[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 `llvm-clang-x86_64-gcc-ubuntu` running on `sie-linux-worker3` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/4962

<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/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o -  /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o - /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/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/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc -mtriple=amdgcn -mcpu=gfx1200 -verify-machineinstrs -run-pass si-wqm -o - /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir
 #0 0x000055a45a7f206f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0x3f5006f)
 #1 0x000055a45a7ef5a4 SignalHandler(int) Signals.cpp:0:0
 #2 0x00007fe293d5f420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #3 0x000055a457ab7f70 llvm::SIInstrInfo::fixImplicitOperands(llvm::MachineInstr&) const crtstuff.c:0:0
 #4 0x000055a457a16969 llvm::GCNSubtarget::mirFileLoaded(llvm::MachineFunction&) const crtstuff.c:0:0
 #5 0x000055a459eeaceb llvm::MIRParserImpl::initializeMachineFunction(llvm::yaml::MachineFunction const&, llvm::MachineFunction&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0x3648ceb)
 #6 0x000055a459eed5cb llvm::MIRParserImpl::parseMachineFunction(llvm::Module&, llvm::MachineModuleInfo&, llvm::AnalysisManager<llvm::Module>*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0x364b5cb)
 #7 0x000055a459eed8d4 llvm::MIRParser::parseMachineFunctions(llvm::Module&, llvm::MachineModuleInfo&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0x364b8d4)
 #8 0x000055a45742fcc1 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
 #9 0x000055a45732c1a6 main (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0xa8a1a6)
#10 0x00007fe29380d083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3
#11 0x000055a45742694e _start (/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llc+0xb8494e)
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/CodeGen/AMDGPU/si-init-whole-wave.mir

--

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


```

</details>

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