[llvm] [llvm][ARM]Add widen global arrays pass (PR #107120)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-sles-build-only` running on `rocm-worker-hw-04-sles` while building `llvm` at step 8 "Add check check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/140/builds/8956

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

```
Step 8 (Add check check-llvm) failure: test (failure)
******************** TEST 'LLVM :: Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/opt < /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/test/Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll -mtriple=arm-none-eabi -passes=globalopt -S | /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/FileCheck /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/test/Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll
+ /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/opt -mtriple=arm-none-eabi -passes=globalopt -S
+ /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/FileCheck /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/test/Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/opt: warning: failed to infer data layout: unable to get target for 'arm-unknown-none-eabi', see --version and --triple.
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/bin/opt: WARNING: failed to create target machine for 'arm-unknown-none-eabi': unable to get target for 'arm-unknown-none-eabi', see --version and --triple.
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/test/Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll:9:15: error: CHECK-NEXT: expected string not found in input
; CHECK-NEXT: [[SOMETHING1:%.*]] = alloca [6 x i16], align 1
              ^
<stdin>:8:7: note: scanning from here
entry:
      ^
<stdin>:9:7: note: possible intended match here
 %something = alloca [5 x i16], align 1
      ^

Input file: <stdin>
Check file: /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/test/Transforms/GlobalOpt/ARM/arm-widen-non-byte-array.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
          1: ; ModuleID = '<stdin>' 
          2: source_filename = "<stdin>" 
          3: target triple = "arm-unknown-none-eabi" 
          4:  
          5: @.i16 = private unnamed_addr constant [5 x i16] [i16 1, i16 2, i16 3, i16 4, i16 5], align 1 
          6:  
          7: define void @memcpy_i16_array() local_unnamed_addr { 
          8: entry: 
next:9'0           X error: no match found
          9:  %something = alloca [5 x i16], align 1 
next:9'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
next:9'1           ?                                  possible intended match
         10:  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(10) %something, ptr noundef nonnull align 1 dereferenceable(10) @.i16, i32 10, i1 false) 
next:9'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         11:  %call2 = call i32 @bar(ptr nonnull %something) 
next:9'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         12:  ret void 
next:9'0     ~~~~~~~~~~
         13: } 
next:9'0     ~~
         14:  
next:9'0     ~
          .
...

```

</details>

https://github.com/llvm/llvm-project/pull/107120