[llvm] [X86] lowerV4F64Shuffle - prefer lowerShuffleAsDecomposedShuffleMerge if we're blending inplace/splatable shuffle inputs on AVX2 targets (PR #126420)

Sun Feb 9 09:32:01 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-a-1` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/12334

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
[235/2775] Copying CXX header __algorithm/for_each_segment.h
[236/2775] Copying CXX header __algorithm/generate.h
[237/2775] Copying CXX header __algorithm/generate_n.h
[238/2775] Generating header stdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdint.yaml
[239/2775] Building CXX object libc/src/stdio/baremetal/CMakeFiles/libc.src.stdio.baremetal.putchar.dir/putchar.cpp.obj
[240/2775] Building CXX object libc/src/stdio/baremetal/CMakeFiles/libc.src.stdio.baremetal.puts.dir/puts.cpp.obj
[241/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memmem.dir/memmem.cpp.obj
[242/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcmp.dir/strcmp.cpp.obj
[243/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncpy.dir/strncpy.cpp.obj
[244/2775] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj
FAILED: libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_21_0_0_git -D__LIBC_USE_FLOAT16_CONVERSION -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -flto -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -std=gnu++17 --target=aarch64-none-elf -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj -MF libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj.d -o libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:16:8: error: unknown type name 'uintptr_t'
   16 | extern uintptr_t __preinit_array_start[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:17:8: error: unknown type name 'uintptr_t'
   17 | extern uintptr_t __preinit_array_end[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:18:8: error: unknown type name 'uintptr_t'
   18 | extern uintptr_t __init_array_start[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:19:8: error: unknown type name 'uintptr_t'
   19 | extern uintptr_t __init_array_end[];
      |        ^
4 errors generated.
[245/2775] Copying CXX header __algorithm/ranges_ends_with.h
[246/2775] Copying CXX header __algorithm/ranges_equal.h
[247/2775] Copying CXX header __algorithm/ranges_equal_range.h
[248/2775] Copying CXX header __algorithm/ranges_fill.h
[249/2775] Copying CXX header __algorithm/ranges_fill_n.h
[250/2775] Copying CXX header __algorithm/ranges_find.h
[251/2775] Copying CXX header __algorithm/ranges_find_end.h
[252/2775] Copying CXX header __algorithm/ranges_find_first_of.h
[253/2775] Copying CXX header __algorithm/ranges_find_if.h
[254/2775] Copying CXX header __algorithm/ranges_find_if_not.h
[255/2775] Copying CXX header __algorithm/ranges_find_last.h
[256/2775] Copying CXX header __algorithm/ranges_fold.h
[257/2775] Copying CXX header __algorithm/ranges_generate.h
[258/2775] Generating header setjmp.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/setjmp.yaml
[259/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncmp.dir/strncmp.cpp.obj
[260/2775] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.fini.dir/fini.cpp.obj
[261/2775] Copying CXX header __algorithm/ranges_for_each.h
[262/2775] Copying CXX header __algorithm/ranges_for_each_n.h
[263/2775] Copying CXX header __algorithm/ranges_generate_n.h
[264/2775] Copying CXX header __algorithm/ranges_includes.h
[265/2775] Copying CXX header __algorithm/ranges_inplace_merge.h
[266/2775] Copying CXX header __algorithm/ranges_is_partitioned.h
[267/2775] Copying CXX header __algorithm/ranges_is_heap.h
[268/2775] Copying CXX header __algorithm/ranges_is_permutation.h
Step 6 (build) failure: build (failure)
...
[235/2775] Copying CXX header __algorithm/for_each_segment.h
[236/2775] Copying CXX header __algorithm/generate.h
[237/2775] Copying CXX header __algorithm/generate_n.h
[238/2775] Generating header stdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdint.yaml
[239/2775] Building CXX object libc/src/stdio/baremetal/CMakeFiles/libc.src.stdio.baremetal.putchar.dir/putchar.cpp.obj
[240/2775] Building CXX object libc/src/stdio/baremetal/CMakeFiles/libc.src.stdio.baremetal.puts.dir/puts.cpp.obj
[241/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memmem.dir/memmem.cpp.obj
[242/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcmp.dir/strcmp.cpp.obj
[243/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncpy.dir/strncpy.cpp.obj
[244/2775] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj
FAILED: libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/bin/clang++ --target=aarch64-none-elf -DLIBC_NAMESPACE=__llvm_libc_21_0_0_git -D__LIBC_USE_FLOAT16_CONVERSION -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/include/aarch64-unknown-none-elf --target=aarch64-none-elf -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" -D_LIBCPP_PRINT=1 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -flto -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-lo5x3a5v/runtimes/runtimes-aarch64-none-elf-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG -std=gnu++17 --target=aarch64-none-elf -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj -MF libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj.d -o libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:16:8: error: unknown type name 'uintptr_t'
   16 | extern uintptr_t __preinit_array_start[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:17:8: error: unknown type name 'uintptr_t'
   17 | extern uintptr_t __preinit_array_end[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:18:8: error: unknown type name 'uintptr_t'
   18 | extern uintptr_t __init_array_start[];
      |        ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/startup/baremetal/init.cpp:19:8: error: unknown type name 'uintptr_t'
   19 | extern uintptr_t __init_array_end[];
      |        ^
4 errors generated.
[245/2775] Copying CXX header __algorithm/ranges_ends_with.h
[246/2775] Copying CXX header __algorithm/ranges_equal.h
[247/2775] Copying CXX header __algorithm/ranges_equal_range.h
[248/2775] Copying CXX header __algorithm/ranges_fill.h
[249/2775] Copying CXX header __algorithm/ranges_fill_n.h
[250/2775] Copying CXX header __algorithm/ranges_find.h
[251/2775] Copying CXX header __algorithm/ranges_find_end.h
[252/2775] Copying CXX header __algorithm/ranges_find_first_of.h
[253/2775] Copying CXX header __algorithm/ranges_find_if.h
[254/2775] Copying CXX header __algorithm/ranges_find_if_not.h
[255/2775] Copying CXX header __algorithm/ranges_find_last.h
[256/2775] Copying CXX header __algorithm/ranges_fold.h
[257/2775] Copying CXX header __algorithm/ranges_generate.h
[258/2775] Generating header setjmp.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/setjmp.yaml
[259/2775] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncmp.dir/strncmp.cpp.obj
[260/2775] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.fini.dir/fini.cpp.obj
[261/2775] Copying CXX header __algorithm/ranges_for_each.h
[262/2775] Copying CXX header __algorithm/ranges_for_each_n.h
[263/2775] Copying CXX header __algorithm/ranges_generate_n.h
[264/2775] Copying CXX header __algorithm/ranges_includes.h
[265/2775] Copying CXX header __algorithm/ranges_inplace_merge.h
[266/2775] Copying CXX header __algorithm/ranges_is_partitioned.h
[267/2775] Copying CXX header __algorithm/ranges_is_heap.h
[268/2775] Copying CXX header __algorithm/ranges_is_permutation.h

```

</details>

https://github.com/llvm/llvm-project/pull/126420