDOperand ExpandFloatOp_STORE(SDNode *N, unsigned OpNo);
//===--------------------------------------------------------------------===//
// Scalarization Support: LegalizeVectorTypes.cpp
Added: llvm/trunk/test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll?rev=52577&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/2008-06-21-F128LoadStore.ll Sat Jun 21 12:00:47 2008
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -march=ppc32
+
+ at g = external global ppc_fp128
+ at h = external global ppc_fp128
+
+define void @f() {
+ %tmp = load ppc_fp128* @g
+ store ppc_fp128 %tmp, ppc_fp128* @h
+ ret void
+}
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