Rename header -> directives

compiletest has confusingly two terminology to refer to the same concept
-- "headers" and "directives". To make this more self-consistent and
less confusing, stick with "directives" only.

This commit **intentionally** tries to be limited to move-only (modulo
some key usage reference renames) to help git history.

Author: jieyouxu

src/tools/compiletest/src/header.rs renamed to src/tools/compiletest/src/directives.rs

@@ -13,8 +13,8 @@ use crate::common::{Config, Debugger, FailMode, Mode, PassMode};
 use crate::debuggers::{extract_cdb_version, extract_gdb_version};
 use crate::errors::ErrorKind;
 use crate::executor::{CollectedTestDesc, ShouldPanic};
-use crate::header::auxiliary::{AuxProps, parse_and_update_aux};
-use crate::header::needs::CachedNeedsConditions;
+use crate::directives::auxiliary::{AuxProps, parse_and_update_aux};
+use crate::directives::needs::CachedNeedsConditions;
 use crate::help;
 use crate::util::static_regex;
 

src/tools/compiletest/src/header/auxiliary.rs renamed to src/tools/compiletest/src/directives/auxiliary.rs

@@ -1,7 +1,7 @@
 use std::collections::HashSet;
 
 use crate::common::{CompareMode, Config, Debugger};
-use crate::header::IgnoreDecision;
+use crate::directives::IgnoreDecision;
 
 const EXTRA_ARCHS: &[&str] = &["spirv"];
 

src/tools/compiletest/src/header/cfg.rs renamed to src/tools/compiletest/src/directives/cfg.rs

@@ -1,5 +1,5 @@
 use crate::common::{Config, KNOWN_CRATE_TYPES, KNOWN_TARGET_HAS_ATOMIC_WIDTHS, Sanitizer};
-use crate::header::{IgnoreDecision, llvm_has_libzstd};
+use crate::directives::{IgnoreDecision, llvm_has_libzstd};
 
 pub(super) fn handle_needs(
     cache: &CachedNeedsConditions,

src/tools/compiletest/src/header/needs.rs renamed to src/tools/compiletest/src/directives/needs.rs

@@ -19,7 +19,7 @@ fn make_test_description<R: Read>(
 ) -> CollectedTestDesc {
     let cache = HeadersCache::load(config);
     let mut poisoned = false;
-    let test = crate::header::make_test_description(
+    let test = crate::directives::make_test_description(
         config,
         &cache,
         name,

src/tools/compiletest/src/header/test-auxillary/error_annotation.rs renamed to src/tools/compiletest/src/directives/test-auxillary/error_annotation.rs

@@ -14,7 +14,7 @@ mod debuggers;
 pub mod diagnostics;
 pub mod errors;
 mod executor;
-pub mod header;
+pub mod directives;
 mod json;
 mod raise_fd_limit;
 mod read2;
@@ -37,13 +37,13 @@ use rayon::iter::{ParallelBridge, ParallelIterator};
 use tracing::debug;
 use walkdir::WalkDir;
 
-use self::header::{EarlyProps, make_test_description};
+use self::directives::{EarlyProps, make_test_description};
 use crate::common::{
     CompareMode, Config, Debugger, Mode, PassMode, TestPaths, UI_EXTENSIONS, expected_output_path,
     output_base_dir, output_relative_path,
 };
 use crate::executor::{CollectedTest, ColorConfig, OutputFormat};
-use crate::header::HeadersCache;
+use crate::directives::HeadersCache;
 use crate::util::logv;
 
 /// Creates the `Config` instance for this invocation of compiletest.
@@ -254,8 +254,8 @@ pub fn parse_config(args: Vec<String>) -> Config {
         Some(x) => panic!("argument for --color must be auto, always, or never, but found `{}`", x),
     };
     let llvm_version =
-        matches.opt_str("llvm-version").as_deref().map(header::extract_llvm_version).or_else(
-            || header::extract_llvm_version_from_binary(&matches.opt_str("llvm-filecheck")?),
+        matches.opt_str("llvm-version").as_deref().map(directives::extract_llvm_version).or_else(
+            || directives::extract_llvm_version_from_binary(&matches.opt_str("llvm-filecheck")?),
         );
 
     let run_ignored = matches.opt_present("ignored");