Add pass argument sugar to commandline (#3882)

We have --pass-arg that allows sending an argument to a pass, like this:

wasm-opt --do-stuff --pass-arg=do-stuff@FUNCTION_NAME

With this PR that is equivalent to this:

wasm-opt --do-stuff=FUNCTION_NAME

That is,one can just give an argument to a pass on the commandline.

This fixes the Optional mode in command-line.h/cpp. That was not
actually used anywhere before this PR.

Also rename --extract-function's pass argument to match it. That is, the usage
used to be

wasm-opt --extract-function --pass-arg=extract@FUNCTION_NAME

Note how the pass name differed from the pass-arg name. This changes it to
match. This is a breaking change, but I doubt this is used enough to justify
any deprecation / backwards compatibility effort, and any usage is almost
certainly manual, and with PR writing it manually becomes easier as one
can do

wasm-opt --extract-function=FUNCTION_NAME

The existing test for that is kept (&renamed), and a new test added to test the
new notation.

This is a step towards unifying the symbol map functionality between
wasm-as and wasm-opt (later PRs will turn the symbol mapping pass into
a pass that receives an argument).

1 files changed, 0 insertions, 36 deletions

diff --git a/test/passes/extract-function_pass-arg=extract@foo.wast b/test/passes/extract-function_pass-arg=extract@foo.wast
deleted file mode 100644
index ab1d8b269..000000000
--- a/test/passes/extract-function_pass-arg=extract@foo.wast
+++ /dev/null
@@ -1,36 +0,0 @@
-(module
-  (func $foo
-    (call $bar)
-  )
-  (func $bar
-    (call $foo)
-  )
-  (func $other
-    (drop (i32.const 1))
-  )
-)
-(module
-  ;; Use another function in the table, but the table is not used in the
-  ;; extracted function
-  (table $t 10 funcref)
-  (elem $0 (table $t) (i32.const 0) func $other)
-  (func $foo
-  )
-  (func $other
-    (drop (i32.const 1))
-  )
-)
-(module
-  ;; Use another function in the table, and the table *is* used. As a result,
-  ;; the table and its elements will remain. The called function, $other, will
-  ;; remain as an import that is placed in the table.
-  (type $none (func))
-  (table $t 10 funcref)
-  (elem $0 (table $t) (i32.const 0) func $other)
-  (func $foo
-   (call_indirect (type $none) (i32.const 10))
-  )
-  (func $other
-    (drop (i32.const 1))
-  )
-)