[llvm] Matched some basic ISD::AVGFLOORU patterns (PR #84903)

[Shourya Goel via llvm-commits]

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@@ -0,0 +1,11 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=aarch64 | FileCheck %s
+
+define i4 @fixedwidth(i4 %a0, i4 %a1)  {
+; CHECK-LABEL: fixedwidth:
+  %and = and i4 %a0, %a1
+  %xor = xor i4 %a0, %a1
+  %srl = lshr i4 %xor, 1
+  %res = add i4 %and, %srl
+  ret i4 %res
+}
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Sh0g0-1758 wrote:

I moved the test and ran the script. but this had an unintended effect of modifying other tests also. 

https://github.com/llvm/llvm-project/pull/84903