Remove unneeded bounds from CodegenMethods and BuilderMethods.

Some of these are pulled in indirectly, e.g. `MiscMethods` via
`TypeMethods`.

Author: nnethercote

compiler/rustc_codegen_ssa/src/traits/builder.rs

@@ -2,13 +2,12 @@ use std::assert_matches::assert_matches;
 use std::ops::Deref;
 
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs;
-use rustc_middle::ty::layout::{FnAbiOf, HasParamEnv, LayoutOf, TyAndLayout};
+use rustc_middle::ty::layout::{FnAbiOf, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{Instance, Ty};
 use rustc_session::config::OptLevel;
 use rustc_span::Span;
 use rustc_target::abi::call::FnAbi;
 use rustc_target::abi::{Abi, Align, Scalar, Size, WrappingRange};
-use rustc_target::spec::HasTargetSpec;
 
 use super::abi::AbiBuilderMethods;
 use super::asm::AsmBuilderMethods;
@@ -45,8 +44,6 @@ pub trait BuilderMethods<'a, 'tcx>:
     + IntrinsicCallBuilderMethods<'tcx>
     + AsmBuilderMethods<'tcx>
     + StaticBuilderMethods
-    + HasParamEnv<'tcx>
-    + HasTargetSpec
 {
     type CodegenCx: CodegenMethods<'tcx>
         + BackendTypes<

compiler/rustc_codegen_ssa/src/traits/mod.rs

@@ -27,9 +27,6 @@ mod write;
 
 use std::fmt;
 
-use rustc_middle::ty::layout::{HasParamEnv, HasTyCtxt};
-use rustc_target::spec::HasTargetSpec;
-
 pub use self::abi::AbiBuilderMethods;
 pub use self::asm::{AsmBuilderMethods, AsmMethods, GlobalAsmOperandRef, InlineAsmOperandRef};
 pub use self::backend::{BackendTypes, CodegenBackend, ExtraBackendMethods};
@@ -50,12 +47,8 @@ pub use self::write::{ModuleBufferMethods, ThinBufferMethods, WriteBackendMethod
 pub trait CodegenObject = Copy + PartialEq + fmt::Debug;
 
 pub trait CodegenMethods<'tcx> = TypeMethods<'tcx>
-    + MiscMethods<'tcx>
     + ConstMethods<'tcx>
     + StaticMethods
     + DebugInfoMethods<'tcx>
     + AsmMethods<'tcx>
-    + PreDefineMethods<'tcx>
-    + HasParamEnv<'tcx>
-    + HasTyCtxt<'tcx>
-    + HasTargetSpec;
+    + PreDefineMethods<'tcx>;