Update compiler/rustc_session/src/options.rs

Co-authored-by: Ralf Jung <[email protected]>

Author: azhogin

compiler/rustc_session/src/options.rs

@@ -1979,7 +1979,7 @@ options! {
     randomize_layout: bool = (false, parse_bool, [TRACKED],
         "randomize the layout of types (default: no)"),
     regparm: Option<u32> = (None, parse_opt_number, [TRACKED],
-        "On x86-32 targets, the regparm N causes the compiler to pass N arguments \
+        "On x86-32 targets, setting this to N causes the compiler to pass N arguments \
         in registers EAX, EDX, and ECX instead of on the stack.\
         It is UNSOUND to link together crates that use different values for this flag!"),
     relax_elf_relocations: Option<bool> = (None, parse_opt_bool, [TRACKED],