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[MLIR][ROCDL] Add Scale Convert Packed FP4 <-> F32/BF16/F16 Support for GFX950
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‎mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td

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Original file line numberDiff line numberDiff line change
@@ -713,6 +713,10 @@ def ROCDL_V2I16Type : FixedVectorOfLengthAndType<[2], [I16]>,
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BuildableType<"::mlir::VectorType::get("
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"{2},$_builder.getI16Type())">;
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def ROCDL_V2F32Type : FixedVectorOfLengthAndType<[2], [F32]>,
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BuildableType<"::mlir::VectorType::get("
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"{2},$_builder.getF32Type())">;
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def ROCDL_V2F16Type : FixedVectorOfLengthAndType<[2], [F16]>,
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BuildableType<"::mlir::VectorType::get("
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"{2},$_builder.getF16Type())">;
@@ -1005,6 +1009,120 @@ def ROCDL_CvtScaleF32SrBf8F32Op :
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}];
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}
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//===---------------------------------------------------------------------===//
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// 4-bit float scale intrinsics
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//===---------------------------------------------------------------------===//
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def ROCDL_CvtScaleF32PkFp4F32Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.fp4.f32", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, F32:$src0, F32:$src1, F32: $scale, I32:$byteSel)> {
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let summary = "Convert f32 to packed fp4 and scale";
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let description = [{ Convert `src` based on $$byteSe to packed fp4, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src0 `,` $src1 `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32PkFp4F16Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.fp4.f16", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, ROCDL_V2F16Type:$src, F32: $scale, I32:$byteSel)> {
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let summary = "Convert f16 to packed fp4 and scale";
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let description = [{ Convert `src` based on $byteSel to packed fp4, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32PkFp4Bf16Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.fp4.bf16", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, ROCDL_V2BF16Type:$src, F32: $scale, I32:$byteSel)> {
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let summary = "Convert bf16 to packed fp4 and scale";
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let description = [{ Convert `src` based on $byteSel to packed fp4, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32SrPkFp4F32Op :
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ROCDL_IntrOp<"cvt.scalef32.sr.pk.fp4.f32", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, ROCDL_V2F32Type:$src, I32:$seed, F32: $scale, I32:$byteSel)> {
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let summary = "Scale and convert f32 to packed fp4 using stochastic rounding";
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let description = [{
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Scale `src` by the exponent in `scale` then convert to packed fp4 with stochastic rounding
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using seed data in `seed`. store into the `byteSel`th byte of `old`, preserving the others.
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}];
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let assemblyFormat = [{
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attr-dict $src `,` $seed `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32SrPkFp4F16Op :
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ROCDL_IntrOp<"cvt.scalef32.sr.pk.fp4.f16", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, ROCDL_V2F16Type:$src, I32:$seed, F32: $scale, I32:$byteSel)> {
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let summary = "Scale and convert f16 to packed fp4 using stochastic rounding";
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let description = [{
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Scale `src` by the exponent in `scale` then convert to packed fp4 with stochastic rounding
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using seed data in `seed`. store into the `byteSel`th byte of `old`, preserving the others.
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}];
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let assemblyFormat = [{
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attr-dict $src `,` $seed `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32SrPkFp4Bf16Op :
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ROCDL_IntrOp<"cvt.scalef32.sr.pk.fp4.bf16", [], [], [Pure], 1>,
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Arguments<(ins I32:$old, ROCDL_V2BF16Type:$src, I32:$seed, F32: $scale, I32:$byteSel)> {
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let summary = "Scale and convert bf16 to packed fp4 using stochastic rounding";
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let description = [{
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Scale `src` by the exponent in `scale` then convert to packed fp4 with stochastic rounding
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using seed data in `seed`. store into the `byteSel`th byte of `old`, preserving the others.
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}];
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let assemblyFormat = [{
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attr-dict $src `,` $seed `,` $scale `->` $old `[` $byteSel `]` `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32PkF32Fp4Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.f32.fp4", [], [], [Pure], 1>,
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Arguments<(ins I32:$src, F32:$scale, I32:$byteSel)> {
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let summary = "Convert fp4 to packed f32 and scale";
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let description = [{ Convert `src` based on $byteSel to packed f32, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src `[` $byteSel `]` `,` $scale `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32PkF16Fp4Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.f16.fp4", [], [], [Pure], 1>,
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Arguments<(ins I32:$src, F32:$scale, I32:$byteSel)> {
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let summary = "Convert fp4 to packed f16 and scale";
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let description = [{ Convert `src` based on $byteSel to packed f16, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src `[` $byteSel `]` `,` $scale `:` type($res)
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}];
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}
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def ROCDL_CvtScaleF32PkBf16Fp4Op :
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ROCDL_IntrOp<"cvt.scalef32.pk.bf16.fp4", [], [], [Pure], 1>,
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Arguments<(ins I32:$src, F32:$scale, I32:$byteSel)> {
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let summary = "Convert fp4 to packed bf16 and scale";
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let description = [{ Convert `src` based on $byteSel to packed bf16, then scale
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the packed values by the exponent in `scale`.
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}];
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let assemblyFormat = [{
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attr-dict $src `[` $byteSel `]` `,` $scale `:` type($res)
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}];
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}
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//===---------------------------------------------------------------------===//
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// 8-bit float intrinsics
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//===---------------------------------------------------------------------===//

