AMDGPU: Add v_mfma_i32_16x16x64_i8 for gfx950 (#116728)

Author: arsenm

clang/include/clang/Basic/BuiltinsAMDGPU.def

@@ -440,6 +440,7 @@ TARGET_BUILTIN(__builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4, "V16fV8ZiV8ZiV16
 TARGET_BUILTIN(__builtin_amdgcn_mfma_f32_16x16x32_f16, "V4fV8hV8hV4fIiIiIi", "nc", "gfx950-insts")
 TARGET_BUILTIN(__builtin_amdgcn_mfma_f32_32x32x16_f16, "V16fV8hV8hV16fIiIiIi", "nc", "gfx950-insts")
 TARGET_BUILTIN(__builtin_amdgcn_mfma_f32_32x32x16_bf16, "V16fV8yV8yV16fIiIiIi", "nc", "gfx950-insts")
+TARGET_BUILTIN(__builtin_amdgcn_mfma_i32_16x16x64_i8, "V4iV4iV4iV4iIiIiIi", "nc", "gfx950-insts")
 
 //===----------------------------------------------------------------------===//
 // GFX12+ only builtins.

clang/test/CodeGenOpenCL/builtins-amdgcn-mfma.cl

@@ -446,4 +446,10 @@ void test_mfma_scale_f32_32x32x64_f8f6f4(global v16f* out, v8i a, v8i b, v16f c,
   *out = __builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4(a, b, c, 3, 1, 2, scale_a, 3, scale_b);
 }
 
+// CHECK-GFX950-LABEL: @test_mfma_i32_16x16x64_i8(
+// CHECK-GFX950: tail call <4 x i32> @llvm.amdgcn.mfma.i32.16x16x64.i8(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c, i32 1, i32 2, i32 3)
+v4i test_mfma_i32_16x16x64_i8(v4i a, v4i b, v4i c) {
+  return __builtin_amdgcn_mfma_i32_16x16x64_i8(a, b, c, 1, 2, 3);
+}
+
 #endif

clang/test/SemaOpenCL/builtins-amdgcn-error-gfx950-param.cl

@@ -5,6 +5,7 @@ typedef float float4 __attribute__((ext_vector_type(4)));
 typedef float float16 __attribute__((ext_vector_type(16)));
 typedef half half8 __attribute__((ext_vector_type(8)));
 typedef __bf16 bfloat8 __attribute__((ext_vector_type(8)));
+typedef int int4 __attribute__((ext_vector_type(4)));
 typedef int int8 __attribute__((ext_vector_type(8)));
 
 
@@ -41,3 +42,9 @@ void test_mfma_scale_f32_32x32x64_f8f6f4(__global float16* out, int8 a, int8 b,
   *out = __builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4(a, b, c, 0, 0, X, Y, 2, Y); // expected-error{{argument to '__builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4' must be a constant integer}}
   *out = __builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4(a, b, c, 0, 0, 0, Y, X, Y); // expected-error{{argument to '__builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4' must be a constant integer}}
 }
+
+void test_mfma_i32_16x16x64_i8(__global int4* out, int4 a, int4 b, int4 c, int X) {
+  *out = __builtin_amdgcn_mfma_i32_16x16x64_i8(a, b, c, X, 0, 0); // expected-error{{argument to '__builtin_amdgcn_mfma_i32_16x16x64_i8' must be a constant integer}}
+  *out = __builtin_amdgcn_mfma_i32_16x16x64_i8(a, b, c, 0, X, 0);  // expected-error{{argument to '__builtin_amdgcn_mfma_i32_16x16x64_i8' must be a constant integer}}
+  *out = __builtin_amdgcn_mfma_i32_16x16x64_i8(a, b, c, 0, 0, X);  // expected-error{{argument to '__builtin_amdgcn_mfma_i32_16x16x64_i8' must be a constant integer}}
+}

