diff --git a/cranelift/codegen/meta/src/shared/instructions.rs b/cranelift/codegen/meta/src/shared/instructions.rs
index 901c48748e..5057ea3251 100644
--- a/cranelift/codegen/meta/src/shared/instructions.rs
+++ b/cranelift/codegen/meta/src/shared/instructions.rs
@@ -718,6 +718,12 @@ pub(crate) fn define(
             .build(),
     );
 
+    let ScalarBool = &TypeVar::new(
+        "ScalarBool",
+        "A scalar boolean type",
+        TypeSetBuilder::new().bools(Interval::All).build(),
+    );
+
     let iB = &TypeVar::new(
         "iB",
         "A scalar integer type",
@@ -3331,13 +3337,10 @@ pub(crate) fn define(
 
     let IntTo = &TypeVar::new(
         "IntTo",
-        "An integer type with the same number of lanes",
-        TypeSetBuilder::new()
-            .ints(Interval::All)
-            .simd_lanes(Interval::All)
-            .build(),
+        "A scalar integer type",
+        TypeSetBuilder::new().ints(Interval::All).build(),
     );
-    let x = &Operand::new("x", Bool);
+    let x = &Operand::new("x", ScalarBool);
     let a = &Operand::new("a", IntTo);
 
     ig.push(
@@ -3346,8 +3349,7 @@ pub(crate) fn define(
             r#"
         Convert `x` to an integer.
 
-        True maps to 1 and false maps to 0. The result type must have the same
-        number of vector lanes as the input.
+        True maps to 1 and false maps to 0.
         "#,
             &formats.unary,
         )
@@ -3355,6 +3357,17 @@ pub(crate) fn define(
         .operands_out(vec![a]),
     );
 
+    let IntTo = &TypeVar::new(
+        "IntTo",
+        "An integer type with the same number of lanes",
+        TypeSetBuilder::new()
+            .ints(Interval::All)
+            .simd_lanes(Interval::All)
+            .build(),
+    );
+    let x = &Operand::new("x", Bool);
+    let a = &Operand::new("a", IntTo);
+
     ig.push(
         Inst::new(
             "bmask",
diff --git a/cranelift/filetests/filetests/runtests/bint.clif b/cranelift/filetests/filetests/runtests/bint.clif
index cce35d1c7f..f107d12648 100644
--- a/cranelift/filetests/filetests/runtests/bint.clif
+++ b/cranelift/filetests/filetests/runtests/bint.clif
@@ -1,7 +1,91 @@
+test interpret
 test run
 target aarch64
 target x86_64
 
+function %bint_b1_i8_true() -> i8 {
+block0:
+  v0 = bconst.b1 true
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b1_i8_true() == 1
+
+function %bint_b1_i8_false() -> i8 {
+block0:
+  v0 = bconst.b1 false
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b1_i8_false() == 0
+
+function %bint_b1_i16_true() -> i16 {
+block0:
+  v0 = bconst.b1 true
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b1_i16_true() == 1
+
+function %bint_b1_i16_false() -> i16 {
+block0:
+  v0 = bconst.b1 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b1_i16_fals() == 0
+
+function %bint_b1_i32_true() -> i32 {
+block0:
+  v0 = bconst.b1 true
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b1_i32_true() == 1
+
+function %bint_b1_i32_false() -> i32 {
+block0:
+  v0 = bconst.b1 false
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b1_i32_fals() == 0
+
+function %bint_b1_i64_true() -> i64 {
+block0:
+  v0 = bconst.b1 true
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b1_i64_true() == 1
+
+function %bint_b1_i64_false() -> i64 {
+block0:
+  v0 = bconst.b1 false
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b1_i64_fals() == 0
+
+
+
+
+function %bint_b8_i8_true() -> i8 {
+block0:
+  v0 = bconst.b8 true
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b8_i8_true() == 1
+
+function %bint_b8_i8_false() -> i8 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b8_i8_false() == 0
+
 function %bint_b8_i16_true() -> i16 {
 block0:
   v0 = bconst.b8 true
@@ -10,6 +94,65 @@ block0:
 }
 ; run: %bint_b8_i16_true() == 1
 
