[clang] Emit constraint intrinsics for arc and hyperbolic trig clang …

…builtins (#98949)

## Change(s)
- `Builtins.td` - Add f16 support for libm arc and hyperbolic trig
functions
- `CGBuiltin.cpp` - Emit constraint intrinsics for trig clang builtins

## History
This change is part of an implementation of
#87367 investigation on
supporting IEEE math operations as intrinsics. Which was discussed in
this RFC:
https://discourse.llvm.org/t/rfc-all-the-math-intrinsics/78294

This change adds wasm lowering cases for `acos`, `asin`, `atan`, `cosh`,
`sinh`, and `tanh`.

#70079
#70080
#70081
#70083
#70084
#95966

## Precursor PR(s)

Note this PR needs Merge after:
- #98937
- #98755

clang/include/clang/Basic/Builtins.td

@@ -83,11 +83,11 @@ class BitInt_Long_LongLongTemplate :
 // - _Constant: Argument has to constant-fold to an integer constant expression
 
 // __fp16 and __float128 builtin variants of libc/libm functions.
-def AcosF128 : Builtin {
-  let Spellings = ["__builtin_acosf128"];
+def AcosF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_acos"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow,
                     ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def AcoshF128 : Builtin {
@@ -97,11 +97,11 @@ def AcoshF128 : Builtin {
   let Prototype = "__float128(__float128)";
 }
 
-def AsinF128 : Builtin {
-  let Spellings = ["__builtin_asinf128"];
+def AsinF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_asin"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow,
                     ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def AsinhF128 : Builtin {
@@ -111,11 +111,11 @@ def AsinhF128 : Builtin {
   let Prototype = "__float128(__float128)";
 }
 
-def AtanF128 : Builtin {
-  let Spellings = ["__builtin_atanf128"];
+def AtanF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_atan"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow,
                     ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def AtanhF128 : Builtin {
@@ -143,10 +143,10 @@ def CosF16F128 : Builtin, F16F128MathTemplate {
   let Prototype = "T(T)";
 }
 
-def CoshF128 : Builtin {
-  let Spellings = ["__builtin_coshf128"];
+def CoshF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_cosh"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow, ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def ErfF128 : Builtin {
@@ -468,11 +468,11 @@ def SinF16F128 : Builtin, F16F128MathTemplate {
   let Prototype = "T(T)";
 }
 
-def SinhF128 : Builtin {
-  let Spellings = ["__builtin_sinhf128"];
+def SinhF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_sinh"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow,
                     ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def SqrtF16F128 : Builtin, F16F128MathTemplate {
@@ -489,11 +489,11 @@ def TanF16F128 : Builtin, F16F128MathTemplate {
   let Prototype = "T(T)";
 }
 
-def TanhF128 : Builtin {
-  let Spellings = ["__builtin_tanhf128"];
+def TanhF16F128 : Builtin, F16F128MathTemplate {
+  let Spellings = ["__builtin_tanh"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow,
                     ConstIgnoringErrnoAndExceptions];
-  let Prototype = "__float128(__float128)";
+  let Prototype = "T(T)";
 }
 
