[clang] 602d43c - [Clang][AMDGPU] Add the missing builtin `__builtin_amdgcn_sqrt_bf16` (#149447)

[via cfe-commits]

Author: Shilei Tian
Date: 2025-07-18T08:43:08-04:00
New Revision: 602d43cfd1fe7cc47146b6327d8df6e5e0ec47ae

URL: https://github.com/llvm/llvm-project/commit/602d43cfd1fe7cc47146b6327d8df6e5e0ec47ae
DIFF: https://github.com/llvm/llvm-project/commit/602d43cfd1fe7cc47146b6327d8df6e5e0ec47ae.diff

LOG: [Clang][AMDGPU] Add the missing builtin `__builtin_amdgcn_sqrt_bf16` (#149447)

Co-authored-by: Mekhanoshin, Stanislav <Stanislav.Mekhanoshin at amd.com>

Added: 
    

Modified: 
    clang/include/clang/Basic/BuiltinsAMDGPU.def
    clang/lib/CodeGen/TargetBuiltins/AMDGPU.cpp
    clang/test/CodeGenOpenCL/builtins-amdgcn-gfx1250.cl

Removed: 
    


################################################################################
diff  --git a/clang/include/clang/Basic/BuiltinsAMDGPU.def b/clang/include/clang/Basic/BuiltinsAMDGPU.def
index ed51f1d5de447..a916af7e0c2df 100644
--- a/clang/include/clang/Basic/BuiltinsAMDGPU.def
+++ b/clang/include/clang/Basic/BuiltinsAMDGPU.def
@@ -673,6 +673,7 @@ TARGET_BUILTIN(__builtin_amdgcn_tanhf, "ff", "nc", "tanh-insts")
 TARGET_BUILTIN(__builtin_amdgcn_tanhh, "hh", "nc", "tanh-insts")
 TARGET_BUILTIN(__builtin_amdgcn_tanh_bf16, "yy", "nc", "bf16-trans-insts")
 TARGET_BUILTIN(__builtin_amdgcn_rcp_bf16, "yy", "nc", "bf16-trans-insts")
+TARGET_BUILTIN(__builtin_amdgcn_sqrt_bf16, "yy", "nc", "bf16-trans-insts")
 TARGET_BUILTIN(__builtin_amdgcn_rsq_bf16, "yy", "nc", "bf16-trans-insts")
 TARGET_BUILTIN(__builtin_amdgcn_log_bf16, "yy", "nc", "bf16-trans-insts")
 TARGET_BUILTIN(__builtin_amdgcn_exp2_bf16, "yy", "nc", "bf16-trans-insts")

diff  --git a/clang/lib/CodeGen/TargetBuiltins/AMDGPU.cpp b/clang/lib/CodeGen/TargetBuiltins/AMDGPU.cpp
index a7d796ecccc61..ee736a2816218 100644
--- a/clang/lib/CodeGen/TargetBuiltins/AMDGPU.cpp
+++ b/clang/lib/CodeGen/TargetBuiltins/AMDGPU.cpp
@@ -416,6 +416,7 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned BuiltinID,
   case AMDGPU::BI__builtin_amdgcn_sqrt:
   case AMDGPU::BI__builtin_amdgcn_sqrtf:
   case AMDGPU::BI__builtin_amdgcn_sqrth:
+  case AMDGPU::BI__builtin_amdgcn_sqrt_bf16:
     return emitBuiltinWithOneOverloadedType<1>(*this, E,
                                                Intrinsic::amdgcn_sqrt);
   case AMDGPU::BI__builtin_amdgcn_rsq:

diff  --git a/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx1250.cl b/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx1250.cl
index 738b7ab7f2b75..a9ea17642d6ad 100644
--- a/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx1250.cl
+++ b/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx1250.cl
@@ -119,6 +119,25 @@ void test_rcp_bf16(global __bf16* out, __bf16 a)
   *out = __builtin_amdgcn_rcp_bf16(a);
 }
 
+// CHECK-LABEL: @test_sqrt_bf16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[OUT_ADDR:%.*]] = alloca ptr addrspace(1), align 8, addrspace(5)
+// CHECK-NEXT:    [[A_ADDR:%.*]] = alloca bfloat, align 2, addrspace(5)
+// CHECK-NEXT:    [[OUT_ADDR_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[OUT_ADDR]] to ptr
+// CHECK-NEXT:    [[A_ADDR_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[A_ADDR]] to ptr
+// CHECK-NEXT:    store ptr addrspace(1) [[OUT:%.*]], ptr [[OUT_ADDR_ASCAST]], align 8
+// CHECK-NEXT:    store bfloat [[A:%.*]], ptr [[A_ADDR_ASCAST]], align 2
+// CHECK-NEXT:    [[TMP0:%.*]] = load bfloat, ptr [[A_ADDR_ASCAST]], align 2
+// CHECK-NEXT:    [[TMP1:%.*]] = call bfloat @llvm.amdgcn.sqrt.bf16(bfloat [[TMP0]])
+// CHECK-NEXT:    [[TMP2:%.*]] = load ptr addrspace(1), ptr [[OUT_ADDR_ASCAST]], align 8
+// CHECK-NEXT:    store bfloat [[TMP1]], ptr addrspace(1) [[TMP2]], align 2
+// CHECK-NEXT:    ret void
+//
+void test_sqrt_bf16(global __bf16* out, __bf16 a)
+{
+  *out = __builtin_amdgcn_sqrt_bf16(a);
+}
+
 // CHECK-LABEL: @test_rsq_bf16(
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    [[OUT_ADDR:%.*]] = alloca ptr addrspace(1), align 8, addrspace(5)