[WebAssembly] non-pie dynamic-linking executable seems broken (LLVM 19 regression) #107387
Description
build the following test code as a non-pie dynamically-linked executable.
llvm 19 produces non-working binary.
llvm 18 worked fine.
you can find the full test code and compiler/linker options in https://github.com/yamt/garbage/tree/master/c/shlib_2
void f(void); void (*f_p)(void) = f; void _start(void) { f_p(); }spacetanuki% toywasm --dyld main Error: [trap] uninitialized element (8): call_indirect (null funcref) 0 current pc 0000fd frame[ 0] funcpc 0000e2 (main:_start) 2024-09-05 20:43:42 (1725536622.157386000): [10fb06600] instance_execute_func failed with -1 2024-09-05 20:43:42 (1725536622.157883000): [10fb06600] invoke failed with -1 spacetanuki% note that llvm 19's __wasm_apply_data_relocs is empty.
llvm 19.1.0-rc4
(module $main (type (;0;) (func)) (import "env" "f" (func $f (type 0))) (func $__wasm_apply_data_relocs (type 0)) (func $_start (type 0) global.get $GOT.data.internal.__memory_base i32.const 1024 i32.add i32.load call_indirect (type 0)) (table (;0;) 1 funcref) (memory (;0;) 2) (global $__stack_pointer (mut i32) (i32.const 66576)) (global $GOT.data.internal.__memory_base i32 (i32.const 0)) (global (;2;) i32 (i32.const 66576)) (global (;3;) i32 (i32.const 131072)) (export "memory" (memory 0)) (export "__stack_pointer" (global $__stack_pointer)) (export "__wasm_apply_data_relocs" (func $__wasm_apply_data_relocs)) (export "_start" (func $_start)) (export "__indirect_function_table" (table 0)) (export "__heap_base" (global 2)) (export "__heap_end" (global 3)) (data $.data (i32.const 1024) "\00\00\00\00")) llvm 18.1.2
(module $main (type (;0;) (func)) (import "env" "f" (func $f (type 0))) (import "GOT.func" "f" (global $f (mut i32))) (func $__wasm_apply_data_relocs (type 0) i32.const 1024 global.get $f i32.store) (func $_start (type 0) global.get $GOT.data.internal.__memory_base i32.const 1024 i32.add i32.load call_indirect (type 0)) (table (;0;) 1 funcref) (memory (;0;) 2) (global $__stack_pointer (mut i32) (i32.const 66576)) (global $GOT.data.internal.__memory_base i32 (i32.const 0)) (global (;3;) i32 (i32.const 66576)) (global (;4;) i32 (i32.const 131072)) (export "memory" (memory 0)) (export "__stack_pointer" (global $__stack_pointer)) (export "__wasm_apply_data_relocs" (func $__wasm_apply_data_relocs)) (export "_start" (func $_start)) (export "__indirect_function_table" (table 0)) (export "__heap_base" (global 3)) (export "__heap_end" (global 4)) (data $.data (i32.const 1024) "\00\00\00\00"))