+function %bint_b8_i16_false() -> i16 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b8_i16_fals() == 0
+
+function %bint_b8_i32_true() -> i32 {
+block0:
+  v0 = bconst.b8 true
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b8_i32_true() == 1
+
+function %bint_b8_i32_false() -> i32 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b8_i32_fals() == 0
+
+function %bint_b8_i64_true() -> i64 {
+block0:
+  v0 = bconst.b8 true
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b8_i64_true() == 1
+
+function %bint_b8_i64_false() -> i64 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b8_i64_fals() == 0
+
+
+
+
+
+function %bint_b16_i8_true() -> i8 {
+block0:
+  v0 = bconst.b16 true
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b16_i8_true() == 1
+
+function %bint_b16_i8_false() -> i8 {
+block0:
+  v0 = bconst.b16 false
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b16_i8_fals() == 0
 
 function %bint_b16_i16_true() -> i16 {
 block0:
@@ -17,16 +160,7 @@ block0:
   v1 = bint.i16 v0
   return v1
 }
-; run: %bint_b16_i16_true() == 1
-
-function %bint_b8_i16_false() -> i16 {
-block0:
-  v0 = bconst.b8 false
-  v1 = bint.i16 v0
-  return v1
-}
-; run: %bint_b8_i16_false() == 0
-
+; run: %bint_b16_i16_tru() == 1
 
 function %bint_b16_i16_false() -> i16 {
 block0:
@@ -34,4 +168,172 @@ block0:
   v1 = bint.i16 v0
   return v1
 }
-; run: %bint_b16_i16_false() == 0
+; run: %bint_b16_i16_fal() == 0
+
+function %bint_b16_i32_true() -> i32 {
+block0:
+  v0 = bconst.b16 true
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b16_i32_tru() == 1
+
+function %bint_b16_i32_false() -> i32 {
+block0:
+  v0 = bconst.b16 false
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b16_i32_fal() == 0
+
+function %bint_b16_i64_true() -> i64 {
+block0:
+  v0 = bconst.b16 true
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b16_i64_tru() == 1
+
+function %bint_b16_i64_false() -> i64 {
+block0:
+  v0 = bconst.b16 false
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b16_i64_fal() == 0
+
+
+
+
+function %bint_b32_i8_true() -> i8 {
+block0:
+  v0 = bconst.b32 true
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b32_i8_true() == 1
+
+function %bint_b32_i8_false() -> i8 {
+block0:
+  v0 = bconst.b32 false
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b32_i8_fals() == 0
+
+function %bint_b32_i16_true() -> i16 {
+block0:
+  v0 = bconst.b32 true
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b32_i16_tru() == 1
+
+function %bint_b32_i16_false() -> i16 {
+block0:
+  v0 = bconst.b32 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b32_i16_fal() == 0
+
+function %bint_b32_i32_true() -> i32 {
+block0:
+  v0 = bconst.b32 true
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b32_i32_tru() == 1
+
+function %bint_b32_i32_false() -> i32 {
+block0:
+  v0 = bconst.b32 false
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b32_i32_fal() == 0
+
+function %bint_b32_i64_true() -> i64 {
+block0:
+  v0 = bconst.b32 true
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b32_i64_tru() == 1
+
+function %bint_b32_i64_false() -> i64 {
+block0:
+  v0 = bconst.b32 false
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b32_i64_fal() == 0
+
+
+
+
+
+
+function %bint_b64_i8_true() -> i8 {
+block0:
+  v0 = bconst.b64 true
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b64_i8_true() == 1
+
+function %bint_b64_i8_false() -> i8 {
+block0:
+  v0 = bconst.b64 false
+  v1 = bint.i8 v0
+  return v1
+}
+; run: %bint_b64_i8_fals() == 0
+
+function %bint_b64_i16_true() -> i16 {
+block0:
+  v0 = bconst.b64 true
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b64_i16_tru() == 1
+
+function %bint_b64_i16_false() -> i16 {
+block0:
+  v0 = bconst.b64 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b64_i16_fal() == 0
+
+function %bint_b64_i32_true() -> i32 {
+block0:
+  v0 = bconst.b64 true
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b64_i32_tru() == 1
+
+function %bint_b64_i32_false() -> i32 {
+block0:
+  v0 = bconst.b64 false
+  v1 = bint.i32 v0
+  return v1
+}
+; run: %bint_b64_i32_fal() == 0
+
+function %bint_b64_i64_true() -> i64 {
+block0:
+  v0 = bconst.b64 true
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b64_i64_tru() == 1
+
+function %bint_b64_i64_false() -> i64 {
+block0:
+  v0 = bconst.b64 false
+  v1 = bint.i64 v0
+  return v1
+}
+; run: %bint_b64_i64_fal() == 0
diff --git a/cranelift/filetests/filetests/runtests/i128-bint.clif b/cranelift/filetests/filetests/runtests/i128-bint.clif
index 83c9152d51..e7114dbbc4 100644
--- a/cranelift/filetests/filetests/runtests/i128-bint.clif
+++ b/cranelift/filetests/filetests/runtests/i128-bint.clif
@@ -1,12 +1,85 @@
+test interpret
 test run
 set enable_llvm_abi_extensions=true
 target aarch64
 target x86_64
 
