[PATCH] D155374: [clang][Interp] Implement __builtin_isnormal

[Timm Bäder via Phabricator via cfe-commits]

tbaeder created this revision.
tbaeder added reviewers: aaron.ballman, erichkeane, shafik, cor3ntin.
Herald added a project: All.
tbaeder requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155374

Files:
  clang/lib/AST/Interp/Floating.h
  clang/lib/AST/Interp/InterpBuiltin.cpp
  clang/test/AST/Interp/builtin-functions.cpp


Index: clang/test/AST/Interp/builtin-functions.cpp
===================================================================
--- clang/test/AST/Interp/builtin-functions.cpp
+++ clang/test/AST/Interp/builtin-functions.cpp
@@ -69,4 +69,7 @@
 
   static_assert(__builtin_isfinite(1.0), "");
   static_assert(!__builtin_isfinite(__builtin_inf()), "");
+
+  static_assert(__builtin_isnormal(1.0), "");
+  static_assert(!__builtin_isnormal(__builtin_inf()), "");
 }
Index: clang/lib/AST/Interp/InterpBuiltin.cpp
===================================================================
--- clang/lib/AST/Interp/InterpBuiltin.cpp
+++ clang/lib/AST/Interp/InterpBuiltin.cpp
@@ -195,6 +195,15 @@
   return true;
 }
 
+static bool interp__builtin_isnormal(InterpState &S, CodePtr OpPC,
+                                     const InterpFrame *Frame,
+                                     const Function *F) {
+  const Floating &Arg = S.Stk.peek<Floating>();
+
+  S.Stk.push<Integral<32, true>>(Integral<32, true>::from(Arg.isNormal()));
+  return true;
+}
+
 bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F) {
   InterpFrame *Frame = S.Current;
   APValue Dummy;
@@ -269,6 +278,10 @@
     if (interp__builtin_isfinite(S, OpPC, Frame, F))
       return Ret<PT_Sint32>(S, OpPC, Dummy);
     break;
+  case Builtin::BI__builtin_isnormal:
+    if (interp__builtin_isnormal(S, OpPC, Frame, F))
+      return Ret<PT_Sint32>(S, OpPC, Dummy);
+    break;
 
   default:
     return false;
Index: clang/lib/AST/Interp/Floating.h
===================================================================
--- clang/lib/AST/Interp/Floating.h
+++ clang/lib/AST/Interp/Floating.h
@@ -96,6 +96,7 @@
   bool isNan() const { return F.isNaN(); }
   bool isInf() const { return F.isInfinity(); }
   bool isFinite() const { return F.isFinite(); }
+  bool isNormal() const { return F.isNormal(); }
 
   ComparisonCategoryResult compare(const Floating &RHS) const {
     return Compare(F, RHS.F);


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