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Diffstat (limited to 'lib/Target/Mips/Mips16HardFloat.cpp')
-rw-r--r--lib/Target/Mips/Mips16HardFloat.cpp202
1 files changed, 106 insertions, 96 deletions
diff --git a/lib/Target/Mips/Mips16HardFloat.cpp b/lib/Target/Mips/Mips16HardFloat.cpp
index 893fc7cdf473..b2bc7e74c706 100644
--- a/lib/Target/Mips/Mips16HardFloat.cpp
+++ b/lib/Target/Mips/Mips16HardFloat.cpp
@@ -40,26 +40,17 @@ namespace {
const MipsTargetMachine &TM;
};
- class InlineAsmHelper {
- LLVMContext &C;
- BasicBlock *BB;
- public:
- InlineAsmHelper(LLVMContext &C_, BasicBlock *BB_) :
- C(C_), BB(BB_) {
- }
-
- void Out(StringRef AsmString) {
- std::vector<llvm::Type *> AsmArgTypes;
- std::vector<llvm::Value*> AsmArgs;
-
- llvm::FunctionType *AsmFTy = llvm::FunctionType::get(Type::getVoidTy(C),
- AsmArgTypes, false);
- llvm::InlineAsm *IA = llvm::InlineAsm::get(AsmFTy, AsmString, "", true,
- /* IsAlignStack */ false,
- llvm::InlineAsm::AD_ATT);
- CallInst::Create(IA, AsmArgs, "", BB);
- }
- };
+ static void EmitInlineAsm(LLVMContext &C, BasicBlock *BB, StringRef AsmText) {
+ std::vector<llvm::Type *> AsmArgTypes;
+ std::vector<llvm::Value *> AsmArgs;
+
+ llvm::FunctionType *AsmFTy =
+ llvm::FunctionType::get(Type::getVoidTy(C), AsmArgTypes, false);
+ llvm::InlineAsm *IA =
+ llvm::InlineAsm::get(AsmFTy, AsmText, "", true,
+ /* IsAlignStack */ false, llvm::InlineAsm::AD_ATT);
+ CallInst::Create(IA, AsmArgs, "", BB);
+ }
char Mips16HardFloat::ID = 0;
}
@@ -182,7 +173,7 @@ static bool needsFPReturnHelper(Function &F) {
return whichFPReturnVariant(RetType) != NoFPRet;
}
-static bool needsFPReturnHelper(const FunctionType &FT) {
+static bool needsFPReturnHelper(FunctionType &FT) {
Type* RetType = FT.getReturnType();
return whichFPReturnVariant(RetType) != NoFPRet;
}
@@ -195,63 +186,72 @@ static bool needsFPHelperFromSig(Function &F) {
// We swap between FP and Integer registers to allow Mips16 and Mips32 to
// interoperate
//
-static void swapFPIntParams(FPParamVariant PV, Module *M, InlineAsmHelper &IAH,
- bool LE, bool ToFP) {
- //LLVMContext &Context = M->getContext();
- std::string MI = ToFP? "mtc1 ": "mfc1 ";
+static std::string swapFPIntParams(FPParamVariant PV, Module *M, bool LE,
+ bool ToFP) {
+ std::string MI = ToFP ? "mtc1 ": "mfc1 ";
+ std::string AsmText;
+
switch (PV) {
case FSig:
- IAH.Out(MI + "$$4,$$f12");
+ AsmText += MI + "$$4, $$f12\n";
break;
+
case FFSig:
- IAH.Out(MI +"$$4,$$f12");
- IAH.Out(MI + "$$5,$$f14");
+ AsmText += MI + "$$4, $$f12\n";
+ AsmText += MI + "$$5, $$f14\n";
break;
+
case FDSig:
- IAH.Out(MI + "$$4,$$f12");
+ AsmText += MI + "$$4, $$f12\n";
if (LE) {
- IAH.Out(MI + "$$6,$$f14");
- IAH.Out(MI + "$$7,$$f15");
+ AsmText += MI + "$$6, $$f14\n";
+ AsmText += MI + "$$7, $$f15\n";
} else {
- IAH.Out(MI + "$$7,$$f14");
- IAH.Out(MI + "$$6,$$f15");
+ AsmText += MI + "$$7, $$f14\n";
+ AsmText += MI + "$$6, $$f15\n";
}
break;
+
case DSig:
if (LE) {
- IAH.Out(MI + "$$4,$$f12");
- IAH.Out(MI + "$$5,$$f13");
+ AsmText += MI + "$$4, $$f12\n";
+ AsmText += MI + "$$5, $$f13\n";
} else {
- IAH.Out(MI + "$$5,$$f12");
- IAH.Out(MI + "$$4,$$f13");
+ AsmText += MI + "$$5, $$f12\n";
+ AsmText += MI + "$$4, $$f13\n";
}
break;
+
case DDSig:
if (LE) {
- IAH.Out(MI + "$$4,$$f12");
