AMDGPU: Add builtins & codegen support for bitop3_b{16|32} of gfx950. (llvm#117823)

arsenm · pravinjagtap · pravinjagtap · commit 0825d696550f · 2025-01-21T21:00:19.000+05:30
Co-authored-by: Pravin Jagtap &lt;Pravin.Jagtap@amd.com&gt;
diff --git a/clang/include/clang/Basic/BuiltinsAMDGPU.def b/clang/include/clang/Basic/BuiltinsAMDGPU.def
@@ -612,6 +612,8 @@ TARGET_BUILTIN(__builtin_amdgcn_cvt_scalef32_sr_pk32_bf6_f32, "V6UiV32fUif", "nc
 TARGET_BUILTIN(__builtin_amdgcn_cvt_scalef32_sr_pk32_fp6_bf16, "V6UiV32yUif", "nc", "f16bf16-to-fp6bf6-cvt-scale-insts")
 TARGET_BUILTIN(__builtin_amdgcn_cvt_scalef32_sr_pk32_fp6_f16, "V6UiV32hUif", "nc", "f16bf16-to-fp6bf6-cvt-scale-insts")
 TARGET_BUILTIN(__builtin_amdgcn_cvt_scalef32_sr_pk32_fp6_f32, "V6UiV32fUif", "nc", "f16bf16-to-fp6bf6-cvt-scale-insts")
+TARGET_BUILTIN(__builtin_amdgcn_bitop3_b32, "iiiiIUc", "nc", "bitop3-insts")
+TARGET_BUILTIN(__builtin_amdgcn_bitop3_b16, "ssssIUc", "nc", "bitop3-insts")
 
 #undef BUILTIN
 #undef TARGET_BUILTIN
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -596,6 +596,18 @@ Value *emitBuiltinWithOneOverloadedType(CodeGenFunction &CGF, const CallExpr *E,
   return CGF.Builder.CreateCall(F, Args, Name);
 }
 
