llvmorg-github-actions[bot] wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clangir

Author: Ayokunle Amodu (ayokunle321)

<details>
<summary>Changes</summary>

Adds codegen for the following AMDGPU tanh builtins:

- __builtin_amdgcn_tanhf (float)
- __builtin_amdgcn_tanhh (half)
- __builtin_amdgcn_tanh_bf16 (bfloat16)

These are lowered to the corresponding `llvm.amdgcn.tanh` intrinsic. 

---
Full diff: https://github.com/llvm/llvm-project/pull/197852.diff


4 Files Affected:

- (modified) clang/lib/CIR/CodeGen/CIRGenBuiltinAMDGPU.cpp (+4-4) 
- (added) clang/test/CIR/CodeGenHIP/builtins-amdgcn-gfx1250.hip (+26) 
- (added) clang/test/CIR/CodeGenHIP/builtins-amdgcn-vi.hip (+65) 
- (modified) clang/test/CIR/CodeGenHIP/builtins-amdgcn.hip (+11-3) 


``````````diff
diff --git a/clang/lib/CIR/CodeGen/CIRGenBuiltinAMDGPU.cpp 
b/clang/lib/CIR/CodeGen/CIRGenBuiltinAMDGPU.cpp
index 04ab1c29b0d63..8d17fcabcea6a 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltinAMDGPU.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltinAMDGPU.cpp
@@ -350,10 +350,10 @@ CIRGenFunction::emitAMDGPUBuiltinExpr(unsigned builtinId,
   case AMDGPU::BI__builtin_amdgcn_tanhf:
   case AMDGPU::BI__builtin_amdgcn_tanhh:
   case AMDGPU::BI__builtin_amdgcn_tanh_bf16: {
-    cgm.errorNYI(expr->getSourceRange(),
-                 std::string("unimplemented AMDGPU builtin call: ") +
-                     getContext().BuiltinInfo.getName(builtinId));
-    return mlir::Value{};
+    mlir::Value src = emitScalarExpr(expr->getArg(0));
+    return builder.emitIntrinsicCallOp(getLoc(expr->getExprLoc()),
+                                       "amdgcn.tanh", src.getType(),
+                                       mlir::ValueRange{src});
   }
   case AMDGPU::BI__builtin_amdgcn_uicmp:
   case AMDGPU::BI__builtin_amdgcn_uicmpl:
diff --git a/clang/test/CIR/CodeGenHIP/builtins-amdgcn-gfx1250.hip 
b/clang/test/CIR/CodeGenHIP/builtins-amdgcn-gfx1250.hip
new file mode 100644
index 0000000000000..aca9cd45ee234
--- /dev/null
+++ b/clang/test/CIR/CodeGenHIP/builtins-amdgcn-gfx1250.hip
@@ -0,0 +1,26 @@
+#include "../CodeGenCUDA/Inputs/cuda.h"
+
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1250 -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1250 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
+// RUN:            -target-cpu gfx1250 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+//===----------------------------------------------------------------------===//
+// Test AMDGPU builtins
+//===----------------------------------------------------------------------===//
+
+// CIR-LABEL: @_Z14test_tanh_bf16PDF16bDF16b
+// CIR: cir.call_llvm_intrinsic "amdgcn.tanh" {{.*}} : (!cir.bf16) -> !cir.bf16
+// LLVM: define{{.*}} void @_Z14test_tanh_bf16PDF16bDF16b
+// LLVM: call{{.*}} bfloat @llvm.amdgcn.tanh.bf16(bfloat %{{.*}})
+__device__ void test_tanh_bf16(__bf16* out, __bf16 a) {
+  *out = __builtin_amdgcn_tanh_bf16(a);
+}
diff --git a/clang/test/CIR/CodeGenHIP/builtins-amdgcn-vi.hip 
b/clang/test/CIR/CodeGenHIP/builtins-amdgcn-vi.hip
new file mode 100644
index 0000000000000..8cbd3c48a58d5
--- /dev/null
+++ b/clang/test/CIR/CodeGenHIP/builtins-amdgcn-vi.hip
@@ -0,0 +1,65 @@
+#include "../CodeGenCUDA/Inputs/cuda.h"
+
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu tonga -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx900 -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1010 -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1012 -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu tonga -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx900 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1010 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
+// RUN:            -target-cpu gfx1012 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
+// RUN:            -target-cpu tonga -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
+// RUN:            -target-cpu gfx900 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
+// RUN:            -target-cpu gfx1010 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
+// RUN:            -target-cpu gfx1012 -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+//===----------------------------------------------------------------------===//
+// Test AMDGPU builtins
+//===----------------------------------------------------------------------===//
+
+// CIR-LABEL: @_Z13test_tanh_f16PDF16_DF16_
+// CIR: cir.call_llvm_intrinsic "amdgcn.tanh" {{.*}} : (!cir.f16) -> !cir.f16
+// LLVM: define{{.*}} void @_Z13test_tanh_f16PDF16_DF16_
+// LLVM: call{{.*}} half @llvm.{{((amdgcn.){0,1})}}tanh.f16(half %{{.*}})
+__device__ void test_tanh_f16(_Float16* out, _Float16 a) {
+  *out = __builtin_amdgcn_tanhh(a);
+}
diff --git a/clang/test/CIR/CodeGenHIP/builtins-amdgcn.hip 
b/clang/test/CIR/CodeGenHIP/builtins-amdgcn.hip
index 4a61fde7aa90c..c64f32be2444a 100644
--- a/clang/test/CIR/CodeGenHIP/builtins-amdgcn.hip
+++ b/clang/test/CIR/CodeGenHIP/builtins-amdgcn.hip
@@ -2,15 +2,15 @@
 
 // REQUIRES: amdgpu-registered-target
 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
-// RUN:            -target-cpu tahiti -fcuda-is-device -emit-cir %s -o %t.cir
+// RUN:            -target-cpu tahiti -target-feature +tanh-insts 
-fcuda-is-device -emit-cir %s -o %t.cir
 // RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
 
 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 -fclangir \
-// RUN:            -target-cpu tahiti -fcuda-is-device -emit-llvm %s -o 
%t-cir.ll
+// RUN:            -target-cpu tahiti --target-feature +tanh-insts 
fcuda-is-device -emit-llvm %s -o %t-cir.ll
 // RUN: FileCheck --check-prefix=LLVM --input-file=%t-cir.ll %s
 
 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x hip -std=c++11 \
-// RUN:            -target-cpu tahiti -fcuda-is-device -emit-llvm %s -o %t.ll
+// RUN:            -target-cpu tahiti -target-feature +tanh-insts 
-fcuda-is-device -emit-llvm %s -o %t.ll
 // RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
 
 
//===----------------------------------------------------------------------===//
@@ -71,3 +71,11 @@ __device__ void test_div_fmas_f64(double* out, double a, 
double b, double c, int
 __device__ void test_ds_swizzle(int* out, int a) {
   *out = __builtin_amdgcn_ds_swizzle(a, 32);
 }
+
+// CIR-LABEL: @_Z14test_tanhf_f32Pff
+// CIR: cir.call_llvm_intrinsic "amdgcn.tanh" {{.*}} : (!cir.float) -> 
!cir.float
+// LLVM: define{{.*}} void @_Z14test_tanhf_f32Pff
+// LLVM: call{{.*}} float @llvm.amdgcn.tanh.f32(float %{{.*}})
+__device__ void test_tanhf_f32(float* out, float a) {
+  *out = __builtin_amdgcn_tanhf(a);
+}

``````````

</details>


https://github.com/llvm/llvm-project/pull/197852
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