[clang] [clang][HLSL] Add radians intrinsic (PR #110802)
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Wed Oct 2 01:51:41 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
Author: Adam Yang (adam-yang)
<details>
<summary>Changes</summary>
partially fixes #<!-- -->99151
### Changes
* Implemented `radians` clang builtin
* Linked `radians` clang builtin with `hlsl_intrinsics.h`
* Added sema checks for `radians` to `CheckHLSLBuiltinFunctionCall` in `SemaChecking.cpp`
* Add codegen for `radians` to `EmitHLSLBuiltinExpr` in `CGBuiltin.cpp`
* Add codegen tests to `clang/test/CodeGenHLSL/builtins/radians.hlsl`
* Add sema tests to `clang/test/SemaHLSL/BuiltIns/radians-errors.hlsl`
### Related PRs
* [[DXIL] Add radians intrinsic #<!-- -->110616](https://github.com/llvm/llvm-project/pull/110616)
* [[SPIRV] Add radians intrinsic #<!-- -->110800](https://github.com/llvm/llvm-project/pull/110800)
---
Full diff: https://github.com/llvm/llvm-project/pull/110802.diff
7 Files Affected:
- (modified) clang/include/clang/Basic/Builtins.td (+6)
- (modified) clang/lib/CodeGen/CGBuiltin.cpp (+8)
- (modified) clang/lib/CodeGen/CGHLSLRuntime.h (+1)
- (modified) clang/lib/Headers/hlsl/hlsl_intrinsics.h (+30)
- (modified) clang/lib/Sema/SemaHLSL.cpp (+1)
- (added) clang/test/CodeGenHLSL/builtins/radians.hlsl (+66)
- (added) clang/test/SemaHLSL/BuiltIns/radians-errors.hlsl (+27)
``````````diff
diff --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index 8090119e512fbb..09b130e0def0d7 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -4788,6 +4788,12 @@ def HLSLStep: LangBuiltin<"HLSL_LANG"> {
let Prototype = "void(...)";
}
+def HLSLRadians : LangBuiltin<"HLSL_LANG"> {
+ let Spellings = ["__builtin_hlsl_elementwise_radians"];
+ let Attributes = [NoThrow, Const];
+ let Prototype = "void(...)";
+}
+
// Builtins for XRay.
def XRayCustomEvent : Builtin {
let Spellings = ["__xray_customevent"];
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index d739597de4c855..6c24c66a81e73c 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -18852,6 +18852,14 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
retType, CGM.getHLSLRuntime().getSignIntrinsic(),
ArrayRef<Value *>{Op0}, nullptr, "hlsl.sign");
}
+ case Builtin::BI__builtin_hlsl_elementwise_radians: {
+ Value *Op0 = EmitScalarExpr(E->getArg(0));
+ if (!E->getArg(0)->getType()->hasFloatingRepresentation())
+ llvm_unreachable("radians operand must have a float representation");
+ return Builder.CreateIntrinsic(
+ /*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getRadiansIntrinsic(),
+ ArrayRef<Value *>{Op0}, nullptr, "hlsl.radians");
+ }
}
return nullptr;
}
diff --git a/clang/lib/CodeGen/CGHLSLRuntime.h b/clang/lib/CodeGen/CGHLSLRuntime.h
index a8aabca7348ffb..c807a3216ec9ee 100644
--- a/clang/lib/CodeGen/CGHLSLRuntime.h
+++ b/clang/lib/CodeGen/CGHLSLRuntime.h
@@ -82,6 +82,7 @@ class CGHLSLRuntime {
GENERATE_HLSL_INTRINSIC_FUNCTION(Saturate, saturate)
GENERATE_HLSL_INTRINSIC_FUNCTION(Sign, sign)
GENERATE_HLSL_INTRINSIC_FUNCTION(Step, step)
+ GENERATE_HLSL_INTRINSIC_FUNCTION(Radians, radians)
GENERATE_HLSL_INTRINSIC_FUNCTION(ThreadId, thread_id)
GENERATE_HLSL_INTRINSIC_FUNCTION(FDot, fdot)
GENERATE_HLSL_INTRINSIC_FUNCTION(SDot, sdot)
diff --git a/clang/lib/Headers/hlsl/hlsl_intrinsics.h b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
index 810a16d75f0228..81b297723da3f5 100644
--- a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
+++ b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
@@ -2086,5 +2086,35 @@ _HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_sign)
int3 sign(double3);
_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_sign)
int4 sign(double4);
+
+//===----------------------------------------------------------------------===//
+// radians builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn T radians(T Val)
+/// \brief Converts the specified value from degrees to radians.
