98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
# This test generates all variants of load/store instructions and verifies that
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# LLVM generates correct PTX for them.
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# RUN: python %s > %t.ll
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# RUN: llc < %t.ll -march=nvptx64 -mcpu=sm_30 | FileCheck -check-prefixes=CHECK,CHECK_P64 %t.ll
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# RUN: llc < %t.ll -march=nvptx -mcpu=sm_30 | FileCheck -check-prefixes=CHECK,CHECK_P32 %t.ll
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from itertools import product
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from string import Template
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llvm_type_to_ptx_type = {
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"i8": "u8",
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"i16": "u16",
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"i32": "u32",
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"i64": "u64",
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"half": "b16",
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"<2 x half>": "b32",
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"float": "f32",
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"double": "f64"
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}
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llvm_type_to_ptx_reg = {
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"i8": "r",
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"i16": "r",
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"i32": "r",
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"i64": "rd",
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"half": "h",
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"<2 x half>": "hh",
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"float": "f",
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"double": "fd"
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}
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addrspace_id = {
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"": 0,
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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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}
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def gen_load_tests():
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load_template = """
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define ${type} @ld${_volatile}${_space}.${ptx_type}(${type} addrspace(${asid})* %ptr) {
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; CHECK_P32: ld${_volatile}${_volatile_as}.${ptx_type} %${ptx_reg}{{[0-9]+}}, [%r{{[0-9]+}}]
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; CHECK_P64: ld${_volatile}${_volatile_as}.${ptx_type} %${ptx_reg}{{[0-9]+}}, [%rd{{[0-9]+}}]
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; CHECK: ret
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%p = ${generic_ptr}
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%a = load ${volatile} ${type}, ${type}* %p
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ret ${type} %a
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}
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"""
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for op_type, volatile, space in product(
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["i8", "i16", "i32", "i64", "half", "float", "double", "<2 x half>"],
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[True, False], # volatile
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["", ".shared", ".global", ".const", ".local", ".param"]):
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# Volatile is only supported for global, shared and generic.
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if volatile and not space in ["", ".global", ".shared"]:
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continue
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# Volatile is only supported for global, shared and generic.
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# All other volatile accesses are done in generic AS.
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if volatile and not space in ["", ".global", ".shared"]:
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volatile_as = ""
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else:
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volatile_as = space
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params = {
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"type": op_type,
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"volatile": "volatile" if volatile else "",
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"_volatile": ".volatile" if volatile else "",
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"_volatile_as": volatile_as,
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"_space": space,
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"ptx_reg": llvm_type_to_ptx_reg[op_type],
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"ptx_type": llvm_type_to_ptx_type[op_type],
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"asid": addrspace_id[space],
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}
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# LLVM does not accept "addrspacecast Type* addrspace(0) to Type*", so we
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# need to avoid it for generic pointer tests.
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if space:
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generic_ptr_template = ("addrspacecast ${type} addrspace(${asid})* %ptr "
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"to ${type}*")
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else:
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generic_ptr_template = "select i1 true, ${type}* %ptr, ${type}* %ptr"
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params["generic_ptr"] = Template(generic_ptr_template).substitute(params)
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print(Template(load_template).substitute(params))
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def main():
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gen_load_tests()
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main()
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