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# This test generates all variants of wmma intrinsics and verifies that LLVM
# generates correct instructions for them.
# RUN: python %s > %t.ll
# RUN: llc < %t.ll -march=nvptx64 -mcpu=sm_70 -mattr=+ptx61 | FileCheck %t.ll
from itertools import product
from string import Template
def make_wmma_slice_ty(abcd, itype):
elt_ty = "<2 x half>" if itype == "f16" else "float"
num_elts = 4 if abcd in "cd" and itype == "f16" else 8;
return [elt_ty] * num_elts
def make_wmma_ld_ret_ty(abc, itype):
return "{%s}" % ", ".join(make_wmma_slice_ty(abc, itype))
# returns address space
def get_aspace(space):
space_map = {
".global" : 1,
".shared" : 3,
".const" : 4,
".local" : 5,
".param" : 101,
"" : 0,
".generic": 0
}
return space_map[space];
def get_pspace(space):
return "p%di8" % get_aspace(space);
# Convenient test patterns.
check_f16_8 = "{{%s}}" % ", *".join(["%hh[0-9]+"] * 8)
check_f16_4 = "{{%s}}" % ", *".join(["%hh[0-9]+"] * 4)
check_f32_8 = "{{%s}}" % ", *".join(["%f[0-9]+"] * 8)
known_geoms = ["m16n16k16", "m8n32k16", "m32n8k16"]
def gen_wmma_load_tests():
load_template = """
declare ${ret_ty} @${intrinsic}(i8 ${as}* %src ${extra_args});
; CHECK-LABEL: .func {{.*}}test_${function}(
define ${ret_ty} @test_${function}(i8 ${as}* %src ${extra_args}) {
; CHECK: ${instruction}
; CHECK: {${check_result}}
; CHECK: [%rd{{[0-9]+}}]${stride_pattern}
%v0 = call ${ret_ty} @${intrinsic}(i8 ${as}* %src ${extra_args});
ret ${ret_ty} %v0;
}
; CHECK-LABEL: .func{{.*}}test_${function}_o(
define ${ret_ty} @test_${function}_o(i8 ${as}* %src ${extra_args}) {
; CHECK: ${instruction}
; CHECK: {${check_result}}
; CHECK: [%rd{{[0-9]+}}+128]${stride_pattern}
%src1 = getelementptr i8, i8 ${as}* %src, i32 128;
%v0 = call ${ret_ty} @${intrinsic}(i8 ${as}* %src1 ${extra_args});
ret ${ret_ty} %v0;
}
"""
intrinsic_template = "llvm.nvvm.wmma.${geom}.load.${abc}.${layout}${stride}.${itype}.${pspace}"
instruction_template = "wmma.load.${abc}.sync.${layout}.${geom}${space}.${itype}"
for geom, abc, layout, space, stride, itype in product(
known_geoms,
"abc",
["row","col"],
["",".shared",".global"],
["", ".stride"],
["f16", "f32"]):
params = {
"abc" : abc,
"layout" : layout,
"space" : space,
"stride" : stride,
"itype" : itype,
"pspace" : get_pspace(space),
"as" : "addrspace(%d)" % get_aspace(space),
"geom" : geom,
}
if itype == "f32" and abc != "c":
continue
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(abc, itype)
if abc == "c" :
test_params["check_result"] = check_f16_4 if itype == "f16" else check_f32_8
else:
test_params["check_result"] = check_f16_8
if stride:
test_params["extra_args"] = ", i32 %stride";
test_params["stride_pattern"] = ", %r{{[0-9]+}}"
else:
test_params["extra_args"] = ""
test_params["stride_pattern"] = ""
print(Template(load_template).substitute(test_params))
def make_wmma_slice_args(itype, abcd, prefix="v"):
return ", ".join(["%s %%%s%d" % (t, prefix, i) for i,t
in enumerate(make_wmma_slice_ty(abcd, itype))])
def gen_wmma_store_tests():
store_template = """
