forked from OSchip/llvm-project
532 lines
18 KiB
Python
532 lines
18 KiB
Python
# This test generates all variants of wmma intrinsics and verifies that LLVM
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# generates correct instructions for them.
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# Check all variants of instructions supported by PTX60 on SM70
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# RUN: python %s --ptx=60 --gpu-arch=70 > %t-ptx60-sm_70.ll
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# RUN: FileCheck %t-ptx60-sm_70.ll < %t-ptx60-sm_70.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX60,SM70
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# RUN: FileCheck %t-ptx60-sm_70.ll < %t-ptx60-sm_70.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX60U,SM70U
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# RUN: llc < %t-ptx60-sm_70.ll -march=nvptx64 -mcpu=sm_70 -mattr=+ptx60 \
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# RUN: | FileCheck %t-ptx60-sm_70.ll
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# Check all variants of instructions supported by PTX61 on SM70
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# RUN: python %s --ptx=61 --gpu-arch=70 > %t-ptx61-sm_70.ll
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# RUN: FileCheck %t-ptx61-sm_70.ll < %t-ptx61-sm_70.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX60,PTX61,SM70
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# RUN: FileCheck %t-ptx61-sm_70.ll < %t-ptx61-sm_70.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX61U,SM70U
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# RUN: llc < %t-ptx61-sm_70.ll -march=nvptx64 -mcpu=sm_70 -mattr=+ptx61 \
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# RUN: | FileCheck %t-ptx61-sm_70.ll
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# Check all variants of instructions supported by PTX63 on SM72
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# RUN: python %s --ptx=63 --gpu-arch=72 > %t-ptx63-sm_72.ll
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# RUN: FileCheck %t-ptx63-sm_72.ll < %t-ptx63-sm_72.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX60,PTX61,PTX63,SM70,SM72
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# RUN: FileCheck %t-ptx63-sm_72.ll < %t-ptx63-sm_72.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX63U,SM72U
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# RUN: llc < %t-ptx63-sm_72.ll -march=nvptx64 -mcpu=sm_72 -mattr=+ptx63 \
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# RUN: | FileCheck %t-ptx63-sm_72.ll
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# Check all variants of instructions supported by PTX63 on SM75
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# RUN: python %s --ptx=63 --gpu-arch=75 > %t-ptx63-sm_75.ll
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# RUN: FileCheck %t-ptx63-sm_75.ll < %t-ptx63-sm_75.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX60,PTX61,PTX63,SM70,SM72,SM75
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# RUN: FileCheck %t-ptx63-sm_75.ll < %t-ptx63-sm_75.ll \
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# RUN: --check-prefixes=INTRINSICS,PTX63U,SM75U
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# RUN: llc < %t-ptx63-sm_75.ll -march=nvptx64 -mcpu=sm_75 -mattr=+ptx63 \
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# RUN: | FileCheck %t-ptx63-sm_75.ll
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from __future__ import print_function
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import argparse
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from itertools import product
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from string import Template
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class MMAType:
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def __init__(self, ptx_type):
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self.ptx_type = ptx_type
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self.llvm_type = {
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"f16" : "<2 x half>",
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"f32" : "float",
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"s32" : "i32",
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"s8" : "i32",
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"u8" : "i32",
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"s4" : "i32",
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"u4" : "i32",
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"b1" : "i32",
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}[ptx_type];
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self.ptx_reg_pattern = {
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"f16" : "%hh[0-9]+",
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"f32" : "%f[0-9]+",
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}.get(ptx_type, "%r[0-9]+")
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def __repr__(self):
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return "%s/%s" % (self.ptx_type, self.llvm_type)
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class MMAFrag:
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def __init__(self, geom, frag, ptx_elt_type):
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self.geom = geom
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self.frag = frag
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self.mma_type = MMAType(ptx_elt_type);
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self.nregs = {
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"a:f16" : 8,
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"b:f16" : 8,
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"c:f16" : 4,
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"d:f16" : 4,
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"c:f32" : 8,
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"d:f32" : 8,
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}.get("%s:%s" % (frag, ptx_elt_type), {
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# u8/s8 -> s32 @ m16n16k16/m8n32k16/m32n8k16
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"m16n16k16:a:u8" : 2,
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"m16n16k16:a:s8" : 2,
