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Enable stack probing on x86_64 

Cranelift now supports inline stack probes on x86_64
This commit is contained in:
bjorn3 2022-09-25 15:54:15 +00:00
parent 0035f09c5a
commit f90bc3009a
1 changed files with 9 additions and 1 deletions
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10
src/lib.rs
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@ -251,7 +251,6 @@ fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Box<dyn isa::Tar
let mut flags_builder = settings::builder();
flags_builder.enable("is_pic").unwrap();
flags_builder.set("enable_probestack", "false").unwrap(); // __cranelift_probestack is not provided
let enable_verifier = if backend_config.enable_verifier { "true" } else { "false" };
flags_builder.set("enable_verifier", enable_verifier).unwrap();
flags_builder.set("regalloc_checker", enable_verifier).unwrap();
@ -279,6 +278,15 @@ fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Box<dyn isa::Tar
}
}
if target_triple.architecture == target_lexicon::Architecture::X86_64 {
// Windows depends on stack probes to grow the committed part of the stack
flags_builder.enable("enable_probestack").unwrap();
flags_builder.set("probestack_strategy", "inline").unwrap();
} else {
// __cranelift_probestack is not provided and inline stack probes are only supported on x86_64
flags_builder.set("enable_probestack", "false").unwrap();
}
let flags = settings::Flags::new(flags_builder);
let isa_builder = match sess.opts.cg.target_cpu.as_deref() {