[llvm] [RISCV] Rework memcpy test (PR #120364)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-msan` running on `sanitizer-buildbot9` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/94/builds/3693

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 85844 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.
FAIL: LLVM :: CodeGen/RISCV/memcpy.ll (40595 of 85844)
******************** TEST 'LLVM :: CodeGen/RISCV/memcpy.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llc < /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll -mtriple=riscv32    | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llc -mtriple=riscv32
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:278:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 14(a1)
             ^
<stdin>:122:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:123:2: note: possible intended match here
 li a2, 15
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:371:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 15(a1)
             ^
<stdin>:132:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:133:2: note: possible intended match here
 li a2, 16
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:468:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^
<stdin>:142:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:143:2: note: possible intended match here
 li a2, 31
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:861:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^
Step 11 (stage2/msan check) failure: stage2/msan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 85844 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.
FAIL: LLVM :: CodeGen/RISCV/memcpy.ll (40595 of 85844)
******************** TEST 'LLVM :: CodeGen/RISCV/memcpy.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llc < /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll -mtriple=riscv32    | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llc -mtriple=riscv32
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:278:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 14(a1)
             ^
<stdin>:122:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:123:2: note: possible intended match here
 li a2, 15
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:371:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 15(a1)
             ^
<stdin>:132:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:133:2: note: possible intended match here
 li a2, 16
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:468:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^
<stdin>:142:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:143:2: note: possible intended match here
 li a2, 31
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:861:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^
Step 13 (stage3/msan check) failure: stage3/msan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 82994 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40..
FAIL: LLVM :: CodeGen/RISCV/memcpy.ll (40598 of 82994)
******************** TEST 'LLVM :: CodeGen/RISCV/memcpy.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/llc < /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll -mtriple=riscv32    | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll --check-prefixes=RV32-BOTH,RV32
+ /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/llc -mtriple=riscv32
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:278:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 14(a1)
             ^
<stdin>:122:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:123:2: note: possible intended match here
 li a2, 15
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:371:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 15(a1)
             ^
<stdin>:132:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:133:2: note: possible intended match here
 li a2, 16
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:468:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^
<stdin>:142:18: note: scanning from here
# %bb.0: # %entry
                 ^
<stdin>:143:2: note: possible intended match here
 li a2, 31
 ^
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/test/CodeGen/RISCV/memcpy.ll:861:14: error: RV32-NEXT: expected string not found in input
; RV32-NEXT: lbu a2, 30(a1)
             ^

```

</details>

https://github.com/llvm/llvm-project/pull/120364