[WebAssembly] Minor cleanup to test inputs. NFC.

[sbc100]

Summary

Update load-undefined.test such that it doesn't really on
ret32 and ret64 being default visibility.

Split out from: https://reviews.llvm.org/D48394

test/wasm/Inputs/ret32.ll

 target triple = "wasm32-unknown-unknown"
 
-; Function Attrs: norecurse nounwind readnone
-define i32 @ret32(float %arg) #0 {
+define hidden i32 @ret32(float %arg) {
 entry:
     ret i32 0
-     ; ptrtoint (i32 (float)* @ret32 to i32)
 }

test/wasm/Inputs/ret64.ll

 target triple = "wasm32-unknown-unknown"
 
-define i64 @ret64(double %arg) local_unnamed_addr #0 {
+define hidden i64 @ret64(double %arg) {
 entry:
     ret i64 1
 }

test/wasm/load-undefined.test

 ; Verify that the -u / --undefined option is able to pull in symbols from
 ; an archive, and doesn't error when uses to pull in a symbol already loaded.
 ;
 ; RUN: llc -filetype=obj %S/Inputs/ret64.ll -o %t.o
 ; RUN: llc -filetype=obj %S/Inputs/ret32.ll -o %t2.o
 ; RUN: llc -filetype=obj %S/Inputs/start.ll -o %t.start.o
 ; RUN: llvm-ar rcs %t2.a %t2.o
-; RUN: wasm-ld %t.start.o %t2.a %t.o -o %t.wasm -u ret32 --undefined ret64
+; RUN: wasm-ld %t.start.o --no-gc-sections %t2.a %t.o -o %t.wasm -u ret32 --undefined ret64
 ; RUN: obj2yaml %t.wasm | FileCheck %s
+; RUN: wasm-ld %t.start.o --no-gc-sections %t2.a %t.o -o %t2.wasm
+; RUN: obj2yaml %t2.wasm | FileCheck %s -check-prefix=NO-LOAD
 
-; CHECK:        - Type:            EXPORT
-; CHECK-NEXT:     Exports:
-; CHECK-NEXT:       - Name:            memory
-; CHECK-NEXT:         Kind:            MEMORY
-; CHECK-NEXT:         Index:           0
-; CHECK-NEXT:       - Name:            __heap_base
-; CHECK-NEXT:         Kind:            GLOBAL
-; CHECK-NEXT:         Index:           1
-; CHECK-NEXT:       - Name:            __data_end
-; CHECK-NEXT:         Kind:            GLOBAL
-; CHECK-NEXT:         Index:           2
-; CHECK-NEXT:       - Name:            _start
-; CHECK-NEXT:         Kind:            FUNCTION
-; CHECK-NEXT:         Index:           1
-; CHECK-NEXT:       - Name:            ret32
-; CHECK-NEXT:         Kind:            FUNCTION
-; CHECK-NEXT:         Index:           2
-; CHECK-NEXT:       - Name:            ret64
-; CHECK-NEXT:         Kind:            FUNCTION
-; CHECK-NEXT:         Index:           3
-; CHECK-NEXT:   - Type:
+; CHECK:         Name:            name
+; CHECK-NEXT:    FunctionNames:   
+; CHECK-NEXT:      - Index:           0
+; CHECK-NEXT:        Name:            __wasm_call_ctors
+; CHECK-NEXT:      - Index:           1
+; CHECK-NEXT:        Name:            _start
+; CHECK-NEXT:      - Index:           2
+; CHECK-NEXT:        Name:            ret32
+; CHECK-NEXT:      - Index:           3
+; CHECK-NEXT:        Name:            ret64
+; CHECK-NEXT: ...
 
+; NO-LOAD:         Name:            name
+; NO-LOAD-NEXT:    FunctionNames:   
+; NO-LOAD-NEXT:      - Index:           0
+; NO-LOAD-NEXT:        Name:            __wasm_call_ctors
+; NO-LOAD-NEXT:      - Index:           1
+; NO-LOAD-NEXT:        Name:            _start
+; NO-LOAD-NEXT:      - Index:           2
+; NO-LOAD-NEXT:        Name:            ret64
+; NO-LOAD-NEXT: ...
 
 ; Verify that referencing a symbol that doesn't exist won't work
 ; RUN: not wasm-ld %t.start.o -o %t.wasm -u symboldoesnotexist 2>&1 | FileCheck -check-prefix=CHECK-UNDEFINED1 %s
 ; CHECK-UNDEFINED1: error: undefined symbol: symboldoesnotexist
 
 ; RUN: not wasm-ld %t.start.o -o %t.wasm --undefined symboldoesnotexist --allow-undefined 2>&1 | FileCheck -check-prefix=CHECK-UNDEFINED2 %s
 ; CHECK-UNDEFINED2: symbol forced with --undefined not found: symboldoesnotexist