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Rename CCIfStruct to CCIfByVal and CCStructAssign to CCPassByVal. Remove unused parameters of CCStructAssign and add size and alignment requirement info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-15 03:34:58 +00:00
parent bdfd5ef823
commit 6bfa8a121d
3 changed files with 17 additions and 13 deletions
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15
lib/Target/TargetCallingConv.td
View File

@ -32,9 +32,9 @@ class CCIf<string predicate, CCAction A> : CCPredicateAction<A> {
string Predicate = predicate;
}
/// CCIfStruct - If the current argument is a struct, apply
/// CCIfByVal - If the current argument has ByVal parameter attribute, apply
/// Action A.
class CCIfStruct<CCAction A> : CCIf<"ArgFlags & ISD::ParamFlags::ByVal", A> {
class CCIfByVal<CCAction A> : CCIf<"ArgFlags & ISD::ParamFlags::ByVal", A> {
}
/// CCIfCC - Match of the current calling convention is 'CC'.
@ -68,11 +68,12 @@ class CCAssignToStack<int size, int align> : CCAction {
int Align = align;
}
/// 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.
class CCStructAssign<list<Register> regList> : CCAction {
list<Register> RegList = regList;
/// CCPassByVal - This action always matches: it assigns the value to a stack
/// slot to implement ByVal aggregate parameter passing. Size and alignment
/// specify the minimum size and alignment for the stack slot.
class CCPassByVal<int size, int align> : CCAction {
int Size = size;
int Align = align;
}
/// CCPromoteToType - If applied, this promotes the specified current value to

6
lib/Target/X86/X86CallingConv.td
View File

@ -97,7 +97,7 @@ def RetCC_X86 : CallingConv<[
def CC_X86_64_C : CallingConv<[
// Handles byval parameters.
CCIfStruct<CCStructAssign<[]>>,
CCIfByVal<CCPassByVal<8, 8>>,
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
@ -136,7 +136,7 @@ def CC_X86_64_C : CallingConv<[
// namely R9
def CC_X86_64_TailCall : CallingConv<[
// Handles byval parameters.
CCIfStruct<CCStructAssign<[]>>,
CCIfByVal<CCPassByVal<8, 8>>,
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
@ -177,7 +177,7 @@ def CC_X86_64_TailCall : CallingConv<[
/// regs.
def CC_X86_32_Common : CallingConv<[
// Handles byval parameters.
CCIfStruct<CCStructAssign<[]>>,
CCIfByVal<CCPassByVal<4, 4>>,
// Integer/Float values get stored in stack slots that are 4 bytes in
// size and 4-byte aligned.

9
utils/TableGen/CallingConvEmitter.cpp
View File

@ -140,9 +140,12 @@ void CallingConvEmitter::EmitAction(Record *Action,
<< IndentStr << IndentStr << "LocInfo = CCValAssign::ZExt;\n"
<< IndentStr << "else\n"
<< IndentStr << IndentStr << "LocInfo = CCValAssign::AExt;\n";
} else if (Action->isSubClassOf("CCStructAssign")) {
O << IndentStr <<
"State.HandleStruct(ValNo, ValVT, LocVT, LocInfo, ArgFlags);\n";
} else if (Action->isSubClassOf("CCPassByVal")) {
int Size = Action->getValueAsInt("Size");
int Align = Action->getValueAsInt("Align");
O << IndentStr
<< "State.HandleByVal(ValNo, ValVT, LocVT, LocInfo, "
<< Size << ", " << Align << ", ArgFlags);\n";
O << IndentStr << "return false;\n";
} else {
Action->dump();