[WebAssembly] Fix .functype directives in tests (#108748)

For defined functions, it appears `.functype` directive should be after
the function label. Otherwise binary generation does not seem to work
correctly. Also this fixes a case that the `.functype` directive's name
is incorrect.

Author: aheejin

llvm/test/MC/WebAssembly/eh-assembly-legacy.s

@@ -4,10 +4,11 @@
 
   .tagtype  __cpp_exception i32
   .tagtype  __c_longjmp i32
-  .functype  eh_legacy_test () -> ()
   .functype  foo () -> ()
 
 eh_legacy_test:
+  .functype  eh_legacy_test () -> ()
+
   # try-catch with catch, catch_all, throw, and rethrow
   try
     i32.const 3
@@ -55,7 +56,7 @@ eh_legacy_test:
   end_function
 
 # CHECK-LABEL: eh_legacy_test:
-# CHECK-NEXT:    try
+# CHECK:         try
 # CHECK-NEXT:    i32.const       3
 # CHECK-NEXT:    throw           __cpp_exception
 # CHECK-NEXT:    catch           __cpp_exception

llvm/test/MC/WebAssembly/func-end-errors.s

@@ -4,14 +4,14 @@
 # assembly. This causes the parser to properly wrap up function info when there
 # is no other instructions present.
 
-.functype test0 () -> ()
 test0:
+  .functype test0 () -> ()
 
-.functype test1 () -> ()
-# CHECK: [[@LINE+1]]:1: error: Unmatched block construct(s) at function end: function
 test1:
+# CHECK: [[@LINE+1]]:{{.*}}: error: Unmatched block construct(s) at function end: function
+  .functype test1 () -> ()
   end_function
 
-.functype test2 () -> ()
 test2:
-# CHECK: [[@LINE+1]]:1: error: Unmatched block construct(s) at function end: function
+  .functype test2 () -> ()
+# CHECK: [[@LINE+1]]:{{.*}}: error: Unmatched block construct(s) at function end: function

llvm/test/MC/WebAssembly/funcref-from-table.s

@@ -6,7 +6,7 @@
 .globl obtain_funcref_from_table_index
 
 obtain_funcref_from_table_index:
-  .functype obtain_funcref_from_table_index(i32) -> (funcref)
+  .functype obtain_funcref_from_table_index (i32) -> (funcref)
   local.get 0
   table.get __indirect_function_table
   end_function

llvm/test/MC/WebAssembly/type-checker-br.s

@@ -16,7 +16,7 @@ br_block:
   end_function
 
 br_func:
-  .functype br_block () -> ()
+  .functype br_func () -> ()
   block i32
     br 1
     i32.const 1