+// Emit an intrinsic that has 4 operands of the same type as its result.
+static Value *emitQuaternaryBuiltin(CodeGenFunction &CGF, const CallExpr *E,
+                                    unsigned IntrinsicID) {
+  llvm::Value *Src0 = CGF.EmitScalarExpr(E->getArg(0));
+  llvm::Value *Src1 = CGF.EmitScalarExpr(E->getArg(1));
+  llvm::Value *Src2 = CGF.EmitScalarExpr(E->getArg(2));
+  llvm::Value *Src3 = CGF.EmitScalarExpr(E->getArg(3));
+
+  Function *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
+  return CGF.Builder.CreateCall(F, {Src0, Src1, Src2, Src3});
+}
+
 // Emit an intrinsic that has 1 float or double operand, and 1 integer.
 static Value *emitFPIntBuiltin(CodeGenFunction &CGF,
                                const CallExpr *E,
@@ -19329,6 +19341,9 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned BuiltinID,
         Builder.CreateInsertElement(Insert0, Elt1, UINT64_C(1));
     return AsVector;
   }
+  case AMDGPU::BI__builtin_amdgcn_bitop3_b32:
+  case AMDGPU::BI__builtin_amdgcn_bitop3_b16:
+    return emitQuaternaryBuiltin(*this, E, Intrinsic::amdgcn_bitop3);
   case AMDGPU::BI__builtin_amdgcn_make_buffer_rsrc:
     return emitBuiltinWithOneOverloadedType<4>(
         *this, E, Intrinsic::amdgcn_make_buffer_rsrc);
diff --git a/clang/test/CodeGenOpenCL/amdgpu-features.cl b/clang/test/CodeGenOpenCL/amdgpu-features.cl
@@ -89,7 +89,7 @@
 // GFX941: "target-features"="+16-bit-insts,+atomic-buffer-global-pk-add-f16-insts,+atomic-ds-pk-add-16-insts,+atomic-fadd-rtn-insts,+atomic-flat-pk-add-16-insts,+atomic-global-pk-add-bf16-inst,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot2-insts,+dot3-insts,+dot4-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+fp8-conversion-insts,+fp8-insts,+gfx8-insts,+gfx9-insts,+gfx90a-insts,+gfx940-insts,+mai-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize64,+xf32-insts"
 // GFX942: "target-features"="+16-bit-insts,+atomic-buffer-global-pk-add-f16-insts,+atomic-ds-pk-add-16-insts,+atomic-fadd-rtn-insts,+atomic-flat-pk-add-16-insts,+atomic-global-pk-add-bf16-inst,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot2-insts,+dot3-insts,+dot4-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+fp8-conversion-insts,+fp8-insts,+gfx8-insts,+gfx9-insts,+gfx90a-insts,+gfx940-insts,+mai-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize64,+xf32-insts"
 // GFX9_4_Generic: "target-features"="+16-bit-insts,+atomic-buffer-global-pk-add-f16-insts,+atomic-ds-pk-add-16-insts,+atomic-fadd-rtn-insts,+atomic-flat-pk-add-16-insts,+atomic-global-pk-add-bf16-inst,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot2-insts,+dot3-insts,+dot4-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+gfx8-insts,+gfx9-insts,+gfx90a-insts,+gfx940-insts,+mai-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize64"
-// GFX950: "target-features"="+16-bit-insts,+ashr-pk-insts,+atomic-buffer-global-pk-add-f16-insts,+atomic-buffer-pk-add-bf16-inst,+atomic-ds-pk-add-16-insts,+atomic-fadd-rtn-insts,+atomic-flat-pk-add-16-insts,+atomic-global-pk-add-bf16-inst,+bf8-cvt-scale-insts,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot12-insts,+dot13-insts,+dot2-insts,+dot3-insts,+dot4-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+f16bf16-to-fp6bf6-cvt-scale-insts,+fp4-cvt-scale-insts,+fp6bf6-cvt-scale-insts,+fp8-conversion-insts,+fp8-cvt-scale-insts,+fp8-insts,+gfx8-insts,+gfx9-insts,+gfx90a-insts,+gfx940-insts,+gfx950-insts,+mai-insts,+permlane16-swap,+permlane32-swap,+prng-inst,+s-memrealtime,+s-memtime-inst,+wavefrontsize64"
+// GFX950: "target-features"="+16-bit-insts,+ashr-pk-insts,+atomic-buffer-global-pk-add-f16-insts,+atomic-buffer-pk-add-bf16-inst,+atomic-ds-pk-add-16-insts,+atomic-fadd-rtn-insts,+atomic-flat-pk-add-16-insts,+atomic-global-pk-add-bf16-inst,+bf8-cvt-scale-insts,+bitop3-insts,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot12-insts,+dot13-insts,+dot2-insts,+dot3-insts,+dot4-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+f16bf16-to-fp6bf6-cvt-scale-insts,+fp4-cvt-scale-insts,+fp6bf6-cvt-scale-insts,+fp8-conversion-insts,+fp8-cvt-scale-insts,+fp8-insts,+gfx8-insts,+gfx9-insts,+gfx90a-insts,+gfx940-insts,+gfx950-insts,+mai-insts,+permlane16-swap,+permlane32-swap,+prng-inst,+s-memrealtime,+s-memtime-inst,+wavefrontsize64"
 // GFX1010: "target-features"="+16-bit-insts,+ci-insts,+dl-insts,+dpp,+gfx10-insts,+gfx8-insts,+gfx9-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize32"
 // GFX1011: "target-features"="+16-bit-insts,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot2-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+gfx10-insts,+gfx8-insts,+gfx9-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize32"
 // GFX1012: "target-features"="+16-bit-insts,+ci-insts,+dl-insts,+dot1-insts,+dot10-insts,+dot2-insts,+dot5-insts,+dot6-insts,+dot7-insts,+dpp,+gfx10-insts,+gfx8-insts,+gfx9-insts,+s-memrealtime,+s-memtime-inst,+wavefrontsize32"
diff --git a/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx950-err.cl b/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx950-err.cl
@@ -11,6 +11,7 @@
 // REQUIRES: amdgpu-registered-target
 
 typedef unsigned int uint;
+typedef unsigned short ushort;
 typedef unsigned int uint2 __attribute__((ext_vector_type(2)));
 typedef half __attribute__((ext_vector_type(2))) half2;
 typedef short __attribute__((ext_vector_type(2))) short2;
@@ -21,7 +22,7 @@ typedef unsigned int __attribute__((ext_vector_type(6))) uint6;
 typedef half __attribute__((ext_vector_type(32))) half32;
 typedef __bf16 __attribute__((ext_vector_type(32))) bfloat32;
 
