Fix OperandSize: need clamp-to-32-bit behavior in most cases, but true-width for shifts.

2021-12-16 12:32:28 -08:00
parent 1323ae417e
commit fd171ca063
5 changed files with 178 additions and 162 deletions
--- a/cranelift/codegen/src/isa/x64/lower/isle.rs
+++ b/cranelift/codegen/src/isa/x64/lower/isle.rs
@@ -56,7 +56,16 @@ where
    isle_prelude_methods!();

    #[inline]
-    fn operand_size_of_type(&mut self, ty: Type) -> OperandSize {
+    fn operand_size_of_type_32_64(&mut self, ty: Type) -> OperandSize {
+        if ty.bits() == 64 {
+            OperandSize::Size64
+        } else {
+            OperandSize::Size32
+        }
+    }
+
+    #[inline]
+    fn raw_operand_size_of_type(&mut self, ty: Type) -> OperandSize {
        OperandSize::from_ty(ty)
    }