[llvm] [RegAlloc] Remove default restriction on non-trivial rematerialization (PR #159211)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux-fast` running on `sanitizer-buildbot3` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/169/builds/15646

<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-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/main.py:74: 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: 92405 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 
FAIL: lld :: MachO/read-workers.s (9965 of 92405)
******************** TEST 'lld :: MachO/read-workers.s' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=x86_64-apple-darwin /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/read-workers.s -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=x86_64-apple-darwin /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/read-workers.s -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o
# note: command had no output on stdout or stderr
# RUN: at line 5
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=0 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=0 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# note: command had no output on stdout or stderr
# RUN: at line 6
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=1 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=1 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# note: command had no output on stdout or stderr
# RUN: at line 7
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=2 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=2 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# |  #0 0x00005559961af436 ___interceptor_backtrace /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:4530:13
# |  #1 0x00005559964424e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:834:13
# |  #2 0x000055599643bc89 llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Signals.cpp:0:5
# |  #3 0x00005559964445ee SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:426:38
# |  #4 0x00007fc8d0e458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #5 0x00007fc8d0ea49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #6 0x00007fc8d0e4579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #7 0x00007fc8d0e288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# |  #8 0x000055599623211c (/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld+0xc82a11c)
# |  #9 0x000055599622ffbe __sanitizer::Die() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #10 0x0000555996210c1b push_back /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common.h:543:7
# | #11 0x0000555996210c1b __asan::ScopedInErrorReport::~ScopedInErrorReport() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_report.cpp:193:29
# | #12 0x0000555996212aad __asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_report.cpp:536:1
# | #13 0x0000555996213676 __asan_report_load1 /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_rtl.cpp:128:1
# | #14 0x0000555997051f06 operator() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/MachO/Driver.cpp:352:5
# | #15 0x0000555997051f06 operator() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/MachO/Driver.cpp:372:11
Step 10 (stage2/asan_ubsan check) failure: stage2/asan_ubsan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using lld-link: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:530: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/utils/lit/lit/main.py:74: 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: 92405 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 
FAIL: lld :: MachO/read-workers.s (9965 of 92405)
******************** TEST 'lld :: MachO/read-workers.s' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=x86_64-apple-darwin /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/read-workers.s -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o
# executed command: /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=x86_64-apple-darwin /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/read-workers.s -o /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o
# note: command had no output on stdout or stderr
# RUN: at line 5
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=0 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=0 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# note: command had no output on stdout or stderr
# RUN: at line 6
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=1 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=1 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# note: command had no output on stdout or stderr
# RUN: at line 7
ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=2 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# executed command: ld64.lld -arch x86_64 -platform_version macos 11.0 11.0 -syslibroot /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/MachO/Inputs/MacOSX.sdk -lSystem -fatal_warnings --read-workers=2 /home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/MachO/Output/read-workers.s.tmp.o -o /dev/null
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# |  #0 0x00005559961af436 ___interceptor_backtrace /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:4530:13
# |  #1 0x00005559964424e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:834:13
# |  #2 0x000055599643bc89 llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Signals.cpp:0:5
# |  #3 0x00005559964445ee SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:426:38
# |  #4 0x00007fc8d0e458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #5 0x00007fc8d0ea49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #6 0x00007fc8d0e4579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #7 0x00007fc8d0e288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# |  #8 0x000055599623211c (/home/b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/lld+0xc82a11c)
# |  #9 0x000055599622ffbe __sanitizer::Die() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #10 0x0000555996210c1b push_back /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common.h:543:7
# | #11 0x0000555996210c1b __asan::ScopedInErrorReport::~ScopedInErrorReport() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_report.cpp:193:29
# | #12 0x0000555996212aad __asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool) /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_report.cpp:536:1
# | #13 0x0000555996213676 __asan_report_load1 /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/compiler-rt/lib/asan/asan_rtl.cpp:128:1
# | #14 0x0000555997051f06 operator() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/MachO/Driver.cpp:352:5
# | #15 0x0000555997051f06 operator() /home/b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/MachO/Driver.cpp:372:11

```

</details>

https://github.com/llvm/llvm-project/pull/159211