-function %bint_b8_i128() -> i128 {
+function %bint_b1_i128_true() -> i128 {
+block0:
+  v0 = bconst.b1 true
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b1_i128_tru() == 1
+
+function %bint_b1_i128_false() -> i128 {
+block0:
+  v0 = bconst.b1 false
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b1_i128_fal() == 0
+
+function %bint_b8_i128_true() -> i128 {
 block0:
   v0 = bconst.b8 true
   v1 = bint.i128 v0
   return v1
 }
-; run: %bint_b8_i128() == 1
+; run: %bint_b8_i128_tru() == 1
+
+function %bint_b8_i128_false() -> i128 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b8_i128_fal() == 0
+
+function %bint_b16_i128_true() -> i128 {
+block0:
+  v0 = bconst.b16 true
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b16_i128_tr() == 1
+
+function %bint_b16_i128_false() -> i128 {
+block0:
+  v0 = bconst.b16 false
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b16_i128_fa() == 0
+
+function %bint_b32_i128_true() -> i128 {
+block0:
+  v0 = bconst.b32 true
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b32_i128_tr() == 1
+
+function %bint_b32_i128_false() -> i128 {
+block0:
+  v0 = bconst.b32 false
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b32_i128_fa() == 0
+
+function %bint_b64_i128_true() -> i128 {
+block0:
+  v0 = bconst.b64 true
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b64_i128_tr() == 1
+
+function %bint_b64_i128_false() -> i128 {
+block0:
+  v0 = bconst.b64 false
+  v1 = bint.i128 v0
+  return v1
+}
+; run: %bint_b64_i128_fa() == 0
diff --git a/cranelift/interpreter/src/step.rs b/cranelift/interpreter/src/step.rs
index 1e9d7c5369..1b9f21ad52 100644
--- a/cranelift/interpreter/src/step.rs
+++ b/cranelift/interpreter/src/step.rs
@@ -716,11 +716,15 @@ where
         | Opcode::ScalarToVector
         | Opcode::Breduce
         | Opcode::Bextend
-        | Opcode::Bint
         | Opcode::Ireduce => assign(Value::convert(
             arg(0)?,
             ValueConversionKind::Exact(ctrl_ty),
         )?),
+        Opcode::Bint => {
+            let bool = arg(0)?.into_bool()?;
+            let int = if bool { 1 } else { 0 };
+            assign(Value::int(int, ctrl_ty)?)
+        }
         Opcode::Snarrow | Opcode::Unarrow | Opcode::Uunarrow => {
             let arg0 = extractlanes(&arg(0)?, ctrl_ty.lane_type())?;
             let arg1 = extractlanes(&arg(1)?, ctrl_ty.lane_type())?;