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"m16n16k16:b:u8" : 2,
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"m16n16k16:b:s8" : 2,
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"m16n16k16:c:s32" : 8,
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"m16n16k16:d:s32" : 8,
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"m8n32k16:a:u8" : 1,
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"m8n32k16:a:s8" : 1,
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"m8n32k16:b:u8" : 4,
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"m8n32k16:b:s8" : 4,
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"m8n32k16:c:s32" : 8,
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"m8n32k16:d:s32" : 8,
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"m32n8k16:a:u8" : 4,
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"m32n8k16:a:s8" : 4,
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"m32n8k16:b:u8" : 1,
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"m32n8k16:b:s8" : 1,
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"m32n8k16:c:s32" : 8,
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"m32n8k16:d:s32" : 8,
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# u4/s4/b1 -> s32 @ m8n8k32 (u4/s4), m8n8k128(b1)
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"m8n8k128:a:b1" : 1,
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"m8n8k32:a:u4" : 1,
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"m8n8k32:a:s4" : 1,
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"m8n8k128:b:b1" : 1,
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"m8n8k32:b:u4" : 1,
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"m8n8k32:b:s4" : 1,
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"m8n8k128:c:s32" : 2,
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"m8n8k128:d:s32" : 2,
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"m8n8k32:c:s32" : 2,
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"m8n8k32:d:s32" : 2,
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}.get("%s:%s:%s" % (geom, frag, ptx_elt_type), None));
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assert(self.nregs);
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def __repr__(self):
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return "%s:%s:%s%s" % (self.geom, self.frag, self.mma_type,
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"" if self.nregs == 1 else ("*%d" % self.nregs))
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class MMAOp:
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def __init__(self, a, b, c, d):
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self.a = a
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self.b = b
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self.c = c
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self.d = d
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def __repr__(self):
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return ("{A:%s, B:%s, C:%s, D:%s}" % (self.a, self.b, self.c, self.d ))
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def make_mma_ops(geoms, types_a, types_b, types_c, types_d):
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ops = []
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for geom, type_a, type_c in product( geoms, types_a, types_c):
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for type_b, type_d in product(types_b if types_b else [type_a],
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types_d if types_d else [type_c]):
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ops.append(MMAOp(MMAFrag(geom, "a", type_a),
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MMAFrag(geom, "b", type_b),
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MMAFrag(geom, "c", type_c),
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MMAFrag(geom, "d", type_d)))
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return ops
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def make_ldst_ops(geoms, frags, types):
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return [MMAFrag(geom, frag, ptx_type) for (geom, frag, ptx_type)
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in product(geoms, frags, types)]
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def get_mma_ops():
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return (make_mma_ops(["m16n16k16", "m32n8k16", "m8n32k16"],
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["f16"], [], ["f16", "f32"], ["f16", "f32"]) +
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make_mma_ops(["m16n16k16", "m32n8k16", "m8n32k16"],
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["s8", "u8"], [], ["s32"], []) +
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make_mma_ops(["m8n8k32"],
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["s4", "u4"], [], ["s32"], []) +
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make_mma_ops(["m8n8k128"],
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["b1"], [], ["s32"], []))
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def get_ldst_ops(kind):
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ldst_ops = (make_ldst_ops(["m16n16k16", "m32n8k16", "m8n32k16"],
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["a", "b"], ["f16", "u8", "s8"]) +
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make_ldst_ops(["m16n16k16", "m32n8k16", "m8n32k16"],
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["c", "d"], ["f16", "f32", "s32"]) +
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make_ldst_ops(["m8n8k32"], ["a", "b"], ["s4","u4"]) +
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make_ldst_ops(["m8n8k128"], ["a", "b"], ["b1"]) +
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make_ldst_ops(["m8n8k32", "m8n8k128"], ["c", "d"], ["s32"]))
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return [ x for x in ldst_ops if (x.frag == "d") == (kind == "store")]
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def is_geom_supported(geom):
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# geometries for FP and ints.
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if geom in ["m8n32k16", "m32n8k16"]:
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return ptx_version >= 61
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# geometries for sub-ints.
