bjoernager/rust
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Tweak wasm_base target spec to indicate linker is not GNU and update linker inferring logic for wasm-ld.

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This commit is contained in:
Luqman Aden 2021-06-01 17:13:10 -07:00
parent 625d5a693e
commit f667aca127
3 changed files with 8 additions and 3 deletions
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2
compiler/rustc_codegen_ssa/src/back/link.rs
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@ -1005,6 +1005,8 @@ fn linker_and_flavor(sess: &Session) -> (PathBuf, LinkerFlavor) {
|| stem.ends_with("-clang")
{
LinkerFlavor::Gcc
} else if stem == "wasm-ld" || stem.ends_with("-wasm-ld") {
LinkerFlavor::Lld(LldFlavor::Wasm)
} else if stem == "ld" || stem == "ld.lld" || stem.ends_with("-ld") {
LinkerFlavor::Ld
} else if stem == "link" || stem == "lld-link" {

8
compiler/rustc_codegen_ssa/src/back/linker.rs
View file

@ -472,7 +472,9 @@ impl<'a> Linker for GccLinker<'a> {
// eliminate the metadata. If we're building an executable, however,
// --gc-sections drops the size of hello world from 1.8MB to 597K, a 67%
// reduction.
} else if self.sess.target.linker_is_gnu && !keep_metadata {
} else if (self.sess.target.linker_is_gnu || self.sess.target.is_like_wasm)
&& !keep_metadata
{
self.linker_arg("--gc-sections");
}
}
@ -480,13 +482,13 @@ impl<'a> Linker for GccLinker<'a> {
fn no_gc_sections(&mut self) {
if self.sess.target.is_like_osx {
self.linker_arg("-no_dead_strip");
} else if self.sess.target.linker_is_gnu {
} else if self.sess.target.linker_is_gnu || self.sess.target.is_like_wasm {
self.linker_arg("--no-gc-sections");
}
}
fn optimize(&mut self) {
if !self.sess.target.linker_is_gnu {
if !self.sess.target.linker_is_gnu && !self.sess.target.is_like_wasm {
return;
}