https://bugs.llvm.org/show_bug.cgi?id=39557
Bug ID: 39557
Summary: AsmParser cannot recognize function types without
definitions
Product: libraries
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: WebAssembly
Assignee: unassignedb...@nondot.org
Reporter: ahee...@gmail.com
CC: llvm-bugs@lists.llvm.org
Created attachment 21082
--> https://bugs.llvm.org/attachment.cgi?id=21082&action=edit
Test case .ll file
When there is a function call to a function that does not have a definition, if
we generate .s file using `llc` and generate .o file from it using `llvm-mc`,
the function symbol is recognized as not a function but a data.
Commands that reproduce the bug:
```
llc -filetype=asm -asm-verbose=false test.ll -o test.s
llvm-mc -triple=wasm32-unknown-unknown -filetype=obj test.s -o test_from_s.o
obj2yaml test_from_s.o > test_from_s.yaml
llc -filetype=obj test.ll -o test.o
obj2yaml test.o > test.yaml
```
test.yaml and test_from_s.yaml are supposed to be the same, but they are not.
In test_from_s.yaml, foo, which is defined, is listed as a function symbol, but
bar, which is not defined, is listed as data.
```
SymbolTable:
- Index: 0
Kind: FUNCTION
Name: foo
Flags: [ BINDING_LOCAL ]
Function: 0
- Index: 1
Kind: DATA
Name: bar
Flags: [ UNDEFINED ]
```
And consequentially, it has no function import entry in the 'Import' section,
and no type signature entry in 'Type' section as well.
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