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if geom in ["m8n8k32", "m8n8k128"]:
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return ptx_version >= 63 and gpu_arch >= 75
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if geom == "m16n16k16":
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return ptx_version >= 60
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assert(False) # Unexpected geometry.
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def is_type_supported(ptx_type):
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if ptx_type in ["s8", "u8", "s32"]:
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return ptx_version >= 63 and gpu_arch >= 72
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if ptx_type in ["s4", "u4", "b1"]:
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return ptx_version >= 63 and gpu_arch >= 75
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return ptx_version >= 60 and gpu_arch >= 70
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def is_mma_variant_supported(op, layout_a, layout_b, satf):
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if not (is_type_supported(op.a.mma_type.ptx_type)
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and is_geom_supported(op.a.geom)):
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return False
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# sub-integer require row/col layout, and no satf.
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if op.a.mma_type.ptx_type in ["s4", "u4", "b1"]:
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if op.a.mma_type.ptx_type == "b1" and satf:
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return False
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return layout_a == "row" and layout_b == "col"
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return True
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def is_ldst_variant_supported(frag, layout):
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if not (is_type_supported(frag.mma_type.ptx_type)
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and is_geom_supported(frag.geom)):
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return False
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if frag.mma_type.ptx_type in ["s4", "u4", "b1"]:
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# sub-integer require sm_75 and ptx63, row/col layout for a/b.
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return ((frag.frag == "a" and layout == "row")
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or (frag.frag == "b" and layout == "col")
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or frag.frag in ["c", "d"])
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return True
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def make_wmma_slice_ty(frag):
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return [frag.mma_type.llvm_type] * frag.nregs
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def make_wmma_ld_ret_ty(frag):
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results = make_wmma_slice_ty(frag)
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if len(results) == 1:
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return "%s" % results[0]
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return "{%s}" % ", ".join(results)
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# returns address space
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def get_aspace(space):
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space_map = {
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".global" : 1,
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".shared" : 3,
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".const" : 4,
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".local" : 5,
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".param" : 101,
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"" : 0,
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".generic": 0
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}
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return space_map[space];
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def get_pspace(space):
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return "p%di8" % get_aspace(space);
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def check_pattern(frag):
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return "{{%s}}" % ", *".join([frag.mma_type.ptx_reg_pattern] * frag.nregs)
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known_geoms = ["m16n16k16", "m8n32k16", "m32n8k16"]
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def gen_wmma_load_tests():
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load_template = """
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declare ${ret_ty} @${intrinsic}(i8 ${as}* %src ${extra_args});
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; CHECK-LABEL: .func {{.*}}test_${function}(
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define ${ret_ty} @test_${function}(i8 ${as}* %src ${extra_args}) {
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; CHECK: ${instruction}
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; CHECK: {${check_result}}
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; CHECK: [%rd{{[0-9]+}}]${stride_pattern}
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%v0 = call ${ret_ty} @${intrinsic}(i8 ${as}* %src ${extra_args});
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ret ${ret_ty} %v0;
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}
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; CHECK-LABEL: .func{{.*}}test_${function}_o(
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define ${ret_ty} @test_${function}_o(i8 ${as}* %src ${extra_args}) {
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; CHECK: ${instruction}
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; CHECK: {${check_result}}
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; CHECK: [%rd{{[0-9]+}}+128]${stride_pattern}
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%src1 = getelementptr i8, i8 ${as}* %src, i32 128;
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%v0 = call ${ret_ty} @${intrinsic}(i8 ${as}* %src1 ${extra_args});
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ret ${ret_ty} %v0;
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}
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"""
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intrinsic_template = "llvm.nvvm.wmma.${geom}.load.${abc}.${layout}${stride}.${itype}.${pspace}"
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instruction_template = "wmma.load.${abc}.sync${aligned}.${layout}.${geom}${space}.${itype}"
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generated_items = []
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for frag, layout, space, stride in product(
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get_ldst_ops("load"),
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["row","col"],
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["",".shared",".global"],
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["", ".stride"],
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):
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if not is_ldst_variant_supported(frag, layout):
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continue
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params = {
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"abc" : frag.frag,
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"aligned" : ".aligned" if ptx_version >= 63 else "",
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"layout" : layout,
