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ggml-cpu: Conditionally enable power11 backend based on compiler support (llama/24687) 

* ggml: Conditionally enable power11 backend based on compiler support

Guard POWER11 backend creation behind a compiler flag check for -mcpu=power11. This avoids build failures on current GCC/Clang toolchains while preserving forward compatibility once POWER11 support becomes available.

* Update CMakeLists.txt

ggml-cpu: Use -mcpu=power10 for P10 and P11
This commit is contained in:
shalinib-ibm 2026-06-18 00:15:19 +05:30 committed by Georgi Gerganov
parent d911569230
commit 6aff09ac48
2 changed files with 9 additions and 2 deletions
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9
ggml/src/CMakeLists.txt
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@ -438,7 +438,14 @@ if (GGML_CPU_ALL_VARIANTS)
ggml_add_cpu_backend_variant(power8_2 POWER8 VSX)
ggml_add_cpu_backend_variant(power9 POWER9 VSX)
ggml_add_cpu_backend_variant(power10 POWER10 VSX)
ggml_add_cpu_backend_variant(power11 POWER11 VSX)
# POWER11 backend: only if compiler supports -mcpu=power11
check_cxx_compiler_flag("-mcpu=power11" GGML_CXX_SUPPORTS_POWER11)
if (GGML_CXX_SUPPORTS_POWER11)
message(STATUS "Compiler supports -mcpu=power11, enabling POWER11 backend")
ggml_add_cpu_backend_variant(power11 POWER11 VSX)
else()
message(STATUS "Skipping POWER11 backend: compiler does not support -mcpu=power11")
endif()
else()
message(FATAL_ERROR "Unsupported PowerPC target OS: ${CMAKE_SYSTEM_NAME}")
endif()

2
ggml/src/ggml-cpu/CMakeLists.txt
View File

@ -389,7 +389,7 @@ function(ggml_add_cpu_backend_variant_impl tag_name)
string(REGEX MATCHALL "POWER *([0-9]+)" MATCHED_STRING "${POWER10_M_UPPER}")
string(REGEX REPLACE "POWER *([0-9]+)" "\\1" EXTRACTED_NUMBER "${MATCHED_STRING}")
if (EXTRACTED_NUMBER GREATER_EQUAL 10)
if (EXTRACTED_NUMBER EQUAL 10 OR EXTRACTED_NUMBER EQUAL 11)
list(APPEND ARCH_FLAGS -mcpu=power10)
elseif (EXTRACTED_NUMBER EQUAL 9)
list(APPEND ARCH_FLAGS -mcpu=power9)