Merge commit 'c19edfd71a1d0ddef86c2c67fdb40718d40a72b4' into sync_cg_clif-2022-07-25

[rust.git] / src / allocator.rs

diff --git a/src/allocator.rs b/src/allocator.rs
index 637d30f9344f98b6f7c77a0fc46cb2a910ff8b49..6d321c7b298a730464bbf88e4e723afc52a7e501 100644 (file)
--- a/src/allocator.rs
+++ b/src/allocator.rs
@@ -3,8 +3,8 @@
 
 use crate::prelude::*;
 
-use cranelift_codegen::binemit::{NullStackMapSink, NullTrapSink};
 use rustc_ast::expand::allocator::{AllocatorKind, AllocatorTy, ALLOCATOR_METHODS};
+use rustc_session::config::OomStrategy;
 
 /// Returns whether an allocator shim was created
 pub(crate) fn codegen(
@@ -19,7 +19,13 @@ pub(crate) fn codegen(
     if any_dynamic_crate {
         false
     } else if let Some(kind) = tcx.allocator_kind(()) {
-        codegen_inner(module, unwind_context, kind, tcx.lang_items().oom().is_some());
+        codegen_inner(
+            module,
+            unwind_context,
+            kind,
+            tcx.lang_items().oom().is_some(),
+            tcx.sess.opts.unstable_opts.oom,
+        );
         true
     } else {
         false
@@ -31,6 +37,7 @@ fn codegen_inner(
     unwind_context: &mut UnwindContext,
     kind: AllocatorKind,
     has_alloc_error_handler: bool,
+    oom_strategy: OomStrategy,
 ) {
     let usize_ty = module.target_config().pointer_type();
 
@@ -91,9 +98,7 @@ fn codegen_inner(
             bcx.seal_all_blocks();
             bcx.finalize();
         }
-        module
-            .define_function(func_id, &mut ctx, &mut NullTrapSink {}, &mut NullStackMapSink {})
-            .unwrap();
+        module.define_function(func_id, &mut ctx).unwrap();
         unwind_context.add_function(func_id, &ctx, module.isa());
     }
 
@@ -130,8 +135,13 @@ fn codegen_inner(
         bcx.seal_all_blocks();
         bcx.finalize();
     }
-    module
-        .define_function(func_id, &mut ctx, &mut NullTrapSink {}, &mut NullStackMapSink {})
-        .unwrap();
+    module.define_function(func_id, &mut ctx).unwrap();
     unwind_context.add_function(func_id, &ctx, module.isa());
+
+    let data_id = module.declare_data(OomStrategy::SYMBOL, Linkage::Export, false, false).unwrap();
+    let mut data_ctx = DataContext::new();
+    data_ctx.set_align(1);
+    let val = oom_strategy.should_panic();
+    data_ctx.define(Box::new([val]));
+    module.define_data(data_id, &data_ctx).unwrap();
 }