Merge commit 'e8dca3e87d164d2806098c462c6ce41301341f68' into sync_from_cg_gcc

1 files changed, 10 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_gcc/src/base.rs b/compiler/rustc_codegen_gcc/src/base.rs
index f5aca35cdcb..e4ecbd46f0c 100644
--- a/compiler/rustc_codegen_gcc/src/base.rs
+++ b/compiler/rustc_codegen_gcc/src/base.rs
@@ -78,9 +78,19 @@ pub fn compile_codegen_unit<'tcx>(tcx: TyCtxt<'tcx>, cgu_name: Symbol, supports_
         let context = Context::default();
         // TODO(antoyo): only set on x86 platforms.
         context.add_command_line_option("-masm=intel");
+        // TODO(antoyo): only add the following cli argument if the feature is supported.
+        context.add_command_line_option("-msse2");
+        context.add_command_line_option("-mavx2");
+        context.add_command_line_option("-msha");
+        context.add_command_line_option("-mpclmul");
+        // FIXME(antoyo): the following causes an illegal instruction on vmovdqu64 in std_example on my CPU.
+        // Only add if the CPU supports it.
+        //context.add_command_line_option("-mavx512f");
         for arg in &tcx.sess.opts.cg.llvm_args {
             context.add_command_line_option(arg);
         }
+        // NOTE: This is needed to compile the file src/intrinsic/archs.rs during a bootstrap of rustc.
+        context.add_command_line_option("-fno-var-tracking-assignments");
         // NOTE: an optimization (https://github.com/rust-lang/rustc_codegen_gcc/issues/53).
         context.add_command_line_option("-fno-semantic-interposition");
         // NOTE: Rust relies on LLVM not doing TBAA (https://github.com/rust-lang/unsafe-code-guidelines/issues/292).