[llvm] [LoongArch][NFC] Pre-commit tests for memcmp expansion (PR #166718)

[Lu Weining via llvm-commits]

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@@ -0,0 +1,1147 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: sed 's/iGRLen/i32/g' %s | llc --mtriple=loongarch32 --mattr=+ual \
+; RUN:   | FileCheck %s --check-prefixes=CHECK,LA32,LA32-UAL
+; RUN: sed 's/iGRLen/i64/g' %s | llc --mtriple=loongarch64 --mattr=+ual \
+; RUN:   | FileCheck %s --check-prefixes=CHECK,LA64,LA64-UAL
+; RUN: sed 's/iGRLen/i32/g' %s | llc --mtriple=loongarch32 --mattr=-ual \
+; RUN:   | FileCheck %s --check-prefixes=CHECK,LA32,LA32-NUAL
+; RUN: sed 's/iGRLen/i64/g' %s | llc --mtriple=loongarch64 --mattr=-ual \
+; RUN:   | FileCheck %s --check-prefixes=CHECK,LA64,LA64-NUAL
+
+declare i32 @bcmp(ptr, ptr, iGRLen) nounwind readonly
+declare i32 @memcmp(ptr, ptr, iGRLen) nounwind readonly
+
+define i32 @bcmp_size_0(ptr %s1, ptr %s2) nounwind optsize {
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SixWeining wrote:

Add `signext`.

https://github.com/llvm/llvm-project/pull/166718