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-rw-r--r--lib/Target/X86/X86CallingConv.td32
-rw-r--r--lib/Target/X86/X86FastISel.cpp29
-rw-r--r--lib/Target/X86/X86ISelLowering.cpp30
-rw-r--r--lib/Target/X86/X86ISelLowering.h1
4 files changed, 36 insertions, 56 deletions
diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td
index 487e39f8c2..56863d9492 100644
--- a/lib/Target/X86/X86CallingConv.td
+++ b/lib/Target/X86/X86CallingConv.td
@@ -379,3 +379,35 @@ def CC_X86_32_GHC : CallingConv<[
// Pass in STG registers: Base, Sp, Hp, R1
CCIfType<[i32], CCAssignToReg<[EBX, EBP, EDI, ESI]>>
]>;
+
+//===----------------------------------------------------------------------===//
+// X86 Root Argument Calling Conventions
+//===----------------------------------------------------------------------===//
+
+// This is the root argument convention for the X86-32 backend.
+def CC_X86_32 : CallingConv<[
+ CCIfCC<"CallingConv::X86_FastCall", CCDelegateTo<CC_X86_32_FastCall>>,
+ CCIfCC<"CallingConv::X86_ThisCall", CCDelegateTo<CC_X86_32_ThisCall>>,
+ CCIfCC<"CallingConv::Fast", CCDelegateTo<CC_X86_32_FastCC>>,
+ CCIfCC<"CallingConv::GHC", CCDelegateTo<CC_X86_32_GHC>>,
+
+ // Otherwise, drop to normal X86-32 CC
+ CCDelegateTo<CC_X86_32_C>
+]>;
+
+// This is the root argument convention for the X86-64 backend.
+def CC_X86_64 : CallingConv<[
+ CCIfCC<"CallingConv::GHC", CCDelegateTo<CC_X86_64_GHC>>,
+
+ // Mingw64 and native Win64 use Win64 CC
+ CCIfSubtarget<"isTargetWin64()", CCDelegateTo<CC_X86_Win64_C>>,
+
+ // Otherwise, drop to normal X86-64 CC
+ CCDelegateTo<CC_X86_64_C>
+]>;
+
+// This is the argument convention used for the entire X86 backend.
+def CC_X86 : CallingConv<[
+ CCIfSubtarget<"is64Bit()", CCDelegateTo<CC_X86_64>>,
+ CCDelegateTo<CC_X86_32>
+]>;
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index cbbc2fdc75..962ead1045 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -114,8 +114,6 @@ private:
bool X86VisitIntrinsicCall(const IntrinsicInst &I);
bool X86SelectCall(const Instruction *I);
- CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool isTailCall = false);
-
const X86InstrInfo *getInstrInfo() const {
return getTargetMachine()->getInstrInfo();
}
@@ -163,31 +161,6 @@ bool X86FastISel::isTypeLegal(const Type *Ty, EVT &VT, bool AllowI1) {
#include "X86GenCallingConv.inc"
-/// CCAssignFnForCall - Selects the correct CCAssignFn for a given calling
-/// convention.
-CCAssignFn *X86FastISel::CCAssignFnForCall(CallingConv::ID CC,
- bool isTaillCall) {
- if (Subtarget->is64Bit()) {
- if (CC == CallingConv::GHC)
- return CC_X86_64_GHC;
- else if (Subtarget->isTargetWin64())
- return CC_X86_Win64_C;
- else
- return CC_X86_64_C;
- }
-
- if (CC == CallingConv::X86_FastCall)
- return CC_X86_32_FastCall;
- else if (CC == CallingConv::X86_ThisCall)
- return CC_X86_32_ThisCall;
- else if (CC == CallingConv::Fast)
- return CC_X86_32_FastCC;
- else if (CC == CallingConv::GHC)
- return CC_X86_32_GHC;
- else
- return CC_X86_32_C;
-}
-
/// X86FastEmitLoad - Emit a machine instruction to load a value of type VT.