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"space" : space,
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"stride" : stride,
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"itype" : frag.mma_type.ptx_type,
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"pspace" : get_pspace(space),
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"as" : "addrspace(%d)" % get_aspace(space),
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"geom" : frag.geom,
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}
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test_params = params
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test_params["intrinsic"] = Template(intrinsic_template).substitute(params)
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test_params["function"] = test_params["intrinsic"].replace(".","_")
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test_params["instruction"] = Template(instruction_template).substitute(params)
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test_params["ret_ty"] = make_wmma_ld_ret_ty(frag)
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test_params["check_result"] = check_pattern(frag)
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if stride:
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test_params["extra_args"] = ", i32 %stride";
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test_params["stride_pattern"] = ", %r{{[0-9]+}}"
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else:
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test_params["extra_args"] = ""
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test_params["stride_pattern"] = ""
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print(Template(load_template).substitute(test_params))
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generated_items.append((test_params["intrinsic"],
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test_params["instruction"]))
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return generated_items
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def make_wmma_slice_args(frag):
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return ", ".join(["%s %%%s%d" % (t, frag.frag, i) for i,t
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in enumerate(make_wmma_slice_ty(frag))])
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def gen_wmma_store_tests():
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store_template = """
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declare void @${intrinsic}(i8 ${as}* %src, ${args}${extra_args});
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; CHECK-LABEL: .func {{.*}}test_${function}(
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define void @test_${function}(i8 ${as}* %src, ${args}${extra_args}) {
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; CHECK: ${instruction} {{.*}}[%rd{{[0-9+]}}
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; CHECK: {${check_args}}
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; CHECK: ${stride_pattern}
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call void @${intrinsic}(i8 ${as}* %src, ${args} ${extra_args});
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ret void
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}
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; CHECK-LABEL: .func{{.*}}test_${function}_o(
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define void @test_${function}_o(i8 ${as}* %src, ${args}${extra_args}) {
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; CHECK: ${instruction} {{.*}}[%rd{{[0-9+]}}+128]
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; CHECK: ${check_args}
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; CHECK: ${stride_pattern}
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%src1 = getelementptr i8, i8 ${as}* %src, i32 128;
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call void @${intrinsic}(i8 ${as}* %src1, ${args}${extra_args});
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ret void
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}
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"""
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intrinsic_template = "llvm.nvvm.wmma.${geom}.store.${abc}.${layout}${stride}.${itype}.${pspace}"
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instruction_template = "wmma.store.${abc}.sync${aligned}.${layout}.${geom}${space}.${itype}"
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generated_items = []
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for frag, layout, space, stride in product(
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get_ldst_ops("store"),
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["row","col"],
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["",".shared",".global"],
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["", ".stride"]):
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if not is_ldst_variant_supported(frag, layout):
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continue
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params = {
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"abc" : frag.frag,
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"aligned" : ".aligned" if ptx_version >= 63 else "",
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"layout" : layout,
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"space" : space,
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"stride" : stride,
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"itype" : frag.mma_type.ptx_type,
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"pspace" : get_pspace(space),
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"as" : "addrspace(%d)" % get_aspace(space),
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"geom" : frag.geom,
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}
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test_params = params
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test_params["intrinsic"] = Template(intrinsic_template).substitute(params)
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test_params["function"] = test_params["intrinsic"].replace(".","_")
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test_params["instruction"] = Template(instruction_template).substitute(params)
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test_params["ret_ty"] = make_wmma_ld_ret_ty(frag)
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test_params["check_args"] = check_pattern(frag)
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if stride:
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test_params["extra_args"] = ", i32 %stride";
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test_params["stride_pattern"] = ", %r{{[0-9]+}};"
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else:
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test_params["extra_args"] = ""
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test_params["stride_pattern"] = ";"
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test_params["args"] = make_wmma_slice_args(frag);
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print(Template(store_template).substitute(test_params))
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generated_items.append((test_params["intrinsic"],
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test_params["instruction"]))
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return generated_items
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def mma_signature(op):
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if op.a.mma_type.ptx_type in ["s8", "u8", "s4", "u4", "b1"]:
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# int and sub-int ops are identified by input type.
