[llvm] [Test] Add and update tests for `lrint`/`llrint` (NFC) (PR #152662)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,62 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+
+; Tests for lrint and llrint, with both i32 and i64 checked.
+
+; RUN: sed 's/ITy/i32/g' %s | llc -mtriple=wasm32-unknown-unknown | FileCheck %s
+; RUN: sed 's/ITy/i64/g' %s | llc -mtriple=wasm32-unknown-unknown | FileCheck %s
----------------
arsenm wrote:

This isn't a great practice, I'd say tests editing their content is worse than just duplicating tests 

https://github.com/llvm/llvm-project/pull/152662