[llvm] [SelectionDAG] Expand [US]CMP using arithmetic on boolean values instead of selects (PR #98774)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,108 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --mtriple=loongarch64 -mattr=+d --verify-machineinstrs < %s | FileCheck %s
+
+define i8 @scmp.8.8(i8 %x, i8 %y) nounwind {
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nikic wrote:

Same here, loongarch64 also uses signext/zeroext.

https://github.com/llvm/llvm-project/pull/98774