5 files changed, 104 insertions, 0 deletions

diff --git a/test/typecheck/pass/implicits.sail b/test/typecheck/pass/implicits.sail
new file mode 100644
index 00000000..2923fab4
--- /dev/null
+++ b/test/typecheck/pass/implicits.sail
@@ -0,0 +1,45 @@
+default Order dec
+
+$include <prelude.sail>
+
+val EXTZ : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m), bits('n)) -> bits('m)
+
+function EXTZ(m, x) = sail_zero_extend(x, m)
+
+val EXTS : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m), bits('n)) -> bits('m)
+
+function EXTS(m, x) = sail_sign_extend(x, m)
+
+val zeros : forall 'n, 'n >= 0. implicit('n) -> bits('n)
+
+function zeros(n) = replicate_bits(0b0, n)
+
+val dzeros : forall 'n 'm, 'n >= 0 & 'm >= 0. (implicit('n), implicit('m)) -> (bits('n), bits('m))
+
+function dzeros(n, m) = (zeros(n), zeros(m))
+
+val dzeros2 : forall 'n 'm, 'n >= 0 & 'm >= 0. (implicit('n), implicit('m), unit) -> (bits('n), bits('m))
+
+function dzeros2(n, m, _) = (zeros(n), zeros(m))
+
+function main((): unit) -> unit = {
+  let a: bits(64) = EXTZ(0xFF);
+  let b: bits(64) = EXTS(0xFF);
+  let c: bits(64) = EXTS(64, 0xFF);
+  let d: bits(64) = zeros();
+  let e: bits(64) = zeros(64);
+  let (f, g): (bits(64), bits(32)) = dzeros();
+  let (h, i) = dzeros(16, 8);
+  let (j, k): (bits(4), bits(2)) = dzeros2();
+  print_bits("a = ", a);
+  print_bits("b = ", b);
+  print_bits("c = ", c);
+  print_bits("d = ", d);
+  print_bits("e = ", e);
+  print_bits("f = ", f);
+  print_bits("g = ", g);
+  print_bits("h = ", h);
+  print_bits("i = ", i);
+  print_bits("j = ", j);
+  print_bits("k = ", k)
+}
\ No newline at end of file
diff --git a/test/typecheck/pass/implicits/v1.expect b/test/typecheck/pass/implicits/v1.expect
new file mode 100644
index 00000000..f1711d54
--- /dev/null
+++ b/test/typecheck/pass/implicits/v1.expect
@@ -0,0 +1,6 @@
+Type error:
+[implicits/v1.sail]:9:51-63
+9 |val EXTS : forall 'n 'm, 0 <= 'n <= 'm. (bits('n), implicit('m)) -> bits('m)
+  |                                                   ^----------^
+  | Arguments are invalid, implicit arguments must come before all other arguments
+  | 
diff --git a/test/typecheck/pass/implicits/v1.sail b/test/typecheck/pass/implicits/v1.sail
new file mode 100644
index 00000000..661ff309
--- /dev/null
+++ b/test/typecheck/pass/implicits/v1.sail
@@ -0,0 +1,29 @@
+default Order dec
+
+$include <prelude.sail>
+
+val EXTZ : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m), bits('n)) -> bits('m)
+
+function EXTZ(m, x) = sail_zero_extend(x, m)
+
+val EXTS : forall 'n 'm, 0 <= 'n <= 'm. (bits('n), implicit('m)) -> bits('m)
+
+function EXTS(x, m) = sail_sign_extend(x, m)
+
+val zeros : forall 'n, 'n >= 0. implicit('n) -> bits('n)
+
+function zeros(n) = replicate_bits(0b0, n)
+
+function main((): unit) -> unit = {
+  let a: bits(64) = EXTZ(0xFF);
+  let b: bits(64) = EXTS(0xFF);
+  let c: bits(64) = EXTS(0xFF, 64);
+  let d: bits(64) = zeros();
+  let e: bits(64) = zeros(64);
+  print_bits("a = ", a);
+  print_bits("b = ", b);
+  print_bits("c = ", c);
+  print_bits("d = ", d);
+  print_bits("e = ", e);
+  ()
+}
\ No newline at end of file
diff --git a/test/typecheck/pass/implicits/v2.expect b/test/typecheck/pass/implicits/v2.expect
new file mode 100644
index 00000000..11ffeace
--- /dev/null
+++ b/test/typecheck/pass/implicits/v2.expect
@@ -0,0 +1,6 @@
+Type error:
+[implicits/v2.sail]:5:50-56
+5 |val EXTZ : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m - 1), bits('n)) -> bits('m)
+  |                                                  ^----^
+  | Implicit argument must contain a single type variable
+  | 
diff --git a/test/typecheck/pass/implicits/v2.sail b/test/typecheck/pass/implicits/v2.sail
new file mode 100644
index 00000000..4040aa0c
--- /dev/null
+++ b/test/typecheck/pass/implicits/v2.sail
@@ -0,0 +1,18 @@
+default Order dec
+
+$include <prelude.sail>
+
+val EXTZ : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m - 1), bits('n)) -> bits('m)
+
+function EXTZ(m, x) = sail_zero_extend(x, m)
+
+val EXTS : forall 'n 'm, 0 <= 'n <= 'm. (implicit('m), bits('n)) -> bits('m)
+
+function EXTS(m, x) = sail_sign_extend(x, m)
+
+function main((): unit) -> unit = {
+  let a: bits(64) = EXTZ(0xFF);
+  let b: bits(64) = EXTS(0xFF);
+  print_bits("a = ", a);
+  print_bits("b = ", b)
+}
\ No newline at end of file