[llvm] [RISCV] Add tests for memcmp expansion (PR #107824)

[Alex Bradbury via llvm-commits]

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@@ -0,0 +1,1669 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -O2  \
+; RUN:   | FileCheck %s --check-prefix=CHECK-ALIGNED-RV32
+; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -O2  \
+; RUN:   | FileCheck %s --check-prefix=CHECK-ALIGNED-RV64
+; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+v -O2  \
+; RUN:   | FileCheck %s --check-prefixes=CHECK-ALIGNED-RV32,CHECK-ALIGNED-RV32-V
+; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+v -O2  \
+; RUN:   | FileCheck %s --check-prefixes=CHECK-ALIGNED-RV64,CHECK-ALIGNED-RV64-V
+; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+unaligned-scalar-mem -O2 \
+; RUN:   | FileCheck %s --check-prefix=CHECK-UNALIGNED-RV32
+; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+unaligned-scalar-mem -O2 \
+; RUN:   | FileCheck %s --check-prefix=CHECK-UNALIGNED-RV64
+; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+v,+unaligned-scalar-mem,+unaligned-vector-mem -O2 \
+; RUN:   | FileCheck %s --check-prefixes=CHECK-UNALIGNED-RV32,CHECK-UNALIGNED-RV32-V
+; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+v,+unaligned-scalar-mem,+unaligned-vector-mem -O2 \
+; RUN:   | FileCheck %s --check-prefixes=CHECK-UNALIGNED-RV64,CHECK-UNALIGNED-RV64-V
+
+declare i32 @bcmp(i8*, i8*, iXLen) nounwind readonly
+declare i32 @memcmp(i8*, i8*, iXLen) nounwind readonly
+
+define i1 @bcmp_size_0(i8* %s1, i8* %s2) {
+; CHECK-ALIGNED-RV32-LABEL: bcmp_size_0:
+; CHECK-ALIGNED-RV32:       # %bb.0: # %entry
+; CHECK-ALIGNED-RV32-NEXT:    addi sp, sp, -16
+; CHECK-ALIGNED-RV32-NEXT:    .cfi_def_cfa_offset 16
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asb wrote:

Please add `nounwind` to all these funcs.

https://github.com/llvm/llvm-project/pull/107824