diff --git a/compiler/rustc_middle/src/ty/layout.rs b/compiler/rustc_middle/src/ty/layout.rs
index 666160ba49763..fa0711193df48 100644
--- a/compiler/rustc_middle/src/ty/layout.rs
+++ b/compiler/rustc_middle/src/ty/layout.rs
@@ -15,7 +15,7 @@ use rustc_session::{DataTypeKind, FieldInfo, SizeKind, VariantInfo};
 use rustc_span::symbol::{Ident, Symbol};
 use rustc_span::DUMMY_SP;
 use rustc_target::abi::call::{
-    ArgAbi, ArgAttribute, ArgAttributes, Conv, FnAbi, PassMode, Reg, RegKind,
+    ArgAbi, ArgAttribute, ArgAttributes, ArgExtension, Conv, FnAbi, PassMode, Reg, RegKind,
 };
 use rustc_target::abi::*;
 use rustc_target::spec::{abi::Abi as SpecAbi, HasTargetSpec, PanicStrategy};
@@ -2619,7 +2619,7 @@ where
                                       is_return: bool| {
             // Booleans are always an i1 that needs to be zero-extended.
             if scalar.is_bool() {
-                attrs.zext();
+                attrs.ext(ArgExtension::Zext);
                 return;
             }
 
diff --git a/compiler/rustc_target/src/abi/call/mips64.rs b/compiler/rustc_target/src/abi/call/mips64.rs
index f91552740feb8..a630c84142b4d 100644
--- a/compiler/rustc_target/src/abi/call/mips64.rs
+++ b/compiler/rustc_target/src/abi/call/mips64.rs
@@ -1,4 +1,4 @@
-use crate::abi::call::{ArgAbi, CastTarget, FnAbi, PassMode, Reg, RegKind, Uniform};
+use crate::abi::call::{ArgAbi, ArgExtension, CastTarget, FnAbi, PassMode, Reg, RegKind, Uniform};
 use crate::abi::{self, HasDataLayout, LayoutOf, Size, TyAndLayout, TyAndLayoutMethods};
 
 fn extend_integer_width_mips<Ty>(arg: &mut ArgAbi<'_, Ty>, bits: u64) {
@@ -7,7 +7,7 @@ fn extend_integer_width_mips<Ty>(arg: &mut ArgAbi<'_, Ty>, bits: u64) {
         if let abi::Int(i, signed) = scalar.value {
             if !signed && i.size().bits() == 32 {
                 if let PassMode::Direct(ref mut attrs) = arg.mode {
-                    attrs.sext();
+                    attrs.ext(ArgExtension::Sext);
                     return;
                 }
             }
diff --git a/compiler/rustc_target/src/abi/call/mod.rs b/compiler/rustc_target/src/abi/call/mod.rs
index 83e08f637e3a2..5de9a8dfa7ac1 100644
--- a/compiler/rustc_target/src/abi/call/mod.rs
+++ b/compiler/rustc_target/src/abi/call/mod.rs
@@ -96,15 +96,9 @@ impl ArgAttributes {
         }
     }
 
-    pub fn zext(&mut self) -> &mut Self {
-        assert_ne!(self.arg_ext, ArgExtension::Sext);
-        self.arg_ext = ArgExtension::Zext;
-        self
-    }
-
-    pub fn sext(&mut self) -> &mut Self {
-        assert_ne!(self.arg_ext, ArgExtension::Zext);
-        self.arg_ext = ArgExtension::Sext;
+    pub fn ext(&mut self, ext: ArgExtension) -> &mut Self {
+        assert!(self.arg_ext == ArgExtension::None || self.arg_ext == ext);
+        self.arg_ext = ext;
         self
     }
 
@@ -481,9 +475,9 @@ impl<'a, Ty> ArgAbi<'a, Ty> {
                 if i.size().bits() < bits {
                     if let PassMode::Direct(ref mut attrs) = self.mode {
                         if signed {
-                            attrs.sext()
+                            attrs.ext(ArgExtension::Sext)
                         } else {
-                            attrs.zext()
+                            attrs.ext(ArgExtension::Zext)
                         };
                     }
                 }
diff --git a/compiler/rustc_target/src/abi/call/riscv.rs b/compiler/rustc_target/src/abi/call/riscv.rs
index 9c4ac85ce6135..1ab881dd13d1c 100644
--- a/compiler/rustc_target/src/abi/call/riscv.rs
+++ b/compiler/rustc_target/src/abi/call/riscv.rs
@@ -4,7 +4,7 @@
 // Reference: Clang RISC-V ELF psABI lowering code
 // https://github.com/llvm/llvm-project/blob/8e780252a7284be45cf1ba224cabd884847e8e92/clang/lib/CodeGen/TargetInfo.cpp#L9311-L9773
 
-use crate::abi::call::{ArgAbi, CastTarget, FnAbi, PassMode, Reg, RegKind, Uniform};
+use crate::abi::call::{ArgAbi, ArgExtension, CastTarget, FnAbi, PassMode, Reg, RegKind, Uniform};
 use crate::abi::{
     self, Abi, FieldsShape, HasDataLayout, LayoutOf, Size, TyAndLayout, TyAndLayoutMethods,
 };
@@ -308,7 +308,7 @@ fn extend_integer_width<'a, Ty>(arg: &mut ArgAbi<'a, Ty>, xlen: u64) {
             // 32-bit integers are always sign-extended
             if i.size().bits() == 32 && xlen > 32 {
                 if let PassMode::Direct(ref mut attrs) = arg.mode {
-                    attrs.sext();
+                    attrs.ext(ArgExtension::Sext);
                     return;
                 }
             }