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Index: head/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
===================================================================
--- head/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
+++ head/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
@@ -2733,11 +2733,19 @@
// PowerPC-32
-
namespace {
-class PPC32TargetCodeGenInfo : public DefaultTargetCodeGenInfo {
+/// PPC32_SVR4_ABIInfo - The 32-bit PowerPC ELF (SVR4) ABI information.
+class PPC32_SVR4_ABIInfo : public DefaultABIInfo {
public:
- PPC32TargetCodeGenInfo(CodeGenTypes &CGT) : DefaultTargetCodeGenInfo(CGT) {}
+ PPC32_SVR4_ABIInfo(CodeGen::CodeGenTypes &CGT) : DefaultABIInfo(CGT) {}
+
+ llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty,
+ CodeGenFunction &CGF) const;
+};
+
+class PPC32TargetCodeGenInfo : public TargetCodeGenInfo {
+public:
+ PPC32TargetCodeGenInfo(CodeGenTypes &CGT) : TargetCodeGenInfo(new PPC32_SVR4_ABIInfo(CGT)) {}
int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const {
// This is recovered from gcc output.
@@ -2750,6 +2758,96 @@
}
+llvm::Value *PPC32_SVR4_ABIInfo::EmitVAArg(llvm::Value *VAListAddr,
+ QualType Ty,
+ CodeGenFunction &CGF) const {
+ if (const ComplexType *CTy = Ty->getAs<ComplexType>()) {
+ // TODO: Implement this. For now ignore.
+ (void)CTy;
+ return NULL;
+ }
+
+ bool isI64 = Ty->isIntegerType() && getContext().getTypeSize(Ty) == 64;
+ bool isInt = Ty->isIntegerType() || Ty->isPointerType() || Ty->isAggregateType();
+ llvm::Type *CharPtr = CGF.Int8PtrTy;
+ llvm::Type *CharPtrPtr = CGF.Int8PtrPtrTy;
+
+ CGBuilderTy &Builder = CGF.Builder;
+ llvm::Value *GPRPtr = Builder.CreateBitCast(VAListAddr, CharPtr, "gprptr");
+ llvm::Value *GPRPtrAsInt = Builder.CreatePtrToInt(GPRPtr, CGF.Int32Ty);
+ llvm::Value *FPRPtrAsInt = Builder.CreateAdd(GPRPtrAsInt, Builder.getInt32(1));
+ llvm::Value *FPRPtr = Builder.CreateIntToPtr(FPRPtrAsInt, CharPtr);
+ llvm::Value *OverflowAreaPtrAsInt = Builder.CreateAdd(FPRPtrAsInt, Builder.getInt32(3));
+ llvm::Value *OverflowAreaPtr = Builder.CreateIntToPtr(OverflowAreaPtrAsInt, CharPtrPtr);
+ llvm::Value *RegsaveAreaPtrAsInt = Builder.CreateAdd(OverflowAreaPtrAsInt, Builder.getInt32(4));
+ llvm::Value *RegsaveAreaPtr = Builder.CreateIntToPtr(RegsaveAreaPtrAsInt, CharPtrPtr);
+ llvm::Value *GPR = Builder.CreateLoad(GPRPtr, false, "gpr");
+ // Align GPR when TY is i64.
+ if (isI64) {
+ llvm::Value *GPRAnd = Builder.CreateAnd(GPR, Builder.getInt8(1));
+ llvm::Value *CC64 = Builder.CreateICmpEQ(GPRAnd, Builder.getInt8(1));
+ llvm::Value *GPRPlusOne = Builder.CreateAdd(GPR, Builder.getInt8(1));
+ GPR = Builder.CreateSelect(CC64, GPRPlusOne, GPR);
+ }
+ llvm::Value *FPR = Builder.CreateLoad(FPRPtr, false, "fpr");
+ llvm::Value *OverflowArea = Builder.CreateLoad(OverflowAreaPtr, false, "overflow_area");
+ llvm::Value *OverflowAreaAsInt = Builder.CreatePtrToInt(OverflowArea, CGF.Int32Ty);
+ llvm::Value *RegsaveArea = Builder.CreateLoad(RegsaveAreaPtr, false, "regsave_area");
+ llvm::Value *RegsaveAreaAsInt = Builder.CreatePtrToInt(RegsaveArea, CGF.Int32Ty);
+
+ llvm::Value *CC = Builder.CreateICmpULT(isInt ? GPR : FPR,
+ Builder.getInt8(8), "cond");
+
+ llvm::Value *RegConstant = Builder.CreateMul(isInt ? GPR : FPR,
+ Builder.getInt8(isInt ? 4 : 8));
+
+ llvm::Value *OurReg = Builder.CreateAdd(RegsaveAreaAsInt, Builder.CreateSExt(RegConstant, CGF.Int32Ty));
+
+ if (Ty->isFloatingType())
+ OurReg = Builder.CreateAdd(OurReg, Builder.getInt32(32));
+
+ llvm::BasicBlock *UsingRegs = CGF.createBasicBlock("using_regs");
+ llvm::BasicBlock *UsingOverflow = CGF.createBasicBlock("using_overflow");
+ llvm::BasicBlock *Cont = CGF.createBasicBlock("cont");
+
+ Builder.CreateCondBr(CC, UsingRegs, UsingOverflow);
+
+ CGF.EmitBlock(UsingRegs);
+
+ llvm::Type *PTy = llvm::PointerType::getUnqual(CGF.ConvertType(Ty));
+ llvm::Value *Result1 = Builder.CreateIntToPtr(OurReg, PTy);
+ // Increase the GPR/FPR indexes.
+ if (isInt) {
+ GPR = Builder.CreateAdd(GPR, Builder.getInt8(isI64 ? 2 : 1));
+ Builder.CreateStore(GPR, GPRPtr);
+ } else {
+ FPR = Builder.CreateAdd(FPR, Builder.getInt8(1));
+ Builder.CreateStore(FPR, FPRPtr);
+ }
+ CGF.EmitBranch(Cont);
+
+ CGF.EmitBlock(UsingOverflow);
+
+ // Increase the overflow area.
+ llvm::Value *Result2 = Builder.CreateIntToPtr(OverflowAreaAsInt, PTy);
+ OverflowAreaAsInt = Builder.CreateAdd(OverflowAreaAsInt, Builder.getInt32(isInt ? 4 : 8));
+ Builder.CreateStore(Builder.CreateIntToPtr(OverflowAreaAsInt, CharPtr), OverflowAreaPtr);
+ CGF.EmitBranch(Cont);
+
+ CGF.EmitBlock(Cont);
+
+ llvm::PHINode *Result = CGF.Builder.CreatePHI(PTy, 2, "vaarg.addr");
+ Result->addIncoming(Result1, UsingRegs);
+ Result->addIncoming(Result2, UsingOverflow);
+
+ if (Ty->isAggregateType()) {
+ llvm::Value *AGGPtr = Builder.CreateBitCast(Result, CharPtrPtr, "aggrptr") ;
+ return Builder.CreateLoad(AGGPtr, false, "aggr");
+ }
+
+ return Result;
+}
+
bool
PPC32TargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
llvm::Value *Address) const {

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