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Eliminate the recently introduced CCAssignToStackABISizeAlign

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in favour of teaching CCAssignToStack that size 0 and/or align
0 means to use the ABI values.  This seems a neater solution.
It is safe since no legal value type has size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44107 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2007-11-14 08:29:13 +00:00
parent 38afd9e3ac
commit 87b665d3de
3 changed files with 19 additions and 22 deletions
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11
lib/Target/TargetCallingConv.td
View File

@ -60,19 +60,14 @@ class CCAssignToReg<list<Register> regList> : CCAction {
}
/// 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.

4
lib/Target/X86/X86CallingConv.td
View File

@ -120,7 +120,7 @@ def CC_X86_64_C : CallingConv<[
// 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 @@ def CC_X86_32_Common : CallingConv<[
// 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],

26
utils/TableGen/CallingConvEmitter.cpp
View File

@ -114,19 +114,21 @@ void CallingConvEmitter::EmitAction(Record *Action,
} 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")) {