[PATCH] D155368: [clang][Interp] __builtin_copysign

[Timm Bäder via Phabricator via cfe-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG57ca62d5d35a: [clang][Interp] Implement __builtin_copysign (authored by tbaeder).

Changed prior to commit:
  https://reviews.llvm.org/D155368?vs=541325&id=545065#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155368/new/

https://reviews.llvm.org/D155368

Files:
  clang/lib/AST/Interp/InterpBuiltin.cpp


Index: clang/lib/AST/Interp/InterpBuiltin.cpp
===================================================================
--- clang/lib/AST/Interp/InterpBuiltin.cpp
+++ clang/lib/AST/Interp/InterpBuiltin.cpp
@@ -130,6 +130,19 @@
   return true;
 }
 
+static bool interp__builtin_copysign(InterpState &S, CodePtr OpPC,
+                                     const InterpFrame *Frame,
+                                     const Function *F) {
+  const Floating &Arg1 = getParam<Floating>(Frame, 0);
+  const Floating &Arg2 = getParam<Floating>(Frame, 1);
+
+  APFloat Copy = Arg1.getAPFloat();
+  Copy.copySign(Arg2.getAPFloat());
+  S.Stk.push<Floating>(Floating(Copy));
+
+  return true;
+}
+
 bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F) {
   InterpFrame *Frame = S.Current;
   APValue Dummy;
@@ -174,6 +187,13 @@
     if (interp__builtin_inf(S, OpPC, Frame, F))
       return Ret<PT_Float>(S, OpPC, Dummy);
     break;
+  case Builtin::BI__builtin_copysign:
+  case Builtin::BI__builtin_copysignf:
+  case Builtin::BI__builtin_copysignl:
+  case Builtin::BI__builtin_copysignf128:
+    if (interp__builtin_copysign(S, OpPC, Frame, F))
+      return Ret<PT_Float>(S, OpPC, Dummy);
+    break;
 
   default:
     return false;


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