 def TgammaF128 : Builtin {

clang/lib/CodeGen/CGBuiltin.cpp

@@ -2667,6 +2667,39 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
   }
   if (GenerateIntrinsics) {
     switch (BuiltinIDIfNoAsmLabel) {
+    case Builtin::BIacos:
+    case Builtin::BIacosf:
+    case Builtin::BIacosl:
+    case Builtin::BI__builtin_acos:
+    case Builtin::BI__builtin_acosf:
+    case Builtin::BI__builtin_acosf16:
+    case Builtin::BI__builtin_acosl:
+    case Builtin::BI__builtin_acosf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::acos, Intrinsic::experimental_constrained_acos));
+
+    case Builtin::BIasin:
+    case Builtin::BIasinf:
+    case Builtin::BIasinl:
+    case Builtin::BI__builtin_asin:
+    case Builtin::BI__builtin_asinf:
+    case Builtin::BI__builtin_asinf16:
+    case Builtin::BI__builtin_asinl:
+    case Builtin::BI__builtin_asinf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::asin, Intrinsic::experimental_constrained_asin));
+
+    case Builtin::BIatan:
+    case Builtin::BIatanf:
+    case Builtin::BIatanl:
+    case Builtin::BI__builtin_atan:
+    case Builtin::BI__builtin_atanf:
+    case Builtin::BI__builtin_atanf16:
+    case Builtin::BI__builtin_atanl:
+    case Builtin::BI__builtin_atanf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::atan, Intrinsic::experimental_constrained_atan));
+
     case Builtin::BIceil:
     case Builtin::BIceilf:
     case Builtin::BIceill:
@@ -2702,6 +2735,17 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
                                    Intrinsic::cos,
                                    Intrinsic::experimental_constrained_cos));
 
+    case Builtin::BIcosh:
+    case Builtin::BIcoshf:
+    case Builtin::BIcoshl:
+    case Builtin::BI__builtin_cosh:
+    case Builtin::BI__builtin_coshf:
+    case Builtin::BI__builtin_coshf16:
+    case Builtin::BI__builtin_coshl:
+    case Builtin::BI__builtin_coshf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::cosh, Intrinsic::experimental_constrained_cosh));
+
     case Builtin::BIexp:
     case Builtin::BIexpf:
     case Builtin::BIexpl:
@@ -2918,6 +2962,17 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
                                    Intrinsic::sin,
                                    Intrinsic::experimental_constrained_sin));
 
+    case Builtin::BIsinh:
+    case Builtin::BIsinhf:
+    case Builtin::BIsinhl:
+    case Builtin::BI__builtin_sinh:
+    case Builtin::BI__builtin_sinhf:
+    case Builtin::BI__builtin_sinhf16:
+    case Builtin::BI__builtin_sinhl:
+    case Builtin::BI__builtin_sinhf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::sinh, Intrinsic::experimental_constrained_sinh));
+
     case Builtin::BIsqrt:
     case Builtin::BIsqrtf:
     case Builtin::BIsqrtl:
@@ -2944,6 +2999,17 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
       return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
           *this, E, Intrinsic::tan, Intrinsic::experimental_constrained_tan));
 
+    case Builtin::BItanh:
+    case Builtin::BItanhf:
+    case Builtin::BItanhl:
+    case Builtin::BI__builtin_tanh:
+    case Builtin::BI__builtin_tanhf:
+    case Builtin::BI__builtin_tanhf16:
+    case Builtin::BI__builtin_tanhl:
+    case Builtin::BI__builtin_tanhf128:
+      return RValue::get(emitUnaryMaybeConstrainedFPBuiltin(
+          *this, E, Intrinsic::tanh, Intrinsic::experimental_constrained_tanh));
+
     case Builtin::BItrunc:
     case Builtin::BItruncf:
     case Builtin::BItruncl:

clang/test/CodeGen/X86/math-builtins.c

@@ -168,10 +168,10 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c) {
   /* math */
   __builtin_acos(f);       __builtin_acosf(f);      __builtin_acosl(f); __builtin_acosf128(f);
 
-// NO__ERRNO: declare double @acos(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @acosf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @acosl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @acosf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.acos.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.acos.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.acos.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.acos.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @acos(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @acosf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @acosl(x86_fp80 noundef) [[NOT_READNONE]]
@@ -190,10 +190,10 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c) {
 
   __builtin_asin(f);       __builtin_asinf(f);      __builtin_asinl(f); __builtin_asinf128(f);
 
-// NO__ERRNO: declare double @asin(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @asinf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @asinl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @asinf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.asin.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.asin.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.asin.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.asin.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @asin(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @asinf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @asinl(x86_fp80 noundef) [[NOT_READNONE]]
@@ -212,10 +212,10 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c) {
 
