Add support for using operators on arrays (and pointers to arrays).

Allows more expressive yet type checked representation of array
algorithms.

examples/sysir/arrays1.janet

@@ -0,0 +1,18 @@
+(def ir-asm
+  @{:instructions
+   '(
+     # Types
+     (type-prim Double f64)
+     (type-array BigVec Double 100)
+
+     # Declarations
+     (bind 0 BigVec)
+     (bind 1 BigVec)
+     (bind 2 BigVec)
+     (add 2 0 1)
+     (return 2))
+   :parameter-count 2
+   :link-name "add_vector"})
+
+(def as (sysir/asm ir-asm))
+(print (sysir/to-c as))

examples/sysir/arrays2.janet

@@ -0,0 +1,20 @@
+
+(def ir-asm
+  @{:instructions
+   '(
+     # Types
+     (type-prim Double f64)
+     (type-array BigVec Double 100)
+     (type-pointer BigVecP BigVec)
+
+     # Declarations
+     (bind 0 BigVecP)
+     (bind 1 BigVecP)
+     (bind 2 BigVecP)
+     (add 2 0 1)
+     (return 2))
+   :parameter-count 2
+   :link-name "add_vectorp"})
+
+(def as (sysir/asm ir-asm))
+(print (sysir/to-c as))