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Don't generate DWARF sections when no functions were compiled. (#894)

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This commit is contained in:
Yury Delendik
2020-02-03 14:41:29 -06:00
committed by GitHub
parent ea4faa4a01
commit 4599234c6f
8 changed files with 138 additions and 62 deletions
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19
src/commands/wasm2obj.rs
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@@ -17,7 +17,8 @@ use wasmtime_debug::{emit_debugsections, read_debuginfo};
use wasmtime_environ::Lightbeam;
use wasmtime_environ::{
cache_init, entity::EntityRef, settings, settings::Configurable, wasm::DefinedMemoryIndex,
Compiler, Cranelift, ModuleEnvironment, ModuleVmctxInfo, Tunables, VMOffsets,
wasm::MemoryIndex, Compiler, Cranelift, ModuleEnvironment, ModuleMemoryOffset, ModuleVmctxInfo,
Tunables, VMOffsets,
};
use wasmtime_jit::native;
use wasmtime_obj::emit_module;
@@ -161,12 +162,22 @@ impl WasmToObjCommand {
}
.context("failed to compile module")?;
if compilation.is_empty() {
bail!("no functions were found/compiled");
}
let module_vmctx_info = {
let ofs = VMOffsets::new(target_config.pointer_bytes(), &module);
let memory_offset =
ofs.vmctx_vmmemory_definition_base(DefinedMemoryIndex::new(0)) as i64;
ModuleVmctxInfo {
memory_offset,
memory_offset: if ofs.num_imported_memories > 0 {
ModuleMemoryOffset::Imported(ofs.vmctx_vmmemory_import(MemoryIndex::new(0)))
} else if ofs.num_defined_memories > 0 {
ModuleMemoryOffset::Defined(
ofs.vmctx_vmmemory_definition_base(DefinedMemoryIndex::new(0)),
)
} else {
ModuleMemoryOffset::None
},
stack_slots,
}
};