   __builtin_atan(f);       __builtin_atanf(f);      __builtin_atanl(f); __builtin_atanf128(f);
 
-// NO__ERRNO: declare double @atan(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @atanf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @atanl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @atanf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.atan.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.atan.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.atan.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.atan.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @atan(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @atanf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @atanl(x86_fp80 noundef) [[NOT_READNONE]]
@@ -267,10 +267,10 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c) {
 
   __builtin_cosh(f);       __builtin_coshf(f);      __builtin_coshl(f); __builtin_coshf128(f);
 
-// NO__ERRNO: declare double @cosh(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @coshf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @coshl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @coshf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.cosh.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.cosh.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.cosh.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.cosh.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @cosh(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @coshf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @coshl(x86_fp80 noundef) [[NOT_READNONE]]
@@ -656,10 +656,10 @@ __builtin_sin(f);        __builtin_sinf(f);       __builtin_sinl(f); __builtin_s
 
 __builtin_sinh(f);       __builtin_sinhf(f);      __builtin_sinhl(f); __builtin_sinhf128(f);
 
-// NO__ERRNO: declare double @sinh(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @sinhf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @sinhl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @sinhf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.sinh.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.sinh.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.sinh.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.sinh.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @sinh(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @sinhf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @sinhl(x86_fp80 noundef) [[NOT_READNONE]]
@@ -689,10 +689,10 @@ __builtin_tan(f);        __builtin_tanf(f);       __builtin_tanl(f); __builtin_t
 
 __builtin_tanh(f);       __builtin_tanhf(f);      __builtin_tanhl(f); __builtin_tanhf128(f);
 
-// NO__ERRNO: declare double @tanh(double noundef) [[READNONE]]
-// NO__ERRNO: declare float @tanhf(float noundef) [[READNONE]]
-// NO__ERRNO: declare x86_fp80 @tanhl(x86_fp80 noundef) [[READNONE]]
-// NO__ERRNO: declare fp128 @tanhf128(fp128 noundef) [[READNONE]]
+// NO__ERRNO: declare double @llvm.tanh.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare float @llvm.tanh.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare x86_fp80 @llvm.tanh.f80(x86_fp80) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare fp128 @llvm.tanh.f128(fp128) [[READNONE_INTRINSIC]]
 // HAS_ERRNO: declare double @tanh(double noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare float @tanhf(float noundef) [[NOT_READNONE]]
 // HAS_ERRNO: declare x86_fp80 @tanhl(x86_fp80 noundef) [[NOT_READNONE]]

clang/test/CodeGen/constrained-math-builtins.c

@@ -36,6 +36,27 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c, _
 // CHECK: call float @llvm.experimental.constrained.ldexp.f32.i32(float %{{.*}}, i32 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 // CHECK: call x86_fp80 @llvm.experimental.constrained.ldexp.f80.i32(x86_fp80 %{{.*}}, i32 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 
+  __builtin_acos(f);        __builtin_acosf(f);       __builtin_acosl(f); __builtin_acosf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.acos.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.acos.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.acos.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.acos.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+
+__builtin_asin(f);        __builtin_asinf(f);       __builtin_asinl(f); __builtin_asinf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.asin.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.asin.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.asin.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.asin.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+
+__builtin_atan(f);        __builtin_atanf(f);       __builtin_atanl(f); __builtin_atanf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.atan.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.atan.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.atan.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.atan.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+
   __builtin_ceil(f);       __builtin_ceilf(f);      __builtin_ceill(f); __builtin_ceilf128(f);
 