-void test(global uint* out, global uint2* out_v2u32, uint a, uint b, global half2* out_v2f16, global float* out_f32, float scale, global short2* out_v2i16, float src0, float src1,
+void test(global uint* out, global uint2* out_v2u32, uint a, uint b, uint c, global half2* out_v2f16, global float* out_f32, float scale, global short2* out_v2i16, float src0, float src1,
           float2 src0_v2f32, global float2* out_v2f32, half2 src0_v2f16, bfloat2 src0_v2bf16, global bfloat2* out_v2bf16, global float32* out_v32f32, uint6 src_v6i32,
           global half32 *out_v32f16, global bfloat32 *out_v32bf16) {
   *out = __builtin_amdgcn_prng_b32(a); // expected-error{{'__builtin_amdgcn_prng_b32' needs target feature prng-inst}}
@@ -58,4 +59,6 @@ void test(global uint* out, global uint2* out_v2u32, uint a, uint b, global half
   *out = __builtin_amdgcn_cvt_scalef32_sr_pk_fp4_f16(*out, src0_v2f16, 0, scale, 0); // expected-error{{'__builtin_amdgcn_cvt_scalef32_sr_pk_fp4_f16' needs target feature fp4-cvt-scale-insts}}
   *out = __builtin_amdgcn_cvt_scalef32_sr_pk_fp4_bf16(*out, src0_v2bf16, 0, scale, 0); // expected-error{{'__builtin_amdgcn_cvt_scalef32_sr_pk_fp4_bf16' needs target feature fp4-cvt-scale-insts}}
   *out = __builtin_amdgcn_cvt_scalef32_sr_pk_fp4_f32(*out, src0_v2f32, 0, scale, 0); // expected-error{{'__builtin_amdgcn_cvt_scalef32_sr_pk_fp4_f32' needs target feature fp4-cvt-scale-insts}}
+  *out = __builtin_amdgcn_bitop3_b32(a, b, c, 1); // expected-error {{'__builtin_amdgcn_bitop3_b32' needs target feature bitop3-insts}}
+  *out = __builtin_amdgcn_bitop3_b16((ushort)a, (ushort)b, (ushort)c, 1); // expected-error {{'__builtin_amdgcn_bitop3_b16' needs target feature bitop3-insts}}
 }
diff --git a/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx950.cl b/clang/test/CodeGenOpenCL/builtins-amdgcn-gfx950.cl
@@ -5,6 +5,7 @@
 #pragma OPENCL EXTENSION cl_khr_fp16 : enable
 
