Remove FunctionType (#2510)

Function signatures were previously redundantly stored on Function
objects as well as on FunctionType objects. These two signature
representations had to always be kept in sync, which was error-prone
and needlessly complex. This PR takes advantage of the new ability of
Type to represent multiple value types by consolidating function
signatures as a pair of Types (params and results) stored on the
Function object.

Since there are no longer module-global named function types,
significant changes had to be made to the printing and emitting of
function types, as well as their parsing and manipulation in various
passes.

The C and JS APIs and their tests also had to be updated to remove
named function types.

1 files changed, 5 insertions, 5 deletions

diff --git a/test/bulk-memory.wast.fromBinary b/test/bulk-memory.wast.fromBinary
index 0659c0184..f1c3bc0ef 100644
--- a/test/bulk-memory.wast.fromBinary
+++ b/test/bulk-memory.wast.fromBinary
@@ -1,25 +1,25 @@
 (module
- (type $0 (func))
+ (type $none_=>_none (func))
  (memory $0 1024 1024)
  (data (i32.const 0) "hello, world")
- (func $memory.init (; 0 ;) (type $0)
+ (func $memory.init (; 0 ;)
   (memory.init 0
    (i32.const 512)
    (i32.const 0)
    (i32.const 12)
   )
  )
- (func $data.drop (; 1 ;) (type $0)
+ (func $data.drop (; 1 ;)
   (data.drop 0)
  )
- (func $memory.copy (; 2 ;) (type $0)
+ (func $memory.copy (; 2 ;)
   (memory.copy
    (i32.const 512)
    (i32.const 0)
    (i32.const 12)
   )
  )
- (func $memory.fill (; 3 ;) (type $0)
+ (func $memory.fill (; 3 ;)
   (memory.fill
    (i32.const 0)
    (i32.const 42)