diff --git a/src/builder.rs b/src/builder.rs
index 08930387ccb..867fd531f50 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -1490,6 +1490,9 @@ pub fn vector_select(&mut self, cond: RValue<'gcc>, then_val: RValue<'gcc>, else
         let zeros = self.context.new_rvalue_from_vector(None, cond_type, &zeros);
 
         let masks = self.context.new_comparison(None, ComparisonOp::NotEquals, cond, zeros);
+        // NOTE: masks is a vector of integers, but the values can be vectors of floats, so use bitcast to make
+        // the & operation work.
+        let masks = self.bitcast_if_needed(masks, then_val.get_type());
         let then_vals = masks & then_val;
 
         let ones = vec![self.context.new_rvalue_one(element_type); num_units];
@@ -1509,6 +1512,16 @@ pub fn vector_select(&mut self, cond: RValue<'gcc>, then_val: RValue<'gcc>, else
 fn difference_or_zero<'gcc>(a: RValue<'gcc>, b: RValue<'gcc>, context: &'gcc Context<'gcc>) -> RValue<'gcc> {
     let difference = a - b;
     let masks = context.new_comparison(None, ComparisonOp::GreaterThanEquals, b, a);
+    // NOTE: masks is a vector of integers, but the values can be vectors of floats, so use bitcast to make
+    // the & operation work.
+    let a_type = a.get_type();
+    let masks =
+        if masks.get_type() != a_type {
+            context.new_bitcast(None, masks, a_type)
+        }
+        else {
+            masks
+        };
     difference & masks
 }