declare void @${intrinsic}(i8 ${as}* %src, ${args}${extra_args});
; CHECK-LABEL: .func {{.*}}test_${function}(
define void @test_${function}(i8 ${as}* %src, ${args}${extra_args}) {
; CHECK: ${instruction} {{.*}}[%rd{{[0-9+]}}
; CHECK: {${check_args}}
; CHECK: ${stride_pattern}
call void @${intrinsic}(i8 ${as}* %src, ${args} ${extra_args});
ret void
}
; CHECK-LABEL: .func{{.*}}test_${function}_o(
define void @test_${function}_o(i8 ${as}* %src, ${args}${extra_args}) {
; CHECK: ${instruction} {{.*}}[%rd{{[0-9+]}}+128]
; CHECK: ${check_args}
; CHECK: ${stride_pattern}
%src1 = getelementptr i8, i8 ${as}* %src, i32 128;
call void @${intrinsic}(i8 ${as}* %src1, ${args}${extra_args});
ret void
}
"""
intrinsic_template = "llvm.nvvm.wmma.${geom}.store.${abc}.${layout}${stride}.${itype}.${pspace}"
instruction_template = "wmma.store.${abc}.sync.${layout}.${geom}${space}.${itype}"
for geom, abc, layout, space, stride, itype in product(
known_geoms,
"d",
["row","col"],
["",".shared",".global"],
["", ".stride"],
["f16", "f32"]):
params = {
"abc" : abc,
"layout" : layout,
"space" : space,
"stride" : stride,
"itype" : itype,
"pspace" : get_pspace(space),
"as" : "addrspace(%d)" % get_aspace(space),
"geom" : geom,
}
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(abc, itype)
test_params["check_args"] = check_f16_4 if itype == "f16" else check_f32_8
if stride:
test_params["extra_args"] = ", i32 %stride";
test_params["stride_pattern"] = ", %r{{[0-9]+}};"
else:
test_params["extra_args"] = ""
test_params["stride_pattern"] = ";"
test_params["args"] = make_wmma_slice_args(itype, "d");
print(Template(store_template).substitute(test_params))
def gen_wmma_mma_tests():
mma_template = """
declare ${ret_ty} @${intrinsic}(
${args});
; CHECK-LABEL: .func {{.*}}test_${function}(
define ${ret_ty} @test_${function}(
${args}) {
; CHECK: ${instruction}
; CHECK-NEXT: ${check_d}
; CHECK-NEXT: ${check_ab}
; CHECK-NEXT: ${check_ab}
; CHECK-NEXT: ${check_c}
%r = call ${ret_ty} @${intrinsic}(
${args});
ret ${ret_ty} %r;
}
"""
intrinsic_template = "llvm.nvvm.wmma.${geom}.mma.${alayout}.${blayout}.${dtype}.${ctype}${satf}"
instruction_template = "wmma.mma.sync.${alayout}.${blayout}.${geom}.${dtype}.${ctype}${satf}"
for geom, alayout, blayout, ctype, dtype, satf in product(
known_geoms,
["row","col"],
["row","col"],
["f16", "f32"],
["f16", "f32"],
[".satfinite", ""]):
params = {
"alayout" : alayout,
"blayout" : blayout,
"ctype" : ctype,
"dtype" : dtype,
"satf" : satf,
"geom" : geom,
}
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("d", dtype)
test_params["check_ab"] = check_f16_8
test_params["check_c"] = check_f16_4 if ctype == "f16" else check_f32_8
test_params["check_d"] = check_f16_4 if dtype == "f16" else check_f32_8
args = ",\n ".join(make_wmma_slice_args(t, abcd, prefix=abcd)
for abcd, t in (("a", "f16"),
("b", "f16"),
("c", ctype)))
test_params["args"] = args
print(Template(mma_template).substitute(test_params))
def main():
gen_wmma_load_tests()
gen_wmma_store_tests()
gen_wmma_mma_tests()
main()
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