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-rw-r--r--lib/Target/Mips/Mips16HardFloat.cpp185
1 files changed, 96 insertions, 89 deletions
diff --git a/lib/Target/Mips/Mips16HardFloat.cpp b/lib/Target/Mips/Mips16HardFloat.cpp
index 32dc90a..893fc7c 100644
--- a/lib/Target/Mips/Mips16HardFloat.cpp
+++ b/lib/Target/Mips/Mips16HardFloat.cpp
@@ -11,7 +11,7 @@
//
//===----------------------------------------------------------------------===//
-#include "Mips16HardFloat.h"
+#include "MipsTargetMachine.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Debug.h"
@@ -19,38 +19,51 @@
#include <algorithm>
#include <string>
-#define DEBUG_TYPE "mips16-hard-float"
+using namespace llvm;
-static void inlineAsmOut
- (LLVMContext &C, StringRef AsmString, BasicBlock *BB ) {
- 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);
-}
+#define DEBUG_TYPE "mips16-hard-float"
namespace {
+ class Mips16HardFloat : public ModulePass {
+ public:
+ static char ID;
-class InlineAsmHelper {
- LLVMContext &C;
- BasicBlock *BB;
-public:
- InlineAsmHelper(LLVMContext &C_, BasicBlock *BB_) :
- C(C_), BB(BB_) {
- }
+ Mips16HardFloat(MipsTargetMachine &TM_) : ModulePass(ID), TM(TM_) {}
- void Out(StringRef AsmString) {
- inlineAsmOut(C, AsmString, BB);
- }
+ const char *getPassName() const override {
+ return "MIPS16 Hard Float Pass";
+ }
-};
+ bool runOnModule(Module &M) override;
+
+ protected:
+ 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);
+ }
+ };
+
+ char Mips16HardFloat::ID = 0;
}
+
//
// Return types that matter for hard float are:
// float, double, complex float, and complex double
@@ -154,11 +167,11 @@ static bool needsFPStubFromParams(Function &F) {
if (F.arg_size() >=1) {
Type *ArgType = F.getFunctionType()->getParamType(0);
switch (ArgType->getTypeID()) {
- case Type::FloatTyID:
- case Type::DoubleTyID:
- return true;
- default:
- break;
+ case Type::FloatTyID:
+ case Type::DoubleTyID:
+ return true;
+ default:
+ break;
}
}
return false;
@@ -182,10 +195,8 @@ 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) {
+static void swapFPIntParams(FPParamVariant PV, Module *M, InlineAsmHelper &IAH,
+ bool LE, bool ToFP) {
//LLVMContext &Context = M->getContext();
std::string MI = ToFP? "mtc1 ": "mfc1 ";
switch (PV) {
@@ -242,6 +253,7 @@ static void swapFPIntParams
return;
}
}
+
//
// Make sure that we know we already need a stub for this function.
// Having called needsFPHelperFromSig
@@ -297,8 +309,8 @@ static void assureFPCallStub(Function &F, Module *M,
break;
case CFRet:
if (LE) {
- IAH.Out("mfc1 $$2,$$f0");
- IAH.Out("mfc1 $$3,$$f2");
+ IAH.Out("mfc1 $$2,$$f0");
+ IAH.Out("mfc1 $$3,$$f2");
} else {
IAH.Out("mfc1 $$3,$$f0");
IAH.Out("mfc1 $$3,$$f2");
@@ -331,28 +343,27 @@ static void assureFPCallStub(Function &F, Module *M,
//
// Functions that are llvm intrinsics and don't need helpers.