clang/test/SemaOpenCL/builtins-amdgcn-error-gfx950.cl

@@ -31,6 +31,7 @@ void test(__global float4* out0, half8 a0, half8 b0, float4 c0,
   *out0 = __builtin_amdgcn_mfma_f32_16x16x32_f16(a0, b0, c0, 0, 0, 0); // expected-error{{'__builtin_amdgcn_mfma_f32_16x16x32_f16' needs target feature gfx950-insts}}
   *out1 = __builtin_amdgcn_mfma_f32_32x32x16_f16(a1, b1, c1, 0, 0, 0); // expected-error{{'__builtin_amdgcn_mfma_f32_32x32x16_f16' needs target feature gfx950-insts}}
   *out2 = __builtin_amdgcn_mfma_f32_32x32x16_bf16(a2, b2, c2, 0, 0, 0); // expected-error{{'__builtin_amdgcn_mfma_f32_32x32x16_bf16' needs target feature gfx950-insts}}
+  *out3 = __builtin_amdgcn_mfma_i32_16x16x64_i8(a3, b3, c3, 0, 0, 0); // expected-error{{'__builtin_amdgcn_mfma_i32_16x16x64_i8' needs target feature gfx950-insts}}
   *out14 = __builtin_amdgcn_mfma_scale_f32_16x16x128_f8f6f4(a14, b14, c14, 0, 0, 0, d14, 0, e14); // expected-error{{'__builtin_amdgcn_mfma_scale_f32_16x16x128_f8f6f4' needs target feature gfx950-insts}}
   *out15 = __builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4(a15, b15, c15, 0, 0, 0, d15, 0, e15); // expected-error{{'__builtin_amdgcn_mfma_scale_f32_32x32x64_f8f6f4' needs target feature gfx950-insts}}
 }

llvm/include/llvm/IR/IntrinsicsAMDGPU.td

@@ -3146,6 +3146,7 @@ def int_amdgcn_cvt_sr_fp8_f32 : ClangBuiltin<"__builtin_amdgcn_cvt_sr_fp8_f32">,
 defset list<Intrinsic> AMDGPUMFMAIntrinsics950 = {
 def int_amdgcn_mfma_f32_16x16x32_f16 : AMDGPUMfmaIntrinsic<llvm_v4f32_ty, llvm_v8f16_ty>;
 def int_amdgcn_mfma_f32_32x32x16_f16 : AMDGPUMfmaIntrinsic<llvm_v16f32_ty, llvm_v8f16_ty>;
+def int_amdgcn_mfma_i32_16x16x64_i8 : AMDGPUMfmaIntrinsic<llvm_v4i32_ty, llvm_v4i32_ty>;
 
 def int_amdgcn_mfma_f32_32x32x16_bf16 : AMDGPUMfmaIntrinsic<llvm_v16f32_ty, llvm_v8bf16_ty>;
 def int_amdgcn_mfma_scale_f32_16x16x128_f8f6f4 : AMDGPUMfmaScaleIntrinsic<llvm_v4f32_ty>;

llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp

@@ -4749,7 +4749,8 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
     case Intrinsic::amdgcn_mfma_f32_32x32x16_fp8_bf8:
     case Intrinsic::amdgcn_mfma_f32_32x32x16_fp8_fp8:
     case Intrinsic::amdgcn_mfma_f32_16x16x32_f16:
-    case Intrinsic::amdgcn_mfma_f32_32x32x16_f16: {
+    case Intrinsic::amdgcn_mfma_f32_32x32x16_f16:
+    case Intrinsic::amdgcn_mfma_i32_16x16x64_i8: {
       // Default for MAI intrinsics.
       // srcC can also be an immediate which can be folded later.
       // FIXME: Should we eventually add an alternative mapping with AGPR src

llvm/lib/Target/AMDGPU/VOP3PInstructions.td

@@ -721,6 +721,11 @@ def VOPProfileMAI_F32_V4I32_V4I32_X512_VCD : VOPProfileMAI<VOP_V16F32_V4I32_V4I3
 }
 