+
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+half radians(half);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+half2 radians(half2);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+half3 radians(half3);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+half4 radians(half4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+float radians(float);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+float2 radians(float2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+float3 radians(float3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_radians)
+float4 radians(float4);
+
} // namespace hlsl
#endif //_HLSL_HLSL_INTRINSICS_H_
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 43cc6c81ae5cb0..c0326cf280cf3f 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -1861,6 +1861,7 @@ bool SemaHLSL::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
return true;
break;
}
+ case Builtin::BI__builtin_hlsl_elementwise_radians:
case Builtin::BI__builtin_hlsl_elementwise_rsqrt:
case Builtin::BI__builtin_hlsl_elementwise_frac: {
if (CheckFloatOrHalfRepresentations(&SemaRef, TheCall))
diff --git a/clang/test/CodeGenHLSL/builtins/radians.hlsl b/clang/test/CodeGenHLSL/builtins/radians.hlsl
new file mode 100644
index 00000000000000..774300525dbf02
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/radians.hlsl
@@ -0,0 +1,66 @@
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN: -emit-llvm -disable-llvm-passes -o - | FileCheck %s \
+// RUN: --check-prefixes=CHECK,NATIVE_HALF \
+// RUN: -DTARGET=dx -DFNATTRS=noundef
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -emit-llvm -disable-llvm-passes \
+// RUN: -o - | FileCheck %s --check-prefixes=CHECK,NO_HALF \
+// RUN: -DTARGET=dx -DFNATTRS=noundef
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN: spirv-unknown-vulkan-compute %s -fnative-half-type \
+// RUN: -emit-llvm -disable-llvm-passes -o - | FileCheck %s \
+// RUN: --check-prefixes=CHECK,NATIVE_HALF \
+// RUN: -DTARGET=spv -DFNATTRS="spir_func noundef"
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN: spirv-unknown-vulkan-compute %s -emit-llvm -disable-llvm-passes \
+// RUN: -o - | FileCheck %s --check-prefixes=CHECK,NO_HALF \
+// RUN: -DTARGET=spv -DFNATTRS="spir_func noundef"
+
+
+// NATIVE_HALF: define [[FNATTRS]] half @
+// NATIVE_HALF: %{{.*}} = call half @llvm.[[TARGET]].radians.f16(
+// NATIVE_HALF: ret half %{{.*}}
+// NO_HALF: define [[FNATTRS]] float @
+// NO_HALF: %{{.*}} = call float @llvm.[[TARGET]].radians.f32(
+// NO_HALF: ret float %{{.*}}
+half test_radians_half(half p0) { return radians(p0); }
+// NATIVE_HALF: define [[FNATTRS]] <2 x half> @
+// NATIVE_HALF: %{{.*}} = call <2 x half> @llvm.[[TARGET]].radians.v2f16
+// NATIVE_HALF: ret <2 x half> %{{.*}}
+// NO_HALF: define [[FNATTRS]] <2 x float> @
+// NO_HALF: %{{.*}} = call <2 x float> @llvm.[[TARGET]].radians.v2f32(
+// NO_HALF: ret <2 x float> %{{.*}}
+half2 test_radians_half2(half2 p0) { return radians(p0); }
+// NATIVE_HALF: define [[FNATTRS]] <3 x half> @
