[llvm] [RISCV] Add test coverage for memmove (PR #120232)

[Pengcheng Wang via llvm-commits]

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@@ -0,0 +1,398 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=riscv32 \
+; RUN:   | FileCheck %s --check-prefixes=RV32-BOTH,RV32
+; RUN: llc < %s -mtriple=riscv64 \
+; RUN:   | FileCheck %s --check-prefixes=RV64-BOTH,RV64
+; RUN: llc < %s -mtriple=riscv32 -mattr=+unaligned-scalar-mem \
+; RUN:   | FileCheck %s --check-prefixes=RV32-BOTH,RV32-FAST
+; RUN: llc < %s -mtriple=riscv64 -mattr=+unaligned-scalar-mem \
+; RUN:   | FileCheck %s --check-prefixes=RV64-BOTH,RV64-FAST
+%struct.x = type { i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8 }
+
+ at src = external dso_local global %struct.x
+ at dst = external dso_local global %struct.x
+
+ at .str1 = private unnamed_addr constant [31 x i8] c"DHRYSTONE PROGRAM, SOME STRING\00", align 1
+ at .str2 = private unnamed_addr constant [36 x i8] c"DHRYSTONE PROGRAM, SOME STRING BLAH\00", align 1
+ at .str3 = private unnamed_addr constant [24 x i8] c"DHRYSTONE PROGRAM, SOME\00", align 1
+ at .str4 = private unnamed_addr constant [18 x i8] c"DHRYSTONE PROGR  \00", align 1
+ at .str5 = private unnamed_addr constant [7 x i8] c"DHRYST\00", align 1
+ at .str6 = private unnamed_addr constant [14 x i8] c"/tmp/rmXXXXXX\00", align 1
+ at spool.splbuf = internal global [512 x i8] zeroinitializer, align 16
+
+define i32 @t0() {
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wangpc-pp wrote:

This file is copied from `memcpy.ll`, which was copied from ARM/AArch64's tests I think. :-)
I will rework it.

https://github.com/llvm/llvm-project/pull/120232