master: Don't define a no-op splat as a VOP

The branch "master" has been updated in SBCL:
       via  ba19daa02493847a4353ddb7bd374413889cfa12 (commit)
      from  01bd7882b1af89d296a28a359419de20f423b3f2 (commit)

- Log -----------------------------------------------------------------
commit ba19daa02493847a4353ddb7bd374413889cfa12
Author: Stas Boukarev <[email protected]>
Date:   Sun Aug 30 12:35:09 2026 +0300

    Don't define a no-op splat as a VOP
    
    It creates non-transparent moves.
---
 src/compiler/pseudo-vops.lisp | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/src/compiler/pseudo-vops.lisp b/src/compiler/pseudo-vops.lisp
index 0dba9cfec..78a0e98df 100644
--- a/src/compiler/pseudo-vops.lisp
+++ b/src/compiler/pseudo-vops.lisp
@@ -62,13 +62,5 @@
 ;;; pseudo-atomic would benefit from a way to advise the allocator
 ;;; to fill with a non-default value.
 #-x86-64
-(define-vop ()
-  (:policy :fast-safe)
-  (:translate sb-vm::splat)
-  (:args (vector :scs (sb-vm::descriptor-reg))
-         (words :scs (sb-vm::unsigned-reg sb-vm::immediate)))
-  (:info value)
-  (:arg-types * sb-vm::positive-fixnum (:constant t))
-  (:results (result :scs (sb-vm::descriptor-reg)))
-  (:ignore words value)
-  (:generator 1 (move result vector)))
+(define-source-transform sb-vm::splat (vector n value)
+  `(prog1 ,vector ,n ,value))

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