use (isub 1 $C) instead (iadd -1 $C)

2020-07-03 11:01:35 +03:00
parent d839d83f7e
commit 1033cf5748
4 changed files with 7 additions and 1 deletions
--- a/cranelift/codegen/src/preopt.peepmatic
+++ b/cranelift/codegen/src/preopt.peepmatic
@@ -195,4 +195,4 @@
 ;; Reminder by a power of two -> bitwise and with decreased by one constant.
 (=> (when (urem_imm $C $x)
          (is-power-of-two $C))
-    (band_imm $(iadd -1 $C) $x))
+    (band_imm $(isub 1 $C) $x))
--- a/cranelift/codegen/src/preopt.serialized
+++ b/cranelift/codegen/src/preopt.serialized