 typedef unsigned int uint;
+typedef unsigned short ushort;
 typedef unsigned int __attribute__((ext_vector_type(2))) uint2;
 typedef unsigned int __attribute__((ext_vector_type(6))) uint6;
 typedef __bf16 __attribute__((ext_vector_type(32))) bfloat32;
@@ -1658,3 +1659,47 @@ void test_cvt_scalef32_sr_fp8_f32(global unsigned *out, float src, uint seed, fl
   *out = __builtin_amdgcn_cvt_scalef32_sr_fp8_f32(*out, src, seed, scale, 1);
   *out = __builtin_amdgcn_cvt_scalef32_sr_fp8_f32(*out, src, seed, scale, 2);
 }
+
+// CHECK-LABEL: @test_bitop3_b32(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[OUT_ADDR:%.*]] = alloca ptr addrspace(1), align 8, addrspace(5)
+// CHECK-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4, addrspace(5)
+// CHECK-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4, addrspace(5)
+// CHECK-NEXT:    [[C_ADDR:%.*]] = alloca i32, align 4, addrspace(5)
+// CHECK-NEXT:    store ptr addrspace(1) [[OUT:%.*]], ptr addrspace(5) [[OUT_ADDR]], align 8
+// CHECK-NEXT:    store i32 [[A:%.*]], ptr addrspace(5) [[A_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[B:%.*]], ptr addrspace(5) [[B_ADDR]], align 4
+// CHECK-NEXT:    store i32 [[C:%.*]], ptr addrspace(5) [[C_ADDR]], align 4
+// CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr addrspace(5) [[A_ADDR]], align 4
+// CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr addrspace(5) [[B_ADDR]], align 4
+// CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr addrspace(5) [[C_ADDR]], align 4
+// CHECK-NEXT:    [[TMP3:%.*]] = call i32 @llvm.amdgcn.bitop3.i32(i32 [[TMP0]], i32 [[TMP1]], i32 [[TMP2]], i8 1)
+// CHECK-NEXT:    [[TMP4:%.*]] = load ptr addrspace(1), ptr addrspace(5) [[OUT_ADDR]], align 8
+// CHECK-NEXT:    store i32 [[TMP3]], ptr addrspace(1) [[TMP4]], align 4
+// CHECK-NEXT:    ret void
+//
+void test_bitop3_b32(global uint* out, uint a, uint b, uint c) {
+  *out = __builtin_amdgcn_bitop3_b32(a, b, c, 1);
+}
+
+// CHECK-LABEL: @test_bitop3_b16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[OUT_ADDR:%.*]] = alloca ptr addrspace(1), align 8, addrspace(5)
+// CHECK-NEXT:    [[A_ADDR:%.*]] = alloca i16, align 2, addrspace(5)
+// CHECK-NEXT:    [[B_ADDR:%.*]] = alloca i16, align 2, addrspace(5)
+// CHECK-NEXT:    [[C_ADDR:%.*]] = alloca i16, align 2, addrspace(5)
+// CHECK-NEXT:    store ptr addrspace(1) [[OUT:%.*]], ptr addrspace(5) [[OUT_ADDR]], align 8
+// CHECK-NEXT:    store i16 [[A:%.*]], ptr addrspace(5) [[A_ADDR]], align 2
+// CHECK-NEXT:    store i16 [[B:%.*]], ptr addrspace(5) [[B_ADDR]], align 2
+// CHECK-NEXT:    store i16 [[C:%.*]], ptr addrspace(5) [[C_ADDR]], align 2
+// CHECK-NEXT:    [[TMP0:%.*]] = load i16, ptr addrspace(5) [[A_ADDR]], align 2
+// CHECK-NEXT:    [[TMP1:%.*]] = load i16, ptr addrspace(5) [[B_ADDR]], align 2
+// CHECK-NEXT:    [[TMP2:%.*]] = load i16, ptr addrspace(5) [[C_ADDR]], align 2
+// CHECK-NEXT:    [[TMP3:%.*]] = call i16 @llvm.amdgcn.bitop3.i16(i16 [[TMP0]], i16 [[TMP1]], i16 [[TMP2]], i8 1)
+// CHECK-NEXT:    [[TMP4:%.*]] = load ptr addrspace(1), ptr addrspace(5) [[OUT_ADDR]], align 8
+// CHECK-NEXT:    store i16 [[TMP3]], ptr addrspace(1) [[TMP4]], align 2
+// CHECK-NEXT:    ret void
+//
+void test_bitop3_b16(global ushort* out, ushort a, ushort b, ushort c) {
+  *out = __builtin_amdgcn_bitop3_b16(a, b, c, 1);
+}
diff --git a/clang/test/SemaOpenCL/builtins-amdgcn-error-gfx950-param.cl b/clang/test/SemaOpenCL/builtins-amdgcn-error-gfx950-param.cl
@@ -15,6 +15,7 @@ typedef half half2 __attribute__((ext_vector_type(2)));
 typedef short short2 __attribute__((ext_vector_type(2)));
 typedef float float2 __attribute__((ext_vector_type(2)));
 typedef __bf16 bfloat2 __attribute__((ext_vector_type(2)));
+typedef unsigned short ushort;
 
 void test_mfma_f32_16x16x32_f16(__global float4* out, half8 a, half8 b, float4 c, int X) {
 
