[llvm] [SimplifyCFG] Treat umul + extract pattern as cheap single instruction. (PR #124933)

[Nikita Popov via llvm-commits]

================
@@ -0,0 +1,73 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
+
+define dso_local signext range(i16 0, 2) i16 @func2(i64 noundef %x, i64 noundef %y) local_unnamed_addr #0 {
----------------
nikic wrote:

You can drop the dso_local, range, etc here.

https://github.com/llvm/llvm-project/pull/124933