6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-11-28 05:19:42 +00:00
Code Issues Projects Releases Wiki Activity

Add support for fast-math flags to the FCmp instruction.

Browse Source 
FCmp behaves a lot like a floating-point binary operator in many ways,
and can benefit from fast-math information. Flags such as nsz and nnan
can affect if this fcmp (in combination with a select) can be treated
as a fminnum/fmaxnum operation.

This adds backwards-compatible bitcode support, IR parsing and writing,
LangRef changes and IRBuilder changes. I'll need to audit InstSimplify
and InstCombine in a followup to find places where flags should be
copied.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241901 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Molloy
2015-07-10 12:52:00 +00:00
parent e57b60a7f9
commit ee0d992b07
8 changed files with 149 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
include/llvm/IR/IRBuilder.h
View File

@@ -1382,47 +1382,61 @@ public:
return CreateICmp(ICmpInst::ICMP_SLE, LHS, RHS, Name);
}
Value *CreateFCmpOEQ(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_OEQ, LHS, RHS, Name);
Value *CreateFCmpOEQ(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_OEQ, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpOGT(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_OGT, LHS, RHS, Name);
Value *CreateFCmpOGT(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_OGT, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpOGE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_OGE, LHS, RHS, Name);
Value *CreateFCmpOGE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_OGE, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpOLT(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_OLT, LHS, RHS, Name);
Value *CreateFCmpOLT(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_OLT, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpOLE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_OLE, LHS, RHS, Name);
Value *CreateFCmpOLE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_OLE, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpONE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_ONE, LHS, RHS, Name);
Value *CreateFCmpONE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_ONE, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpORD(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_ORD, LHS, RHS, Name);
Value *CreateFCmpORD(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_ORD, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpUNO(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_UNO, LHS, RHS, Name);
Value *CreateFCmpUNO(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_UNO, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpUEQ(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_UEQ, LHS, RHS, Name);
Value *CreateFCmpUEQ(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_UEQ, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpUGT(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_UGT, LHS, RHS, Name);
Value *CreateFCmpUGT(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_UGT, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpUGE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_UGE, LHS, RHS, Name);
Value *CreateFCmpUGE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_UGE, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpULT(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_ULT, LHS, RHS, Name);
Value *CreateFCmpULT(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_ULT, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpULE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_ULE, LHS, RHS, Name);
Value *CreateFCmpULE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_ULE, LHS, RHS, Name, FPMathTag);
}
Value *CreateFCmpUNE(Value *LHS, Value *RHS, const Twine &Name = "") {
return CreateFCmp(FCmpInst::FCMP_UNE, LHS, RHS, Name);
Value *CreateFCmpUNE(Value *LHS, Value *RHS, const Twine &Name = "",
MDNode *FPMathTag = nullptr) {
return CreateFCmp(FCmpInst::FCMP_UNE, LHS, RHS, Name, FPMathTag);
}
Value *CreateICmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
@@ -1433,11 +1447,12 @@ public:
return Insert(new ICmpInst(P, LHS, RHS), Name);
}
Value *CreateFCmp(CmpInst::Predicate P, Value *LHS, Value *RHS,
const Twine &Name = "") {
const Twine &Name = "", MDNode *FPMathTag = nullptr) {
if (Constant *LC = dyn_cast<Constant>(LHS))
if (Constant *RC = dyn_cast<Constant>(RHS))
return Insert(Folder.CreateFCmp(P, LC, RC), Name);
return Insert(new FCmpInst(P, LHS, RHS), Name);
return Insert(AddFPMathAttributes(new FCmpInst(P, LHS, RHS),
FPMathTag, FMF), Name);
}
//===--------------------------------------------------------------------===//

3
include/llvm/IR/Operator.h
View File

@@ -305,7 +305,8 @@ public:
float getFPAccuracy() const;
static inline bool classof(const Instruction *I) {
return I->getType()->isFPOrFPVectorTy();
return I->getType()->isFPOrFPVectorTy() ||
I->getOpcode() == Instruction::FCmp;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));