‎mlir/test/Dialect/LLVMIR/rocdl.mlir

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -844,6 +844,25 @@ llvm.func @rocdl_v2f16_v2i16(%source: vector<2xf16>, %source2: vector<2xbf16>, %
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llvm.return %source_scaled : vector<2xi16>
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}
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llvm.func @rocdl_4bit_packed_floats(%old: i32, %source0: f32, %source1: f32, %source: vector<2xf32>, %source_half: vector<2xf16>, %source_bfloat: vector<2xbf16>, %stoch: i32) -> i32 {
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// CHECK-LABEL: @rocdl_4bit_packed_floats
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// CHECK: rocdl.cvt.scalef32.pk.fp4.f32
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// CHECK: rocdl.cvt.scalef32.pk.fp4.f16
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// CHECK: rocdl.cvt.scalef32.pk.fp4.bf16
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// CHECK: rocdl.cvt.scalef32.sr.pk.fp4.f32
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// CHECK: rocdl.cvt.scalef32.sr.pk.fp4.f16
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// CHECK: rocdl.cvt.scalef32.sr.pk.fp4.bf16
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%c0 = llvm.mlir.constant(0 : i32) : i32
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%scale = llvm.mlir.constant(1.0 : f32) : f32
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%pk1 = rocdl.cvt.scalef32.pk.fp4.f32 %source0, %source1, %scale -> %old[%c0] : i32
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%pk2 = rocdl.cvt.scalef32.pk.fp4.f16 %source_half, %scale -> %pk1[%c0] : i32
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%pk3 = rocdl.cvt.scalef32.pk.fp4.bf16 %source_bfloat, %scale -> %pk2[%c0] : i32
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%sr1 = rocdl.cvt.scalef32.sr.pk.fp4.f32 %source, %stoch, %scale -> %pk3[%c0] : i32
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%sr2 = rocdl.cvt.scalef32.sr.pk.fp4.f16 %source_half, %stoch, %scale -> %sr1[%c0] : i32
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%sr3 = rocdl.cvt.scalef32.sr.pk.fp4.bf16 %source_bfloat, %stoch, %scale -> %sr2[%c0] : i32
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llvm.return %sr3 : i32
864+
}
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847866
llvm.func @rocdl.s.waitcnt() {
848867
// CHECK-LABEL: rocdl.s.waitcnt
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// CHECK: rocdl.s.waitcnt 0

‎mlir/test/Target/LLVMIR/rocdl.mlir

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1145,6 +1145,25 @@ llvm.func @rocdl_16bit_packed_floats(%sourceA: f32, %sourceB: f32) -> vector<2xf
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llvm.return %source : vector<2xf16>
11461146
}
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llvm.func @rocdl_4bit_packed_floats(%old: i32, %source0: f32, %source1: f32, %source: vector<2xf32>, %source_half: vector<2xf16>, %source_bfloat: vector<2xbf16>, %stoch: i32) -> i32 {
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// CHECK-LABEL: @rocdl_4bit_packed_floats
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.pk.fp4.f32(i32 %0, float %1, float %2, float 1.000000e+00, i32 0)
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.pk.fp4.f16(i32 %8, <2 x half> %4, float 1.000000e+00, i32 0)
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.pk.fp4.bf16(i32 %9, <2 x bfloat> %5, float 1.000000e+00, i32 0)
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.sr.pk.fp4.f32(i32 %10, <2 x float> %3, i32 %6, float 1.000000e+00, i32 0)
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.sr.pk.fp4.f16(i32 %11, <2 x half> %4, i32 %6, float 1.000000e+00, i32 0)
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// CHECK: call i32 @llvm.amdgcn.cvt.scalef32.sr.pk.fp4.bf16(i32 %12, <2 x bfloat> %5, i32 %6, float 1.000000e+00, i32 0)
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%c0 = llvm.mlir.constant(0 : i32) : i32
1157+
%scale = llvm.mlir.constant(1.0 : f32) : f32
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%pk1 = rocdl.cvt.scalef32.pk.fp4.f32 %source0, %source1, %scale -> %old[%c0] : i32
1159+
%pk2 = rocdl.cvt.scalef32.pk.fp4.f16 %source_half, %scale -> %pk1[%c0] : i32
1160+
%pk3 = rocdl.cvt.scalef32.pk.fp4.bf16 %source_bfloat, %scale -> %pk2[%c0] : i32
1161+
%sr1 = rocdl.cvt.scalef32.sr.pk.fp4.f32 %source, %stoch, %scale -> %pk3[%c0] : i32
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%sr2 = rocdl.cvt.scalef32.sr.pk.fp4.f16 %source_half, %stoch, %scale -> %sr1[%c0] : i32
1163+
%sr3 = rocdl.cvt.scalef32.sr.pk.fp4.bf16 %source_bfloat, %stoch, %scale -> %sr2[%c0] : i32
1164+
llvm.return %sr3 : i32
1165+
}
1166+
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llvm.func @rocdl_atomic_attrs(%ptr: !llvm.ptr<1>, %data: f32) {
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// CHECK-LABEL: @rocdl_atomic_attrs
11501169
// CHECK: atomicrmw

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