blob: 20c6f306d8aae629cf3f443c046986f29d0cf59f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// SPDX-License-Identifier: Apache-2.0
package chiselTests
import chisel3._
import chisel3.stage.ChiselStage
trait VecToTargetSpecUtils extends Utils {
this: ChiselFunSpec =>
class Foo extends RawModule {
val vec = IO(Input(Vec(4, Bool())))
// Index a Vec with a Scala literal.
val scalaLit = 0
val vecSubaccessScalaLit = vec(scalaLit)
// Index a Vec with a Chisel literal.
val chiselLit = 0.U
val vecSubaccessChiselLit = vec(chiselLit)
// Index a Vec with a node.
val node = IO(Input(UInt(2.W)))
val vecSubaccessNode = vec(node)
// Put an otherwise un-targetable Vec subaccess into a temp.
val vecSubaccessTmp = WireInit(vecSubaccessNode)
}
val expectedError = "You cannot target Vec subaccess:"
def conversionSucceeds(data: InstanceId) = {
describe(".toTarget") {
it("should convert successfully") {
data.toTarget
}
}
describe(".toNamed") {
it("should convert successfully") {
data.toNamed
}
}
}
def conversionFails(data: InstanceId) = {
describe(".toTarget") {
it("should fail to convert with a useful error message") {
(the[ChiselException] thrownBy extractCause[ChiselException] {
data.toTarget
}).getMessage should include(expectedError)
}
}
describe(".toNamed") {
it("should fail to convert with a useful error message") {
(the[ChiselException] thrownBy extractCause[ChiselException] {
data.toNamed
}).getMessage should include(expectedError)
}
}
}
}
class VecToTargetSpec extends ChiselFunSpec with VecToTargetSpecUtils {
describe("Vec subaccess") {
var foo: Foo = null
ChiselStage.elaborate { foo = new Foo; foo }
describe("with a Scala literal") {
(it should behave).like(conversionSucceeds(foo.vecSubaccessScalaLit))
}
describe("with a Chisel literal") {
(it should behave).like(conversionFails(foo.vecSubaccessChiselLit))
}
describe("with a Node") {
(it should behave).like(conversionFails(foo.vecSubaccessNode))
}
describe("with an un-targetable construct that is assigned to a temporary") {
(it should behave).like(conversionSucceeds(foo.vecSubaccessTmp))
}
}
}
|
