Prepare inbounds_gep for opaque pointers

Implement inbounds_gep using LLVMBuildInBoundsGEP2 which takes an
explicit type argument instead of deriving it from a pointer type.

1 files changed, 3 insertions, 4 deletions

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs b/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
index de3f719b816..c33d35cc285 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/gdb.rs
@@ -15,12 +15,11 @@ use rustc_span::symbol::sym;
 /// .debug_gdb_scripts global is referenced, so it isn't removed by the linker.
 pub fn insert_reference_to_gdb_debug_scripts_section_global(bx: &mut Builder<'_, '_, '_>) {
     if needs_gdb_debug_scripts_section(bx) {
-        let gdb_debug_scripts_section = get_or_insert_gdb_debug_scripts_section_global(bx);
+        let gdb_debug_scripts_section =
+            bx.const_bitcast(get_or_insert_gdb_debug_scripts_section_global(bx), bx.type_i8p());
         // Load just the first byte as that's all that's necessary to force
         // LLVM to keep around the reference to the global.
-        let indices = [bx.const_i32(0), bx.const_i32(0)];
-        let element = bx.inbounds_gep(gdb_debug_scripts_section, &indices);
-        let volative_load_instruction = bx.volatile_load(bx.type_i8(), element);
+        let volative_load_instruction = bx.volatile_load(bx.type_i8(), gdb_debug_scripts_section);
         unsafe {
             llvm::LLVMSetAlignment(volative_load_instruction, 1);
         }