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[IR] Remove CastInst::isCastable since it is not used

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It was removed back in 2013 (f63dfbb) by Matt Arsenault but then
reverted since DragonEgg used it, but that project is no longer
maintained.

Reviewed By: ldionne, dexonsmith

Differential Revision: https://reviews.llvm.org/D92571
This commit is contained in:
Cullen Rhodes 2020-12-03 11:05:51 +00:00
parent 0fd5aa6df8
commit 73794ea227
3 changed files with 0 additions and 71 deletions
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6
include/llvm/IR/InstrTypes.h
View File

@ -599,12 +599,6 @@ public:
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// Check whether it is valid to call getCastOpcode for these types.
static bool isCastable(
Type *SrcTy, ///< The Type from which the value should be cast.
Type *DestTy ///< The Type to which the value should be cast.
);
/// Check whether a bitcast between these types is valid
static bool isBitCastable(
Type *SrcTy, ///< The Type from which the value should be cast.

59
lib/IR/Instructions.cpp
View File

@ -3142,64 +3142,6 @@ CastInst *CastInst::CreateFPCast(Value *C, Type *Ty,
return Create(opcode, C, Ty, Name, InsertAtEnd);
}
// Check whether it is valid to call getCastOpcode for these types.
// This routine must be kept in sync with getCastOpcode.
bool CastInst::isCastable(Type *SrcTy, Type *DestTy) {
if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
return false;
if (SrcTy == DestTy)
return true;
if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy))
if (VectorType *DestVecTy = dyn_cast<VectorType>(DestTy))
if (cast<FixedVectorType>(SrcVecTy)->getNumElements() ==
cast<FixedVectorType>(DestVecTy)->getNumElements()) {
// An element by element cast. Valid if casting the elements is valid.
SrcTy = SrcVecTy->getElementType();
DestTy = DestVecTy->getElementType();
}
// Get the bit sizes, we'll need these
TypeSize SrcBits = SrcTy->getPrimitiveSizeInBits(); // 0 for ptr
TypeSize DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr
// Run through the possibilities ...
if (DestTy->isIntegerTy()) { // Casting to integral
if (SrcTy->isIntegerTy()) // Casting from integral
return true;
if (SrcTy->isFloatingPointTy()) // Casting from floating pt
return true;
if (SrcTy->isVectorTy()) // Casting from vector
return DestBits == SrcBits;
// Casting from something else
return SrcTy->isPointerTy();
}
if (DestTy->isFloatingPointTy()) { // Casting to floating pt
if (SrcTy->isIntegerTy()) // Casting from integral
return true;
if (SrcTy->isFloatingPointTy()) // Casting from floating pt
return true;
if (SrcTy->isVectorTy()) // Casting from vector
return DestBits == SrcBits;
// Casting from something else
return false;
}
if (DestTy->isVectorTy()) // Casting to vector
return DestBits == SrcBits;
if (DestTy->isPointerTy()) { // Casting to pointer
if (SrcTy->isPointerTy()) // Casting from pointer
return true;
return SrcTy->isIntegerTy(); // Casting from integral
}
if (DestTy->isX86_MMXTy()) {
if (SrcTy->isVectorTy())
return DestBits == SrcBits; // 64-bit vector to MMX
return false;
} // Casting to something else
return false;
}
bool CastInst::isBitCastable(Type *SrcTy, Type *DestTy) {
if (!SrcTy->isFirstClassType() || !DestTy->isFirstClassType())
return false;
@ -3261,7 +3203,6 @@ bool CastInst::isBitOrNoopPointerCastable(Type *SrcTy, Type *DestTy,
// castIsValid( getCastOpcode(Val, Ty), Val, Ty)
// should not assert in castIsValid. In other words, this produces a "correct"
// casting opcode for the arguments passed to it.
// This routine must be kept in sync with isCastable.
Instruction::CastOps
CastInst::getCastOpcode(
const Value *Src, bool SrcIsSigned, Type *DestTy, bool DestIsSigned) {

6
unittests/IR/InstructionsTest.cpp
View File

@ -229,11 +229,6 @@ TEST(InstructionsTest, CastInst) {
const Constant *v2ptr32 = Constant::getNullValue(V2Int32PtrTy);
EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
@ -249,7 +244,6 @@ TEST(InstructionsTest, CastInst) {
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, V2Int32PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int64PtrAS1Ty));
EXPECT_TRUE(CastInst::isCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
EXPECT_EQ(CastInst::AddrSpaceCast, CastInst::getCastOpcode(v2ptr32, true,
V2Int32PtrAS1Ty,
true));