 
+// For i32_16x16x64_i8
+def VOPProfileMAI_I32_V4I32_X128     : VOPProfileMAI<VOP_V4I32_V4I32_V4I32_V4I32,    AISrc_128_f32,  ADst_128, AVSrc_128>;
+def VOPProfileMAI_I32_V4I32_X128_VCD : VOPProfileMAI<VOP_V4I32_V4I32_V4I32_V4I32,    VISrc_128_f32,  VDst_128, AVSrc_128>;
+
+
 class MFMATable <bit is_mac, string Name> {
   bit IsMac = is_mac;
   string FMAOp = Name;
@@ -943,6 +948,7 @@ defm V_MFMA_F32_32X32X4BF16 : MAIInst<"v_mfma_f32_32x32x4bf16", "F32_V2I16_X16",
 let SubtargetPredicate = HasGFX950Insts, is_gfx940_xdl = 1 in {
 defm V_MFMA_F32_16X16X32_F16   : MAIInst<"v_mfma_f32_16x16x32f16",    "F32_V8F16_X32", int_amdgcn_mfma_f32_16x16x32_f16>;
 defm V_MFMA_F32_32X32X16_F16   : MAIInst<"v_mfma_f32_32x32x16f16",    "F32_V8F16_X16", int_amdgcn_mfma_f32_32x32x16_f16>;
+defm V_MFMA_I32_16X16X64_I8    : MAIInst<"v_mfma_i32_16x16x64i8",     "I32_V4I32_X128", int_amdgcn_mfma_i32_16x16x64_i8>;
 defm V_MFMA_F32_32X32X16_BF16  : MAIInst<"v_mfma_f32_32x32x16bf16",   "F32_V8BF16_X16", int_amdgcn_mfma_f32_32x32x16_bf16>;
 
 defm V_MFMA_F32_16X16X128_F8F6F4 : MAIInst_SrcFormats_mc<"v_mfma_f32_16x16x128f8f6f4",
@@ -2067,6 +2073,7 @@ defm V_MFMA_F64_4X4X4F64        : VOP3P_Real_MFMA_gfx90a <0x6f>;
 
 defm V_MFMA_F32_16X16X32_F16     : VOP3P_Real_MFMA_gfx950 <0x54, "v_mfma_f32_16x16x32_f16">;
 defm V_MFMA_F32_32X32X16_F16     : VOP3P_Real_MFMA_gfx950 <0x55, "v_mfma_f32_32x32x16_f16">;
+defm V_MFMA_I32_16X16X64_I8      : VOP3P_Real_MFMA_gfx950 <0x36, "v_mfma_i32_16x16x64_i8">;
 defm V_MFMA_F32_32X32X16_BF16    : VOP3P_Real_MFMA_gfx950 <0x37, "v_mfma_f32_32x32x16_bf16">;
 
 defm V_MFMA_LD_SCALE_B32 : VOP3P_Real_vi <0x2c>;

llvm/test/Analysis/UniformityAnalysis/AMDGPU/intrinsics.ll

@@ -305,6 +305,14 @@ define amdgpu_kernel void @mfma_f32_scale_32x32x64_f8f6f4(<8 x i32> %arg0, <8 x
   ret void
 }
 
+declare <4 x i32> @llvm.amdgcn.mfma.i32.16x16x64.i8(<4 x i32>, <4 x i32>, <4 x i32>, i32 immarg, i32 immarg, i32 immarg)
+
+; CHECK: DIVERGENT: %result = call <4 x i32> @llvm.amdgcn.mfma.i32.16x16x64.i8(<4 x i32> %arg0, <4 x i32> %arg1, <4 x i32> %arg2, i32 immarg 0, i32 immarg 0, i32 immarg 0)
+define amdgpu_kernel void @mfma_i32_16x16x64_i8(<4 x i32> %arg0, <4 x i32> %arg1, <4 x i32> %arg2, ptr addrspace(1) %out) {
+  %result = call <4 x i32> @llvm.amdgcn.mfma.i32.16x16x64.i8(<4 x i32> %arg0, <4 x i32> %arg1, <4 x i32> %arg2, i32 immarg 0, i32 immarg 0, i32 immarg 0)
+  store <4 x i32> %result, ptr addrspace(1) %out
+  ret void
+}
 
 declare i32 @llvm.amdgcn.ds.swizzle(i32, i32) #1
 declare i32 @llvm.amdgcn.permlane16.i32(i32, i32, i32, i32, i1, i1) #1