- IAH.Out(MI + "$$5,$$f13");
- IAH.Out(MI + "$$6,$$f14");
- IAH.Out(MI + "$$7,$$f15");
+ AsmText += MI + "$$4, $$f12\n";
+ AsmText += MI + "$$5, $$f13\n";
+ AsmText += MI + "$$6, $$f14\n";
+ AsmText += MI + "$$7, $$f15\n";
} else {
- IAH.Out(MI + "$$5,$$f12");
- IAH.Out(MI + "$$4,$$f13");
- IAH.Out(MI + "$$7,$$f14");
- IAH.Out(MI + "$$6,$$f15");
+ AsmText += MI + "$$5, $$f12\n";
+ AsmText += MI + "$$4, $$f13\n";
+ AsmText += MI + "$$7, $$f14\n";
+ AsmText += MI + "$$6, $$f15\n";
}
break;
+
case DFSig:
if (LE) {
- IAH.Out(MI + "$$4,$$f12");
- IAH.Out(MI + "$$5,$$f13");
+ AsmText += MI + "$$4, $$f12\n";
+ AsmText += MI + "$$5, $$f13\n";
} else {
- IAH.Out(MI + "$$5,$$f12");
- IAH.Out(MI + "$$4,$$f13");
+ AsmText += MI + "$$5, $$f12\n";
+ AsmText += MI + "$$4, $$f13\n";
}
- IAH.Out(MI + "$$6,$$f14");
+ AsmText += MI + "$$6, $$f14\n";
break;
+
case NoSig:
- return;
+ break;
}
+
+ return AsmText;
}
//
@@ -282,68 +282,77 @@ static void assureFPCallStub(Function &F, Module *M,
FStub->addFnAttr("nomips16");
FStub->setSection(SectionName);
BasicBlock *BB = BasicBlock::Create(Context, "entry", FStub);
- InlineAsmHelper IAH(Context, BB);
- IAH.Out(".set reorder");
FPReturnVariant RV = whichFPReturnVariant(FStub->getReturnType());
FPParamVariant PV = whichFPParamVariantNeeded(F);
- swapFPIntParams(PV, M, IAH, LE, true);
+
+ std::string AsmText;
+ AsmText += ".set reorder\n";
+ AsmText += swapFPIntParams(PV, M, LE, true);
if (RV != NoFPRet) {
- IAH.Out("move $$18, $$31");
- IAH.Out("jal " + Name);
+ AsmText += "move $$18, $$31\n";
+ AsmText += "jal " + Name + "\n";
} else {
- IAH.Out("lui $$25,%hi(" + Name + ")");
- IAH.Out("addiu $$25,$$25,%lo(" + Name + ")" );
+ AsmText += "lui $$25, %hi(" + Name + ")\n";
+ AsmText += "addiu $$25, $$25, %lo(" + Name + ")\n";
}
+
switch (RV) {
case FRet:
- IAH.Out("mfc1 $$2,$$f0");
+ AsmText += "mfc1 $$2, $$f0\n";
break;
+
case DRet:
if (LE) {
- IAH.Out("mfc1 $$2,$$f0");
- IAH.Out("mfc1 $$3,$$f1");
+ AsmText += "mfc1 $$2, $$f0\n";
+ AsmText += "mfc1 $$3, $$f1\n";
} else {
- IAH.Out("mfc1 $$3,$$f0");
- IAH.Out("mfc1 $$2,$$f1");
+ AsmText += "mfc1 $$3, $$f0\n";
+ AsmText += "mfc1 $$2, $$f1\n";
}
break;
+
case CFRet:
if (LE) {
- IAH.Out("mfc1 $$2,$$f0");
- IAH.Out("mfc1 $$3,$$f2");
+ AsmText += "mfc1 $$2, $$f0\n";
+ AsmText += "mfc1 $$3, $$f2\n";
} else {
- IAH.Out("mfc1 $$3,$$f0");
- IAH.Out("mfc1 $$3,$$f2");
+ AsmText += "mfc1 $$3, $$f0\n";
+ AsmText += "mfc1 $$3, $$f2\n";
}
break;
+
case CDRet:
if (LE) {
- IAH.Out("mfc1 $$4,$$f2");
- IAH.Out("mfc1 $$5,$$f3");
- IAH.Out("mfc1 $$2,$$f0");
- IAH.Out("mfc1 $$3,$$f1");
+ AsmText += "mfc1 $$4, $$f2\n";
+ AsmText += "mfc1 $$5, $$f3\n";
+ AsmText += "mfc1 $$2, $$f0\n";
+ AsmText += "mfc1 $$3, $$f1\n";
} else {
- IAH.Out("mfc1 $$5,$$f2");
- IAH.Out("mfc1 $$4,$$f3");
- IAH.Out("mfc1 $$3,$$f0");
- IAH.Out("mfc1 $$2,$$f1");
+ AsmText += "mfc1 $$5, $$f2\n";
+ AsmText += "mfc1 $$4, $$f3\n";
+ AsmText += "mfc1 $$3, $$f0\n";
+ AsmText += "mfc1 $$2, $$f1\n";
}
break;
+
case NoFPRet:
break;
}
+
if (RV != NoFPRet)
- IAH.Out("jr $$18");
+ AsmText += "jr $$18\n";
else
- IAH.Out("jr $$25");
+ AsmText += "jr $$25\n";
+ EmitInlineAsm(Context, BB, AsmText);
+
new UnreachableInst(Context, BB);
}
//
// Functions that are llvm intrinsics and don't need helpers.
