How about this?
Index: llvm/lib/Target/TargetCallingConv.td
===================================================================
--- llvm.orig/lib/Target/TargetCallingConv.td 2007-11-13 20:06:06.000000000
+0100
+++ llvm/lib/Target/TargetCallingConv.td 2007-11-13 20:08:24.000000000
+0100
@@ -60,19 +60,14 @@
}
/// CCAssignToStack - This action always matches: it assigns the value to a
-/// stack slot of the specified size and alignment on the stack.
+/// stack slot of the specified size and alignment on the stack. If size is
+/// zero then the ABI size is used; if align is zero then the ABI alignment
+/// is used - these may depend on the target or subtarget.
class CCAssignToStack<int size, int align> : CCAction {
int Size = size;
int Align = align;
}
-/// CCAssignToStackABISizeAlign - This action always matches: it assigns
-/// the value to a stack slot of the ABISize and ABIAlignment for the type,
-/// which may depend on the target or subtarget.
-/// "ignored" is here because an empty arg list does not work.
-class CCAssignToStackABISizeAlign<int ignored> : CCAction {
-}
-
/// CCStructAssign - This action always matches: it will use the C ABI and
/// the register availability to decided whether to assign to a set of
/// registers or to a stack slot.
Index: llvm/lib/Target/X86/X86CallingConv.td
===================================================================
--- llvm.orig/lib/Target/X86/X86CallingConv.td 2007-11-13 20:08:33.000000000
+0100
+++ llvm/lib/Target/X86/X86CallingConv.td 2007-11-13 20:30:04.000000000
+0100
@@ -120,7 +120,7 @@
// Long doubles get stack slots whose size and alignment depends on the
// subtarget.
- CCIfType<[f80], CCAssignToStackABISizeAlign<0>>,
+ CCIfType<[f80], CCAssignToStack<0, 0>>,
// Vectors get 16-byte stack slots that are 16-byte aligned.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16,
16>>,
@@ -181,7 +181,7 @@
// Long doubles get slots whose size and alignment depends on the
// subtarget.
- CCIfType<[f80], CCAssignToStackABISizeAlign<0>>,
+ CCIfType<[f80], CCAssignToStack<0, 0>>,
// The first 4 vector arguments are passed in XMM registers.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
Index: llvm/utils/TableGen/CallingConvEmitter.cpp
===================================================================
--- llvm.orig/utils/TableGen/CallingConvEmitter.cpp 2007-11-13
20:09:26.000000000 +0100
+++ llvm/utils/TableGen/CallingConvEmitter.cpp 2007-11-13 20:26:27.000000000
+0100
@@ -114,19 +114,21 @@
} else if (Action->isSubClassOf("CCAssignToStack")) {
int Size = Action->getValueAsInt("Size");
int Align = Action->getValueAsInt("Align");
-
+
O << IndentStr << "unsigned Offset" << ++Counter
- << " = State.AllocateStack(" << Size << ", " << Align << ");\n";
- O << IndentStr << "State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset"
- << Counter << ", LocVT, LocInfo));\n";
- O << IndentStr << "return false;\n";
- } else if (Action->isSubClassOf("CCAssignToStackABISizeAlign")) {
- O << IndentStr << "unsigned Offset" << ++Counter
- << " = State.AllocateStack(State.getTarget().getTargetData()"
- "->getABITypeSize(MVT::getTypeForValueType(LocVT)),\n";
- O << IndentStr << " State.getTarget().getTargetData()"
- "->getABITypeAlignment(MVT::getTypeForValueType(LocVT)));\n";
- O << IndentStr << "State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset"
+ << " = State.AllocateStack(";
+ if (Size)
+ O << Size << ", ";
+ else
+ O << "\n" << IndentStr << " State.getTarget().getTargetData()"
+ "->getABITypeSize(MVT::getTypeForValueType(LocVT)), ";
+ if (Align)
+ O << Align;
+ else
+ O << "\n" << IndentStr << " State.getTarget().getTargetData()"
+ "->getABITypeAlignment(MVT::getTypeForValueType(LocVT))";
+ O << ");\n" << IndentStr
+ << "State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset"
<< Counter << ", LocVT, LocInfo));\n";
O << IndentStr << "return false;\n";
} else if (Action->isSubClassOf("CCPromoteToType")) {
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