Auto merge of #28427 - DiamondLovesYou:gdb-debug-script-load, r=alexcrichton

This is so LLVM isn't forced to load every byte of it. Also sets the alignment of
the load. Adds a test for the debug script section.

r? @alexcrichton

src/test/codegen/adjustments.rs

@@ -10,6 +10,8 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
+
 // Hack to get the correct size for the length part in slices
 // CHECK: @helper([[USIZE:i[0-9]+]])
 #[no_mangle]

src/test/codegen/coercions.rs

@@ -10,6 +10,8 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
+
 static X: i32 = 5;
 
 // CHECK-LABEL: @raw_ptr_to_raw_ptr_noop

src/test/codegen/extern-functions.rs

@@ -10,6 +10,7 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
 #![feature(unwind_attributes)]
 
 extern {

src/test/codegen/function-arguments.rs

@@ -10,6 +10,7 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
 #![feature(allocator)]
 
 pub struct S {

src/test/codegen/gdb_debug_script_load.rs

@@ -0,0 +1,25 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-tidy-linelength
+// ignore-windows
+// ignore-macos
+
+// compile-flags: -g -C no-prepopulate-passes
+
+#![feature(start)]
+
+// CHECK-LABEL: @main
+// CHECK: load volatile i8, i8* getelementptr inbounds ([[B:\[[0-9]* x i8\]]], [[B]]* @__rustc_debug_gdb_scripts_section__, i32 0, i32 0), align 1
+
+#[start]
+fn start(_: isize, _: *const *const u8) -> isize {
+    return 0;
+}

src/test/codegen/link_section.rs

@@ -10,6 +10,8 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
+
 // CHECK: @VAR1 = constant i32 1, section ".test_one"
 #[no_mangle]
 #[link_section = ".test_one"]

src/test/codegen/loads.rs

@@ -10,6 +10,8 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
+
 pub struct Bytes {
   a: u8,
   b: u8,

src/test/codegen/stores.rs

@@ -10,6 +10,8 @@
 
 // compile-flags: -C no-prepopulate-passes
 
+#![crate_type = "lib"]
+
 pub struct Bytes {
   a: u8,
   b: u8,