//
-static const char *IntrinsicInline[] = {
+static const char *const IntrinsicInline[] = {
"fabs", "fabsf",
"llvm.ceil.f32", "llvm.ceil.f64",
"llvm.copysign.f32", "llvm.copysign.f64",
@@ -395,7 +404,7 @@ static bool fixupFPReturnAndCall(Function &F, Module *M,
Type *T = RVal->getType();
FPReturnVariant RV = whichFPReturnVariant(T);
if (RV == NoFPRet) continue;
- static const char* Helper[NoFPRet] = {
+ static const char *const Helper[NoFPRet] = {
"__mips16_ret_sf", "__mips16_ret_df", "__mips16_ret_sc",
"__mips16_ret_dc"
};
@@ -419,11 +428,11 @@ static bool fixupFPReturnAndCall(Function &F, Module *M,
CallInst::Create(F, Params, "", &Inst );
} else if (const CallInst *CI = dyn_cast<CallInst>(I)) {
const Value* V = CI->getCalledValue();
- const Type* T = nullptr;
+ Type* T = nullptr;
if (V) T = V->getType();
- const PointerType *PFT=nullptr;
+ PointerType *PFT = nullptr;
if (T) PFT = dyn_cast<PointerType>(T);
- const FunctionType *FT=nullptr;
+ FunctionType *FT = nullptr;
if (PFT) FT = dyn_cast<FunctionType>(PFT->getElementType());
Function *F_ = CI->getCalledFunction();
if (FT && needsFPReturnHelper(*FT) &&
@@ -469,20 +478,21 @@ static void createFPFnStub(Function *F, Module *M, FPParamVariant PV,
FStub->addFnAttr("nomips16");
FStub->setSection(SectionName);
BasicBlock *BB = BasicBlock::Create(Context, "entry", FStub);
- InlineAsmHelper IAH(Context, BB);
+
+ std::string AsmText;
if (PicMode) {
- IAH.Out(".set noreorder");
- IAH.Out(".cpload $$25");
- IAH.Out(".set reorder");
- IAH.Out(".reloc 0,R_MIPS_NONE," + Name);
- IAH.Out("la $$25," + LocalName);
- }
- else {
- IAH.Out("la $$25," + Name);
- }
- swapFPIntParams(PV, M, IAH, LE, false);
- IAH.Out("jr $$25");
- IAH.Out(LocalName + " = " + Name);
+ AsmText += ".set noreorder\n";
+ AsmText += ".cpload $$25\n";
+ AsmText += ".set reorder\n";
+ AsmText += ".reloc 0, R_MIPS_NONE, " + Name + "\n";
+ AsmText += "la $$25, " + LocalName + "\n";
+ } else
+ AsmText += "la $$25, " + Name + "\n";
+ AsmText += swapFPIntParams(PV, M, LE, false);
+ AsmText += "jr $$25\n";
+ AsmText += LocalName + " = " + Name + "\n";
+ EmitInlineAsm(Context, BB, AsmText);
+
new UnreachableInst(FStub->getContext(), BB);
}
@@ -535,7 +545,7 @@ bool Mips16HardFloat::runOnModule(Module &M) {
FPParamVariant V = whichFPParamVariantNeeded(*F);
if (V != NoSig) {
Modified = true;
- createFPFnStub(F, &M, V, TM);
+ createFPFnStub(&*F, &M, V, TM);
}
}
return Modified;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 02:30:08 +0000