 // CHECK: call double @llvm.experimental.constrained.ceil.f64(double %{{.*}}, metadata !"fpexcept.strict")
@@ -50,6 +71,13 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c, _
 // CHECK: call x86_fp80 @llvm.experimental.constrained.cos.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 // CHECK: call fp128 @llvm.experimental.constrained.cos.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 
+  __builtin_cosh(f);        __builtin_coshf(f);       __builtin_coshl(f); __builtin_coshf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.cosh.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.cosh.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.cosh.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.cosh.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+
   __builtin_exp(f);        __builtin_expf(f);       __builtin_expl(f); __builtin_expf128(f);
 
 // CHECK: call double @llvm.experimental.constrained.exp.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
@@ -177,6 +205,13 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c, _
 // CHECK: call x86_fp80 @llvm.experimental.constrained.sin.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 // CHECK: call fp128 @llvm.experimental.constrained.sin.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 
+  __builtin_sinh(f);        __builtin_sinhf(f);       __builtin_sinhl(f); __builtin_sinhf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.sinh.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.sinh.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.sinh.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.sinh.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+
   __builtin_sqrt(f);       __builtin_sqrtf(f);      __builtin_sqrtl(f); __builtin_sqrtf128(f);
 
 // CHECK: call double @llvm.experimental.constrained.sqrt.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
@@ -191,6 +226,12 @@ void foo(double *d, float f, float *fp, long double *l, int *i, const char *c, _
 // CHECK: call x86_fp80 @llvm.experimental.constrained.tan.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 // CHECK: call fp128 @llvm.experimental.constrained.tan.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 
+  __builtin_tanh(f);        __builtin_tanhf(f);       __builtin_tanhl(f); __builtin_tanhf128(f);
+
+// CHECK: call double @llvm.experimental.constrained.tanh.f64(double %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call float @llvm.experimental.constrained.tanh.f32(float %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call x86_fp80 @llvm.experimental.constrained.tanh.f80(x86_fp80 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// CHECK: call fp128 @llvm.experimental.constrained.tanh.f128(fp128 %{{.*}}, metadata !"round.tonearest", metadata !"fpexcept.strict")
 
   __builtin_trunc(f);      __builtin_truncf(f);     __builtin_truncl(f); __builtin_truncf128(f);
 

clang/test/CodeGen/libcalls.c

@@ -85,17 +85,17 @@ void test_builtins(double d, float f, long double ld) {
   double atan_ = atan(d);
   long double atanl_ = atanl(ld);
   float atanf_ = atanf(f);
-// CHECK-NO: declare double @atan(double noundef) [[NUW_RN:#[0-9]+]]
-// CHECK-NO: declare x86_fp80 @atanl(x86_fp80 noundef) [[NUW_RN]]
-// CHECK-NO: declare float @atanf(float noundef) [[NUW_RN]]
+// CHECK-NO: declare double @llvm.atan.f64(double) [[NUW_RNI:#[0-9]+]]
+// CHECK-NO: declare x86_fp80 @llvm.atan.f80(x86_fp80) [[NUW_RNI]]
+// CHECK-NO: declare float @llvm.atan.f32(float) [[NUW_RNI]]
 // CHECK-YES: declare double @atan(double noundef) [[NUW:#[0-9]+]]
 // CHECK-YES: declare x86_fp80 @atanl(x86_fp80 noundef) [[NUW]]
 // CHECK-YES: declare float @atanf(float noundef) [[NUW]]
 
   double atan2_ = atan2(d, 2);
   long double atan2l_ = atan2l(ld, ld);
   float atan2f_ = atan2f(f, f);
-// CHECK-NO: declare double @atan2(double noundef, double noundef) [[NUW_RN]]
+// CHECK-NO: declare double @atan2(double noundef, double noundef) [[NUW_RN:#[0-9]+]]
 // CHECK-NO: declare x86_fp80 @atan2l(x86_fp80 noundef, x86_fp80 noundef) [[NUW_RN]]
 // CHECK-NO: declare float @atan2f(float noundef, float noundef) [[NUW_RN]]
 // CHECK-YES: declare double @atan2(double noundef, double noundef) [[NUW]]