[llvm] Reland "[amdgpu] Add llvm.amdgcn.init.whole.wave intrinsic" (#108054)" (PR #108173)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lld-x86_64-ubuntu-fast` running on `as-builder-4` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/33/builds/2870

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: CodeGen/AMDGPU/si-init-whole-wave.mir' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 2: /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o -  /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir | /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/FileCheck /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
+ /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o - /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
+ /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/FileCheck /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o - /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
 #0 0x000055642e8076b0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x3f946b0)
 #1 0x000055642e804abf llvm::sys::RunSignalHandlers() (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x3f91abf)
 #2 0x000055642e804c15 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f1842469520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x000055642ba48ac0 llvm::SIInstrInfo::fixImplicitOperands(llvm::MachineInstr&) const (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x11d5ac0)
 #5 0x000055642b9a7c1c llvm::GCNSubtarget::mirFileLoaded(llvm::MachineFunction&) const (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x1134c1c)
 #6 0x000055642def0f38 llvm::MIRParserImpl::initializeMachineFunction(llvm::yaml::MachineFunction const&, llvm::MachineFunction&) (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x367df38)
 #7 0x000055642def39b8 llvm::MIRParserImpl::parseMachineFunction(llvm::Module&, llvm::MachineModuleInfo&, llvm::AnalysisManager<llvm::Module>*) (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x36809b8)
 #8 0x000055642def3d34 llvm::MIRParser::parseMachineFunctions(llvm::Module&, llvm::MachineModuleInfo&) (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0x3680d34)
 #9 0x000055642b3b2b1e compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#10 0x000055642b2b6166 main (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0xa43166)
#11 0x00007f1842450d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#12 0x00007f1842450e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#13 0x000055642b3a9955 _start (/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc+0xb36955)
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/FileCheck /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/108173