/// The address is either pre-computed, i.e. Ptr, or a GlobalAddress, i.e. GV.
/// Return true and the result register by reference if it is possible.
@@ -1548,7 +1521,7 @@ bool X86FastISel::X86SelectCall(const Instruction *I) {
CCInfo.AllocateStack(32, 8);
}
- CCInfo.AnalyzeCallOperands(ArgVTs, ArgFlags, CCAssignFnForCall(CC));
+ CCInfo.AnalyzeCallOperands(ArgVTs, ArgFlags, CC_X86);
// Get a count of how many bytes are to be pushed on the stack.
unsigned NumBytes = CCInfo.getNextStackOffset();
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index d8ec6a38f6..69589d2860 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1457,30 +1457,6 @@ ArgsAreStructReturn(const SmallVectorImpl<ISD::InputArg> &Ins) {
return Ins[0].Flags.isSRet();
}
-/// CCAssignFnForNode - Selects the correct CCAssignFn for a the
-/// given CallingConvention value.
-CCAssignFn *X86TargetLowering::CCAssignFnForNode(CallingConv::ID CC) const {
- if (Subtarget->is64Bit()) {
- if (CC == CallingConv::GHC)
- return CC_X86_64_GHC;
- else if (Subtarget->isTargetWin64())
- return CC_X86_Win64_C;
- else
- return CC_X86_64_C;
- }
-
- if (CC == CallingConv::X86_FastCall)
- return CC_X86_32_FastCall;
- else if (CC == CallingConv::X86_ThisCall)
- return CC_X86_32_ThisCall;
- else if (CC == CallingConv::Fast)
- return CC_X86_32_FastCC;
- else if (CC == CallingConv::GHC)
- return CC_X86_32_GHC;
- else
- return CC_X86_32_C;
-}
-
/// CreateCopyOfByValArgument - Make a copy of an aggregate at address specified
/// by "Src" to address "Dst" with size and alignment information specified by
/// the specific parameter attribute. The copy will be passed as a byval
@@ -1576,7 +1552,7 @@ X86TargetLowering::LowerFormalArguments(SDValue Chain,
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, isVarArg, getTargetMachine(),
ArgLocs, *DAG.getContext());
- CCInfo.AnalyzeFormalArguments(Ins, CCAssignFnForNode(CallConv));
+ CCInfo.AnalyzeFormalArguments(Ins, CC_X86);
unsigned LastVal = ~0U;
SDValue ArgValue;
@@ -1895,7 +1871,7 @@ X86TargetLowering::LowerCall(SDValue Chain, SDValue Callee,
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, isVarArg, getTargetMachine(),
ArgLocs, *DAG.getContext());
- CCInfo.AnalyzeCallOperands(Outs, CCAssignFnForNode(CallConv));
+ CCInfo.AnalyzeCallOperands(Outs, CC_X86);
// Get a count of how many bytes are to be pushed on the stack.
unsigned NumBytes = CCInfo.getNextStackOffset();
@@ -2478,7 +2454,7 @@ X86TargetLowering::IsEligibleForTailCallOptimization(SDValue Callee,
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CalleeCC, isVarArg, getTargetMachine(),
ArgLocs, *DAG.getContext());
- CCInfo.AnalyzeCallOperands(Outs, CCAssignFnForNode(CalleeCC));
+ CCInfo.AnalyzeCallOperands(Outs, CC_X86);
if (CCInfo.getNextStackOffset()) {
MachineFunction &MF = DAG.getMachineFunction();
if (MF.getInfo<X86MachineFunctionInfo>()->getBytesToPopOnReturn())
diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index 287853f6e8..bc79719f2c 100644
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -717,7 +717,6 @@ namespace llvm {
SDValue Chain, bool IsTailCall, bool Is64Bit,
int FPDiff, DebugLoc dl) const;
- CCAssignFn *CCAssignFnForNode(CallingConv::ID CallConv) const;
unsigned GetAlignedArgumentStackSize(unsigned StackSize,
SelectionDAG &DAG) const;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-30 17:57:10 +0000