[clang] [llvm] [AArch64][SME] Remove SelectionDAG SME ABI lowering (PR #190950)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 133160 tests passed
* 3072 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### LLVM
<details>
<summary>LLVM.Verifier/sme-attributes.ll</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
not c:\_work\llvm-project\llvm-project\build\bin\llvm-as.exe C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll -o /dev/null 2>&1 | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll
# executed command: not 'c:\_work\llvm-project\llvm-project\build\bin\llvm-as.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll' -o /dev/null
# note: command had no output on stdout or stderr
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll'
# .---command stderr------------
# | C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll:73:10: error: CHECK: expected string not found in input
# | ; CHECK: Attribute 'aarch64_zt0_undef' can only be applied to a callsite.
# |          ^
# | <stdin>:46:167: note: scanning from here
# | Attributes 'aarch64_new_zt0', 'aarch64_in_zt0', 'aarch64_out_zt0', 'aarch64_inout_zt0', 'aarch64_preserves_zt0' and 'aarch64_za_state_agnostic' are mutually exclusive
# |                                                                                                                                                                       ^
# | 
# | Input file: <stdin>
# | Check file: C:\_work\llvm-project\llvm-project\llvm\test\Verifier\sme-attributes.ll
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |           .
# |           .
# |           .
# |          41: ptr @zt0_in_inout 
# |          42: Attributes 'aarch64_new_zt0', 'aarch64_in_zt0', 'aarch64_out_zt0', 'aarch64_inout_zt0', 'aarch64_preserves_zt0' and 'aarch64_za_state_agnostic' are mutually exclusive 
# |          43: ptr @zt0_in_out 
# |          44: Attributes 'aarch64_new_zt0', 'aarch64_in_zt0', 'aarch64_out_zt0', 'aarch64_inout_zt0', 'aarch64_preserves_zt0' and 'aarch64_za_state_agnostic' are mutually exclusive 
# |          45: ptr @zt0_inout_out 
# |          46: Attributes 'aarch64_new_zt0', 'aarch64_in_zt0', 'aarch64_out_zt0', 'aarch64_inout_zt0', 'aarch64_preserves_zt0' and 'aarch64_za_state_agnostic' are mutually exclusive 
# | check:73                                                                                                                                                                           X error: no match found
# |          47: ptr @zt0_inout_agnostic 
# | check:73     ~~~~~~~~~~~~~~~~~~~~~~~~
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/190950