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| author | bjorn3 <bjorn3@users.noreply.github.com> | 2021-01-18 14:48:50 +0100 |
|---|---|---|
| committer | bjorn3 <bjorn3@users.noreply.github.com> | 2021-01-21 19:33:29 +0100 |
| commit | 173ec34e3db3bbbbe0117e2f831053a183d99a40 (patch) | |
| tree | cdce0c47cb05c2900a7537bbb4d1e75c5945ce93 /src | |
| parent | a19ef67f146df8da634cbab1e5ff5f3c2f3176d1 (diff) | |
| download | rust-173ec34e3db3bbbbe0117e2f831053a183d99a40.tar.gz rust-173ec34e3db3bbbbe0117e2f831053a183d99a40.zip | |
Add a feature flag to switch between oldbe and newbe
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/lib.rs b/src/lib.rs index 4b6431e42b5..2152d2ebdef 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -339,7 +339,12 @@ fn build_isa(sess: &Session) -> Box<dyn isa::TargetIsa + 'static> { let flags = settings::Flags::new(flags_builder); - let mut isa_builder = cranelift_codegen::isa::lookup(target_triple).unwrap(); + let variant = if cfg!(feature = "newbe") { + cranelift_codegen::isa::BackendVariant::MachInst + } else { + cranelift_codegen::isa::BackendVariant::Legacy + }; + let mut isa_builder = cranelift_codegen::isa::lookup_variant(target_triple, variant).unwrap(); // Don't use "haswell", as it implies `has_lzcnt`.macOS CI is still at Ivy Bridge EP, so `lzcnt` // is interpreted as `bsr`. isa_builder.enable("nehalem").unwrap(); |