@@ -198,3 +199,8 @@ void test_cvt_scalef32(global half2* out_v2f16, global float* out_f32, uint src,
   *out = __builtin_amdgcn_cvt_scalef32_sr_fp8_f16(*out, src0, 0, scale, index); // expected-error{{argument to '__builtin_amdgcn_cvt_scalef32_sr_fp8_f16' must be a constant integer}}
   *out = __builtin_amdgcn_cvt_scalef32_sr_fp8_f32(*out, src0, 0, scale, index); // expected-error{{argument to '__builtin_amdgcn_cvt_scalef32_sr_fp8_f32' must be a constant integer}}
 }
+
+void test_bitop3_args(global uint* out, uint a, uint b, uint c) {
+  *out = __builtin_amdgcn_bitop3_b32(a, b, c, a); // expected-error {{argument to '__builtin_amdgcn_bitop3_b32' must be a constant integer}}
+  *out = __builtin_amdgcn_bitop3_b16((ushort)a, (ushort)b, (ushort)c, a); // expected-error {{argument to '__builtin_amdgcn_bitop3_b16' must be a constant integer}}
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsAMDGPU.td b/llvm/include/llvm/IR/IntrinsicsAMDGPU.td
@@ -727,6 +727,11 @@ def int_amdgcn_prng_b32 : DefaultAttrsIntrinsic<
   [llvm_i32_ty], [llvm_i32_ty], [IntrNoMem]
 >, ClangBuiltin<"__builtin_amdgcn_prng_b32">;
 
+def int_amdgcn_bitop3 :
+  DefaultAttrsIntrinsic<[llvm_anyint_ty],
+                        [LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>, llvm_i8_ty],
+                        [IntrNoMem, IntrSpeculatable, ImmArg<ArgIndex<3>>]>;
+
 } // TargetPrefix = "amdgcn"
 
 // New-style image intrinsics
diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -4914,6 +4914,14 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
       OpdsMapping[2] = AMDGPU::getValueMapping(MaskBank, MaskSize);
       break;
     }
+    case Intrinsic::amdgcn_bitop3: {
+      unsigned Size = getSizeInBits(MI.getOperand(0).getReg(), MRI, *TRI);
+      OpdsMapping[0] = AMDGPU::getValueMapping(AMDGPU::VGPRRegBankID, Size);
+      OpdsMapping[2] = AMDGPU::getValueMapping(AMDGPU::VGPRRegBankID, Size);
+      OpdsMapping[3] = AMDGPU::getValueMapping(AMDGPU::VGPRRegBankID, Size);
+      OpdsMapping[4] = AMDGPU::getValueMapping(AMDGPU::VGPRRegBankID, Size);
+      break;
+    }
     case Intrinsic::amdgcn_s_quadmask:
     case Intrinsic::amdgcn_s_wqm: {
       Register MaskReg = MI.getOperand(2).getReg();
diff --git a/llvm/lib/Target/AMDGPU/VOP3Instructions.td b/llvm/lib/Target/AMDGPU/VOP3Instructions.td
@@ -1259,6 +1259,15 @@ let SubtargetPredicate = HasBitOp3Insts  in {
     defm V_BITOP3_B32 : VOP3Inst <"v_bitop3_b32",
                                   VOP3_BITOP3_Profile<VOPProfile <[i32, i32, i32, i32, i8]>, VOP3_REGULAR>>;
   }
+  def : GCNPat<
+    (i32 (int_amdgcn_bitop3 i32:$src0, i32:$src1, i32:$src2, i8:$bitop3)),
+    (i32 (V_BITOP3_B32_e64 VSrc_b32:$src0, VSrc_b32:$src1, VSrc_b32:$src2, timm:$bitop3))
+  >;
+
+  def : GCNPat<
+    (i16 (int_amdgcn_bitop3 i16:$src0, i16:$src1, i16:$src2, i8:$bitop3)),
+    (i16 (V_BITOP3_B16_e64 0, VSrc_b16:$src0, 0, VSrc_b16:$src1, 0, VSrc_b16:$src2, timm:$bitop3, 0))
+  >;
 } // End SubtargetPredicate = HasBitOp3Insts
 
 class DivFmasPat<ValueType vt, Instruction inst, Register CondReg> : GCNPat<
diff --git a/llvm/lib/TargetParser/TargetParser.cpp b/llvm/lib/TargetParser/TargetParser.cpp
@@ -473,6 +473,7 @@ void AMDGPU::fillAMDGPUFeatureMap(StringRef GPU, const Triple &T,
       Features["gws"] = true;
       break;
     case GK_GFX950:
+      Features["bitop3-insts"] = true;
       Features["fp6bf6-cvt-scale-insts"] = true;
       Features["fp4-cvt-scale-insts"] = true;
       Features["bf8-cvt-scale-insts"] = true;
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.bitop3.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.bitop3.ll
