[IR][ADT] Remove APFloat/Type::isIEEE (#130496)

Address comment
#130477 (comment).

Author: dtcxzyw

llvm/include/llvm/ADT/APFloat.h

@@ -1465,7 +1465,6 @@ class APFloat : public APFloatBase {
   bool isSmallest() const { APFLOAT_DISPATCH_ON_SEMANTICS(isSmallest()); }
   bool isLargest() const { APFLOAT_DISPATCH_ON_SEMANTICS(isLargest()); }
   bool isInteger() const { APFLOAT_DISPATCH_ON_SEMANTICS(isInteger()); }
-  bool isIEEE() const { return usesLayout<IEEEFloat>(getSemantics()); }
 
   bool isSmallestNormalized() const {
     APFLOAT_DISPATCH_ON_SEMANTICS(isSmallestNormalized());

llvm/include/llvm/IR/Type.h

@@ -165,8 +165,8 @@ class Type {
   bool isPPC_FP128Ty() const { return getTypeID() == PPC_FP128TyID; }
 
   /// Return true if this is a well-behaved IEEE-like type, which has a IEEE
-  /// compatible layout as defined by APFloat::isIEEE(), and does not have
-  /// non-IEEE values, such as x86_fp80's unnormal values.
+  /// compatible layout, and does not have non-IEEE values, such as x86_fp80's
+  /// unnormal values.
   bool isIEEELikeFPTy() const {
     switch (getTypeID()) {
     case DoubleTyID:
@@ -346,10 +346,6 @@ class Type {
   /// ppc long double), this method returns -1.
   int getFPMantissaWidth() const;
 
-  /// Return whether the type is IEEE compatible, as defined by the eponymous
-  /// method in APFloat.
-  bool isIEEE() const;
-
   /// If this is a vector type, return the element type, otherwise return
   /// 'this'.
   inline Type *getScalarType() const {

llvm/include/llvm/SandboxIR/Type.h

@@ -120,8 +120,8 @@ class Type {
   bool isPPC_FP128Ty() const { return LLVMTy->isPPC_FP128Ty(); }
 
   /// Return true if this is a well-behaved IEEE-like type, which has a IEEE
-  /// compatible layout as defined by APFloat::isIEEE(), and does not have
-  /// non-IEEE values, such as x86_fp80's unnormal values.
+  /// compatible layout, and does not have non-IEEE values, such as x86_fp80's
+  /// unnormal values.
   bool isIEEELikeFPTy() const { return LLVMTy->isIEEELikeFPTy(); }
 
   /// Return true if this is one of the floating-point types
@@ -262,10 +262,6 @@ class Type {
   /// ppc long double), this method returns -1.
   int getFPMantissaWidth() const { return LLVMTy->getFPMantissaWidth(); }
 
-  /// Return whether the type is IEEE compatible, as defined by the eponymous
-  /// method in APFloat.
-  bool isIEEE() const { return LLVMTy->isIEEE(); }
-
   /// If this is a vector type, return the element type, otherwise return
   /// 'this'.
   Type *getScalarType() const;

llvm/lib/IR/Type.cpp

@@ -117,10 +117,6 @@ const fltSemantics &Type::getFltSemantics() const {
   }
 }
 
-bool Type::isIEEE() const {
-  return APFloat::getZero(getFltSemantics()).isIEEE();
-}
-
 bool Type::isScalableTargetExtTy() const {
   if (auto *TT = dyn_cast<TargetExtType>(this))
     return isa<ScalableVectorType>(TT->getLayoutType());

llvm/unittests/SandboxIR/TypesTest.cpp

@@ -180,8 +180,8 @@ define void @foo(i32 %v0) {
   EXPECT_EQ(VecTy32x2->getScalarSizeInBits(), 32u);
   // Check getFPMantissaWidth().
   EXPECT_EQ(FloatTy->getFPMantissaWidth(), LLVMFloatTy->getFPMantissaWidth());
-  // Check isIEEE().
-  EXPECT_EQ(FloatTy->isIEEE(), LLVMFloatTy->isIEEE());
+  // Check isIEEELikeFPTy().
+  EXPECT_EQ(FloatTy->isIEEELikeFPTy(), LLVMFloatTy->isIEEELikeFPTy());
   // Check getScalarType().
   EXPECT_EQ(
       Ctx.getType(llvm::FixedVectorType::get(LLVMInt32Ty, 8u))->getScalarType(),