//
-static const char *IntrinsicInline[] =
- {"fabs",
- "fabsf",
- "llvm.ceil.f32", "llvm.ceil.f64",
- "llvm.copysign.f32", "llvm.copysign.f64",
- "llvm.cos.f32", "llvm.cos.f64",
- "llvm.exp.f32", "llvm.exp.f64",
- "llvm.exp2.f32", "llvm.exp2.f64",
- "llvm.fabs.f32", "llvm.fabs.f64",
- "llvm.floor.f32", "llvm.floor.f64",
- "llvm.fma.f32", "llvm.fma.f64",
- "llvm.log.f32", "llvm.log.f64",
- "llvm.log10.f32", "llvm.log10.f64",
- "llvm.nearbyint.f32", "llvm.nearbyint.f64",
- "llvm.pow.f32", "llvm.pow.f64",
- "llvm.powi.f32", "llvm.powi.f64",
- "llvm.rint.f32", "llvm.rint.f64",
- "llvm.round.f32", "llvm.round.f64",
- "llvm.sin.f32", "llvm.sin.f64",
- "llvm.sqrt.f32", "llvm.sqrt.f64",
- "llvm.trunc.f32", "llvm.trunc.f64",
- };
+static const char *IntrinsicInline[] = {
+ "fabs", "fabsf",
+ "llvm.ceil.f32", "llvm.ceil.f64",
+ "llvm.copysign.f32", "llvm.copysign.f64",
+ "llvm.cos.f32", "llvm.cos.f64",
+ "llvm.exp.f32", "llvm.exp.f64",
+ "llvm.exp2.f32", "llvm.exp2.f64",
+ "llvm.fabs.f32", "llvm.fabs.f64",
+ "llvm.floor.f32", "llvm.floor.f64",
+ "llvm.fma.f32", "llvm.fma.f64",
+ "llvm.log.f32", "llvm.log.f64",
+ "llvm.log10.f32", "llvm.log10.f64",
+ "llvm.nearbyint.f32", "llvm.nearbyint.f64",
+ "llvm.pow.f32", "llvm.pow.f64",
+ "llvm.powi.f32", "llvm.powi.f64",
+ "llvm.rint.f32", "llvm.rint.f64",
+ "llvm.round.f32", "llvm.round.f64",
+ "llvm.sin.f32", "llvm.sin.f64",
+ "llvm.sqrt.f32", "llvm.sqrt.f64",
+ "llvm.trunc.f32", "llvm.trunc.f64",
+};
static bool isIntrinsicInline(Function *F) {
return std::binary_search(std::begin(IntrinsicInline),
@@ -384,9 +395,10 @@ static bool fixupFPReturnAndCall(Function &F, Module *M,
Type *T = RVal->getType();
FPReturnVariant RV = whichFPReturnVariant(T);
if (RV == NoFPRet) continue;
- static const char* Helper[NoFPRet] =
- {"__mips16_ret_sf", "__mips16_ret_df", "__mips16_ret_sc",
- "__mips16_ret_dc"};
+ static const char* Helper[NoFPRet] = {
+ "__mips16_ret_sf", "__mips16_ret_df", "__mips16_ret_sc",
+ "__mips16_ret_dc"
+ };
const char *Name = Helper[RV];
AttributeSet A;
Value *Params[] = {RVal};
@@ -406,33 +418,33 @@ static bool fixupFPReturnAndCall(Function &F, Module *M,
Value *F = (M->getOrInsertFunction(Name, A, MyVoid, T, nullptr));
CallInst::Create(F, Params, "", &Inst );
} else if (const CallInst *CI = dyn_cast<CallInst>(I)) {
- const Value* V = CI->getCalledValue();
- const Type* T = nullptr;
- if (V) T = V->getType();
- const PointerType *PFT=nullptr;
- if (T) PFT = dyn_cast<PointerType>(T);
- const FunctionType *FT=nullptr;
- if (PFT) FT = dyn_cast<FunctionType>(PFT->getElementType());
- Function *F_ = CI->getCalledFunction();
- if (FT && needsFPReturnHelper(*FT) &&
- !(F_ && isIntrinsicInline(F_))) {
+ const Value* V = CI->getCalledValue();
+ const Type* T = nullptr;
+ if (V) T = V->getType();
+ const PointerType *PFT=nullptr;
+ if (T) PFT = dyn_cast<PointerType>(T);
+ const FunctionType *FT=nullptr;
+ if (PFT) FT = dyn_cast<FunctionType>(PFT->getElementType());
+ Function *F_ = CI->getCalledFunction();
+ if (FT && needsFPReturnHelper(*FT) &&
+ !(F_ && isIntrinsicInline(F_))) {
+ Modified=true;
+ F.addFnAttr("saveS2");
+ }
+ if (F_ && !isIntrinsicInline(F_)) {
+ // pic mode calls are handled by already defined
+ // helper functions
+ if (needsFPReturnHelper(*F_)) {
Modified=true;
F.addFnAttr("saveS2");
}
- if (F_ && !isIntrinsicInline(F_)) {
- // pic mode calls are handled by already defined
- // helper functions
- if (needsFPReturnHelper(*F_)) {
+ if (TM.getRelocationModel() != Reloc::PIC_ ) {
+ if (needsFPHelperFromSig(*F_)) {
+ assureFPCallStub(*F_, M, TM);
Modified=true;
- F.addFnAttr("saveS2");
- }
- if (TM.getRelocationModel() != Reloc::PIC_ ) {
- if (needsFPHelperFromSig(*F_)) {
- assureFPCallStub(*F_, M, TM);
- Modified=true;
- }
}
}
+ }
}
}
return Modified;
@@ -489,7 +501,6 @@ static void removeUseSoftFloat(Function &F) {
F.addAttributes(AttributeSet::FunctionIndex, A);
}
-namespace llvm {
//
// This pass only makes sense when the underlying chip has floating point but
@@ -530,11 +541,7 @@ bool Mips16HardFloat::runOnModule(Module &M) {
return Modified;
}
-char Mips16HardFloat::ID = 0;
-
-}
-ModulePass *llvm::createMips16HardFloat(MipsTargetMachine &TM) {
+ModulePass *llvm::createMips16HardFloatPass(MipsTargetMachine &TM) {
return new Mips16HardFloat(TM);
}
-
generated by cgit v1.1 at 2024-12-22 11:31:07 +0000