Add math-libcalls test

Author: MacDue

clang/lib/CodeGen/CGBuiltin.cpp

@@ -3385,6 +3385,8 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
     case Builtin::BI__builtin_sincosf16:
     case Builtin::BI__builtin_sincosl:
     case Builtin::BI__builtin_sincosf128:
+      if (Builder.getIsFPConstrained())
+        break; // TODO: Emit constrained sincos intrinsic once one exists.
       emitSincosBuiltin(*this, E, Intrinsic::sincos);
       return RValue::get(nullptr);
 

clang/test/CodeGen/math-libcalls.c

@@ -660,6 +660,17 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c) {
 // HAS_MAYTRAP: declare float @llvm.experimental.constrained.sinh.f32(
 // HAS_MAYTRAP: declare x86_fp80 @llvm.experimental.constrained.sinh.f80(
 
+sincos(f, d, d);       sincosf(f, fp, fp);        sincosl(f, l, l);
+
+// NO__ERRNO: declare { double, double } @llvm.sincos.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare { float, float } @llvm.sincos.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare { x86_fp80, x86_fp80 } @llvm.sincos.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// HAS_ERRNO: declare void @sincos(double noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
+// HAS_ERRNO: declare void @sincosf(float noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
+// HAS_ERRNO: declare void @sincosl(x86_fp80 noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
+// HAS_MAYTRAP: declare void @sincos(double noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
+// HAS_MAYTRAP: declare void @sincosf(float noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
+// HAS_MAYTRAP: declare void @sincosl(x86_fp80 noundef, ptr noundef, ptr noundef) [[NOT_READNONE]]
 
   sqrt(f);       sqrtf(f);      sqrtl(f);