[gcc r14-8116] gccrs: Add two new steps to compile process

[Arthur Cohen]

https://gcc.gnu.org/g:cdf2cd9af4746b88df6fcaa7890c96796202bdc0

commit r14-8116-gcdf2cd9af4746b88df6fcaa7890c96796202bdc0
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Tue Oct 24 16:16:34 2023 +0200

    gccrs: Add two new steps to compile process
    
    Add the ast validation and feature gating steps to the compile pipeline.
    
    gcc/rust/ChangeLog:
    
            * lang.opt: Add the new compile options and update the enum values.
            * rust-session-manager.h (struct CompileOptions): Add the new steps to
            the enumeration.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/rust/lang.opt               | 26 ++++++++++++++++----------
 gcc/rust/rust-session-manager.h |  2 ++
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/gcc/rust/lang.opt b/gcc/rust/lang.opt
index 9a89fab6cb1..35798f5e01a 100644
--- a/gcc/rust/lang.opt
+++ b/gcc/rust/lang.opt
@@ -157,7 +157,7 @@ Rust Joined Separate
 
 frust-compile-until=
 Rust Joined RejectNegative Enum(frust_compile_until) Var(flag_rust_compile_until)
--frust-compile-until=[ast|attributecheck|expansion|nameresolution|lowering|typecheck|privacy|unsafety|const|compilation|end]             The pipeline will run up until this stage when compiling Rust code
+-frust-compile-until=[ast|attributecheck|expansion|astvalidation|featuregating|nameresolution|lowering|typecheck|privacy|unsafety|const|borrowcheck|compilation|end]             The pipeline will run up until this stage when compiling Rust code
 
 Enum
 Name(frust_compile_until) Type(int) UnknownError(unknown rust compile-until %qs)
@@ -172,31 +172,37 @@ EnumValue
 Enum(frust_compile_until) String(expansion) Value(2)
 
 EnumValue
-Enum(frust_compile_until) String(nameresolution) Value(3)
+Enum(frust_compile_until) String(astvalidation) Value(3)
 
 EnumValue
-Enum(frust_compile_until) String(lowering) Value(4)
+Enum(frust_compile_until) String(featuregating) Value(4)
 
 EnumValue
-Enum(frust_compile_until) String(typecheck) Value(5)
+Enum(frust_compile_until) String(nameresolution) Value(5)
 
 EnumValue
-Enum(frust_compile_until) String(privacy) Value(6)
+Enum(frust_compile_until) String(lowering) Value(6)
 
 EnumValue
-Enum(frust_compile_until) String(unsafety) Value(7)
+Enum(frust_compile_until) String(typecheck) Value(7)
 
 EnumValue
-Enum(frust_compile_until) String(const) Value(8)
+Enum(frust_compile_until) String(privacy) Value(8)
 
 EnumValue
-Enum(frust_compile_until) String(borrowcheck) Value(9)
+Enum(frust_compile_until) String(unsafety) Value(9)
 
 EnumValue
-Enum(frust_compile_until) String(compilation) Value(10)
+Enum(frust_compile_until) String(const) Value(10)
 
 EnumValue
-Enum(frust_compile_until) String(end) Value(11)
+Enum(frust_compile_until) String(borrowcheck) Value(11)
+
+EnumValue
+Enum(frust_compile_until) String(compilation) Value(12)
+
+EnumValue
+Enum(frust_compile_until) String(end) Value(13)
 
 frust-name-resolution-2.0
 Rust Var(flag_name_resolution_2_0)
diff --git a/gcc/rust/rust-session-manager.h b/gcc/rust/rust-session-manager.h
index e95ed11416f..41aad607905 100644
--- a/gcc/rust/rust-session-manager.h
+++ b/gcc/rust/rust-session-manager.h
@@ -249,6 +249,8 @@ struct CompileOptions
     Ast,
     AttributeCheck,
     Expansion,
+    ASTValidation,
+    FeatureGating,
     NameResolution,
     Lowering,
     TypeCheck,