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return op.a.mma_type.ptx_type
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else:
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# the rest are FP ops identified by accumulator & result type.
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return "%s.%s" % (op.d.mma_type.ptx_type, op.c.mma_type.ptx_type)
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def mma_ptx_signature(op):
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if op.a.mma_type.ptx_type in ["s8", "u8", "s4", "u4", "b1"]:
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# int and sub-int instructions encode all four types as D.A.B.C
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return ".".join(x.mma_type.ptx_type for x in (op.d, op.a, op.b, op.c))
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else:
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# the rest are FP instructions use D.C
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return "%s.%s" % (op.d.mma_type.ptx_type, op.c.mma_type.ptx_type)
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def gen_wmma_mma_tests():
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mma_template = """
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declare ${ret_ty} @${intrinsic}(
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${args});
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; CHECK-LABEL: .func {{.*}}test_${function}(
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define ${ret_ty} @test_${function}(
|
|
${args}) {
|
|
; CHECK: ${instruction}
|
|
; CHECK-NEXT: ${check_d}
|
|
; CHECK-NEXT: ${check_a}
|
|
; CHECK-NEXT: ${check_b}
|
|
; CHECK-NEXT: ${check_c}
|
|
%r = call ${ret_ty} @${intrinsic}(
|
|
${args});
|
|
ret ${ret_ty} %r;
|
|
}
|
|
"""
|
|
intrinsic_template = "llvm.nvvm.wmma.${geom}.mma.${alayout}.${blayout}.${intrinsic_signature}${satf}"
|
|
instruction_template = "wmma.mma${mma_variant}.sync${aligned}.${alayout}.${blayout}.${geom}.${ptx_signature}${satf}"
|
|
|
|
generated_items=[]
|
|
|
|
for op, alayout, blayout, satf in product(
|
|
get_mma_ops(),
|
|
["row","col"],
|
|
["row","col"],
|
|
[".satfinite", ""]):
|
|
|
|
if not is_mma_variant_supported(op, alayout, blayout, satf):
|
|
continue
|
|
|
|
params = {
|
|
"aligned" : ".aligned" if ptx_version >= 63 else "",
|
|
"alayout" : alayout,
|
|
"blayout" : blayout,
|
|
"intrinsic_signature" : mma_signature(op),
|
|
"ptx_signature" : mma_ptx_signature(op),
|
|
"satf" : satf,
|
|
"geom" : op.a.geom,
|
|
"mma_variant" : ".xor.popc" if op.a.mma_type.ptx_type == "b1" else "",
|
|
}
|
|
|
|
test_params = params
|
|
test_params["intrinsic"] = Template(intrinsic_template).substitute(params)
|
|
test_params["function"] = test_params["intrinsic"].replace(".", "_")
|
|
test_params["instruction"] = Template(instruction_template).substitute(params)
|
|
test_params["ret_ty"] = make_wmma_ld_ret_ty(op.d)
|
|
test_params["check_a"] = check_pattern(op.a)
|
|
test_params["check_b"] = check_pattern(op.b)
|
|
test_params["check_c"] = check_pattern(op.c)
|
|
test_params["check_d"] = check_pattern(op.d)
|
|
args = ",\n ".join(make_wmma_slice_args(frag)
|
|
for frag in (op.a, op.b, op.c))
|
|
test_params["args"] = args
|
|
print(Template(mma_template).substitute(test_params))
|
|
generated_items.append((test_params["intrinsic"],
|
|
test_params["instruction"]))