+// NATIVE_HALF: %{{.*}} = call <3 x half> @llvm.[[TARGET]].radians.v3f16
+// NATIVE_HALF: ret <3 x half> %{{.*}}
+// NO_HALF: define [[FNATTRS]] <3 x float> @
+// NO_HALF: %{{.*}} = call <3 x float> @llvm.[[TARGET]].radians.v3f32(
+// NO_HALF: ret <3 x float> %{{.*}}
+half3 test_radians_half3(half3 p0) { return radians(p0); }
+// NATIVE_HALF: define [[FNATTRS]] <4 x half> @
+// NATIVE_HALF: %{{.*}} = call <4 x half> @llvm.[[TARGET]].radians.v4f16
+// NATIVE_HALF: ret <4 x half> %{{.*}}
+// NO_HALF: define [[FNATTRS]] <4 x float> @
+// NO_HALF: %{{.*}} = call <4 x float> @llvm.[[TARGET]].radians.v4f32(
+// NO_HALF: ret <4 x float> %{{.*}}
+half4 test_radians_half4(half4 p0) { return radians(p0); }
+
+// CHECK: define [[FNATTRS]] float @
+// CHECK: %{{.*}} = call float @llvm.[[TARGET]].radians.f32(
+// CHECK: ret float %{{.*}}
+float test_radians_float(float p0) { return radians(p0); }
+// CHECK: define [[FNATTRS]] <2 x float> @
+// CHECK: %{{.*}} = call <2 x float> @llvm.[[TARGET]].radians.v2f32
+// CHECK: ret <2 x float> %{{.*}}
+float2 test_radians_float2(float2 p0) { return radians(p0); }
+// CHECK: define [[FNATTRS]] <3 x float> @
+// CHECK: %{{.*}} = call <3 x float> @llvm.[[TARGET]].radians.v3f32
+// CHECK: ret <3 x float> %{{.*}}
+float3 test_radians_float3(float3 p0) { return radians(p0); }
+// CHECK: define [[FNATTRS]] <4 x float> @
+// CHECK: %{{.*}} = call <4 x float> @llvm.[[TARGET]].radians.v4f32
+// CHECK: ret <4 x float> %{{.*}}
+float4 test_radians_float4(float4 p0) { return radians(p0); }
+
diff --git a/clang/test/SemaHLSL/BuiltIns/radians-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/radians-errors.hlsl
new file mode 100644
index 00000000000000..1d315c486d7250
--- /dev/null
+++ b/clang/test/SemaHLSL/BuiltIns/radians-errors.hlsl
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm-only -disable-llvm-passes -verify -verify-ignore-unexpected
+
+float test_too_few_arg() {
+ return __builtin_hlsl_elementwise_radians();
+ // expected-error at -1 {{too few arguments to function call, expected 1, have 0}}
+}
+
+float2 test_too_many_arg(float2 p0) {
+ return __builtin_hlsl_elementwise_radians(p0, p0);
+ // expected-error at -1 {{too many arguments to function call, expected 1, have 2}}
+}
+
+float builtin_bool_to_float_type_promotion(bool p1) {
+ return __builtin_hlsl_elementwise_radians(p1);
+ // expected-error at -1 {passing 'bool' to parameter of incompatible type 'float'}}
+}
+
+float builtin_radians_int_to_float_promotion(int p1) {
+ return __builtin_hlsl_elementwise_radians(p1);
+ // expected-error at -1 {{passing 'int' to parameter of incompatible type 'float'}}
+}
+
+float2 builtin_radians_int2_to_float2_promotion(int2 p1) {
+ return __builtin_hlsl_elementwise_radians(p1);
+ // expected-error at -1 {{passing 'int2' (aka 'vector<int, 2>') to parameter of incompatible type '__attribute__((__vector_size__(2 * sizeof(float)))) float' (vector of 2 'float' values)}}
+}
+
``````````
</details>
https://github.com/llvm/llvm-project/pull/110802
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