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require "spec"
{% if flag?(:interpreted) && !flag?(:win32) %}
# TODO: figure out how to link against libstdc++ in interpreted code (#14398)
pending LLVM::ABI::X86_64
{% skip_file %}
{% end %}
require "llvm"
{% if LibLLVM::BUILT_TARGETS.includes?(:x86) %}
LLVM.init_x86
{% end %}
private def abi(win64 = false)
triple = win64 ? "x86_64-windows-msvc" : LLVM.default_target_triple.gsub(/^(.+?)-/, "x86_64-")
target = LLVM::Target.from_triple(triple)
machine = target.create_target_machine(triple)
machine.enable_global_isel = false
win64 ? LLVM::ABI::X86_Win64.new(machine) : LLVM::ABI::X86_64.new(machine)
end
private def test(msg, *, win64 = false, file = __FILE__, line = __LINE__, &block : LLVM::ABI, LLVM::Context ->)
it msg, file: file, line: line do
abi = abi(win64)
ctx = LLVM::Context.new
block.call(abi, ctx)
end
end
class LLVM::ABI
describe X86_64 do
{% if LibLLVM::BUILT_TARGETS.includes?(:x86) %}
describe "align" do
test "for integer" do |abi, ctx|
abi.align(ctx.int1).should be_a(::Int32)
abi.align(ctx.int1).should eq(1)
abi.align(ctx.int8).should eq(1)
abi.align(ctx.int16).should eq(2)
abi.align(ctx.int32).should eq(4)
abi.align(ctx.int64).should eq(8)
end
test "for pointer" do |abi, ctx|
abi.align(ctx.int8.pointer).should eq(8)
end
test "for float" do |abi, ctx|
abi.align(ctx.float).should eq(4)
end
test "for double" do |abi, ctx|
abi.align(ctx.double).should eq(8)
end
test "for struct" do |abi, ctx|
abi.align(ctx.struct([ctx.int32, ctx.int64])).should eq(8)
abi.align(ctx.struct([ctx.int8, ctx.int16])).should eq(2)
end
test "for packed struct" do |abi, ctx|
abi.align(ctx.struct([ctx.int32, ctx.int64], packed: true)).should eq(1)
end
test "for array" do |abi, ctx|
abi.align(ctx.int16.array(10)).should eq(2)
end
end
describe "size" do
test "for integer" do |abi, ctx|
abi.size(ctx.int1).should be_a(::Int32)
abi.size(ctx.int1).should eq(1)
abi.size(ctx.int8).should eq(1)
abi.size(ctx.int16).should eq(2)
abi.size(ctx.int32).should eq(4)
abi.size(ctx.int64).should eq(8)
end
test "for pointer" do |abi, ctx|
abi.size(ctx.int8.pointer).should eq(8)
end
test "for float" do |abi, ctx|
abi.size(ctx.float).should eq(4)
end
test "for double" do |abi, ctx|
abi.size(ctx.double).should eq(8)
end
test "for struct" do |abi, ctx|
abi.size(ctx.struct([ctx.int32, ctx.int64])).should eq(16)
abi.size(ctx.struct([ctx.int16, ctx.int8])).should eq(4)
abi.size(ctx.struct([ctx.int32, ctx.int8, ctx.int8])).should eq(8)
end
test "for packed struct" do |abi, ctx|
abi.size(ctx.struct([ctx.int32, ctx.int64], packed: true)).should eq(12)
end
test "for array" do |abi, ctx|
abi.size(ctx.int16.array(10)).should eq(20)
end
end
describe "abi_info" do
test "does with primitives" do |abi, ctx|
arg_types = [ctx.int32, ctx.int64]
return_type = ctx.int8
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(2)
info.arg_types[0].should eq(ArgType.direct(ctx.int32))
info.arg_types[1].should eq(ArgType.direct(ctx.int64))
info.return_type.should eq(ArgType.direct(ctx.int8))
end
test "does with structs less than 64 bits" do |abi, ctx|
str = ctx.struct([ctx.int8, ctx.int16])
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64])))
info.return_type.should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64])))
end
test "does with structs between 64 and 128 bits" do |abi, ctx|
str = ctx.struct([ctx.int64, ctx.int16])
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64, ctx.int64])))
info.return_type.should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64, ctx.int64])))
end
test "does with structs larger than 128 bits" do |abi, ctx|
str = ctx.struct([ctx.int64, ctx.int64, ctx.int8])
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.indirect(str, Attribute::ByVal))
info.return_type.should eq(ArgType.indirect(str, Attribute::StructRet))
end
end
{% end %}
end
describe X86_Win64 do
{% if LibLLVM::BUILT_TARGETS.includes?(:x86) %}
describe "abi_info" do
test "does with structs between 64 and 128 bits", win64: true do |abi, ctx|
str = ctx.struct([ctx.int64, ctx.int16])
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.indirect(str, Attribute::ByVal))
info.return_type.should eq(ArgType.indirect(str, Attribute::StructRet))
end
test "does with structs larger than 128 bits", win64: true do |abi, ctx|
str = ctx.struct([ctx.int64, ctx.int64, ctx.int8])
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.indirect(str, Attribute::ByVal))
info.return_type.should eq(ArgType.indirect(str, Attribute::StructRet))
end
test "does with packed struct containing unaligned fields (#9873)" do |abi, ctx|
str = ctx.struct([ctx.int8, ctx.int16], packed: true)
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.indirect(str, Attribute::ByVal))
info.return_type.should eq(ArgType.indirect(str, Attribute::StructRet))
end
test "does with packed struct not containing unaligned fields" do |abi, ctx|
str = ctx.struct([ctx.int16, ctx.int8], packed: true)
arg_types = [str]
return_type = str
info = abi.abi_info(arg_types, return_type, true, ctx)
info.arg_types.size.should eq(1)
info.arg_types[0].should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64])))
info.return_type.should eq(ArgType.direct(str, cast: ctx.struct([ctx.int64])))
end
end
{% end %}
end
end
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