|
|
|
|
return generated_items
|
|
|
|
# Append complete list of intrinsics and instructions we've generated tests for.
|
|
# Generate set of checks to verify that that we did generate sensible set of
|
|
# tests for the given combination of PTX and SM variants.
|
|
#
|
|
# PTX<N>: verifies that we did generate tests for correct classes of intrinsics.
|
|
# PTX<N>U: verifies that we did not generate intrinsics unsupported by
|
|
# the PTX version.
|
|
# SM<N>: verifies that we did generate correct classes of instructions for the SM.
|
|
# SM<N>U: verifies that we did not generate instructions unsupported by the SM
|
|
#
|
|
# Note that SM/PTX constraints overlap, but DAG checks do not allow overlapping
|
|
# matches. We implicitly rely that we generate multiple variants of most of the
|
|
# instructions and usually have enough input data to find more than one match of
|
|
# the same kind, if necessary. When it's not possible (e.g. there's only one
|
|
# m8n8k128.mma.row.col.b1), we may need to match PTX instruction instead.
|
|
def gen_check_unsupported_ops(items):
|
|
print("; Complete list of intrinsics supported by PTX%d on sm_%d"
|
|
% (ptx_version, gpu_arch))
|
|
print("; INTRINSICS: {{^; INTRINSICS_LIST_BEGIN}}")
|
|
print("""
|
|
; PTX60-DAG: m16n16k16.load.{{[ab].*}}.f16.p
|
|
; PTX60-DAG: m16n16k16.{{load|store}}.{{[cd].*\.(f16|f32)}}.p
|
|
; PTX60U-NOT: m32n8k16
|
|
; PTX60U-NOT: m8n32k16
|
|
; PTX60U-NOT: .{{s32|s[48]|u[48]|b1}}
|
|
|
|
; All features of PTX60, plus m32n8k16/m8n32k16 geometries.
|
|
; PTX61-DAG: m32n8k16.load.{{[ab].*}}.f16.p
|
|
; PTX61-DAG: m32n8k16.{{load|store}}.{{[cd].*\.(f16|f32)}}.p
|
|
; PTX61-DAG: m8n32k16.load.{{[ab].*}}.f16.p
|
|
; PTX61-DAG: m8n32k16.{{load|store}}.{{[cd].*\.(f16|f32)}}.p
|
|
; PTX61U-NOT: .{{s32|s[48]|u[48]|b1}}
|
|
|
|
; SM70U-NOT: .{{s32|s[48]|u[48]|b1}}
|
|
|
|
; PTX63 supports all features of PTX60+PTX61, plus support for integers.
|
|
; Alas we can"t just use PTX<N> checks for that as available instructions
|
|
; depend on SM integers need sm72+ and subinteger ops need sm75, so we
|
|
; transition to SM<N> checks
|
|
; SM72-DAG: m16n16k16.load.{{[ab].*}}.s8.p
|
|
; SM72-DAG: m8n32k16.load.{{[ab].*}}.s8.p
|
|
; SM72-DAG: m32n8k16.load.{{[ab].*}}.s8.p
|
|
; SM72-DAG: m16n16k16.load.{{[ab].*}}.u8.p
|
|
; SM72-DAG: m8n32k16.load.{{[ab].*}}.u8.p
|
|
; SM72-DAG: m32n8k16.load.{{[ab].*}}.u8.p
|
|
; SM72-DAG: m32n8k16.{{load|store}}.{{[cd].*\.s32}}.p
|
|
; SM72U-NOT: .{{s4|u4|b1}}
|
|
|
|
; SM75-DAG: m8n8k128.load.{{[ab].*}}.b1.p
|
|
; SM75-DAG: m8n8k32.load.{{[ab].*}}.s4.p
|
|
; SM75-DAG: m8n8k32.load.{{[ab].*}}.u4.p
|
|
; SM75-DAG: m8n8k128.{{load|store}}.{{[cd].*\.s32}}.p
|
|
; SM75-DAG: m8n8k32.{{load|store}}.{{[cd].*\.s32}}.p
|
|
""")
|
|
|
|
print("; INTRINSICS_LIST_BEGIN")
|
|
for intrinsic, instruction in sorted(items):
|
|
print("; ", intrinsic, " -> ", instruction,"")
|
|
print("; INTRINSICS_LIST_END")
|
|
print("; INTRINSICS: ; INTRINSICS_LIST_END")
|
|
|
|
def gen_tests():
|
|
items = gen_wmma_load_tests()
|
|
items += gen_wmma_store_tests()
|
|
items += gen_wmma_mma_tests()
|
|
gen_check_unsupported_ops(items)
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument("--ptx", type=int, default=60)
|
|
parser.add_argument("--gpu-arch", type=int, default=70)
|
|
args = parser.parse_args()
|
|
ptx_version = args.ptx
|
|
gpu_arch = args.gpu_arch
|
|
|
|
gen_tests()
|