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Refactor CompiledModule to separate compile and linking stages (#1831)

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* Refactor how relocs are stored and handled

* refactor CompiledModule::instantiate and link_module

* Refactor DWARF creation: split generation and serialization

* Separate DWARF data transform from instantiation

* rm LinkContext
This commit is contained in:
Yury Delendik
2020-06-09 15:09:48 -05:00
committed by GitHub
parent ac87ed12bd
commit 4ebbcb82a9
9 changed files with 400 additions and 340 deletions
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44
crates/jit/src/trampoline.rs
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@@ -10,49 +10,7 @@ pub use cranelift_codegen::Context;
pub use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
pub mod binemit {
pub use crate::compiler::RelocSink as TrampolineRelocSink;
pub use cranelift_codegen::binemit::NullTrapSink;
pub use cranelift_codegen::binemit::{CodeOffset, NullStackmapSink, TrapSink};
use cranelift_codegen::{binemit, ir};
/// We don't expect trampoline compilation to produce any relocations, so
/// this `RelocSink` just asserts that it doesn't recieve any.
pub struct TrampolineRelocSink {}
impl binemit::RelocSink for TrampolineRelocSink {
fn reloc_block(
&mut self,
_offset: binemit::CodeOffset,
_reloc: binemit::Reloc,
_block_offset: binemit::CodeOffset,
) {
panic!("trampoline compilation should not produce block relocs");
}
fn reloc_external(
&mut self,
_offset: binemit::CodeOffset,
_srcloc: ir::SourceLoc,
_reloc: binemit::Reloc,
_name: &ir::ExternalName,
_addend: binemit::Addend,
) {
panic!("trampoline compilation should not produce external symbol relocs");
}
fn reloc_constant(
&mut self,
_code_offset: binemit::CodeOffset,
_reloc: binemit::Reloc,
_constant_offset: ir::ConstantOffset,
) {
panic!("trampoline compilation should not produce constant relocs");
}
fn reloc_jt(
&mut self,
_offset: binemit::CodeOffset,
_reloc: binemit::Reloc,
_jt: ir::JumpTable,
) {
panic!("trampoline compilation should not produce jump table relocs");
}
}
}