[llvm] a7579fd - [PowerPC][AIX] Remove flag for no semantic interposition (#168109)

[via llvm-commits]

Author: Lei Huang
Date: 2025-11-17T12:51:04-05:00
New Revision: a7579fda53b55ae7d7d064d08e58b1269420095d

URL: https://github.com/llvm/llvm-project/commit/a7579fda53b55ae7d7d064d08e58b1269420095d
DIFF: https://github.com/llvm/llvm-project/commit/a7579fda53b55ae7d7d064d08e58b1269420095d.diff

LOG: [PowerPC][AIX] Remove flag for no semantic interposition (#168109)

Remove flag to sepecifcy "no semantic interposition" since this is the
default for AIX.

Added: 
    

Modified: 
    llvm/cmake/modules/HandleLLVMOptions.cmake

Removed: 
    


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diff  --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index 22ecf4dcee368..fdd3509f03f59 100644
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -450,13 +450,16 @@ if( LLVM_ENABLE_PIC )
     # Enable interprocedural optimizations for non-inline functions which would
     # otherwise be disabled due to GCC -fPIC's default.
     # Note: GCC<10.3 has a bug on SystemZ.
-    #
+    # Note: Default on AIX is "no semantic interposition".
     # Note: Clang allows IPO for -fPIC so this optimization is less effective.
     # Clang 13 has a bug related to -fsanitize-coverage
     # -fno-semantic-interposition (https://reviews.llvm.org/D117183).
-    if ((CMAKE_COMPILER_IS_GNUCXX AND
-         NOT (LLVM_NATIVE_ARCH STREQUAL "SystemZ" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.3))
-       OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 14))
+    if ((NOT ("${CMAKE_SYSTEM_NAME}" MATCHES "AIX"))
+        AND ((CMAKE_COMPILER_IS_GNUCXX AND
+              NOT (LLVM_NATIVE_ARCH STREQUAL "SystemZ"
+                   AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.3))
+             OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"
+                 AND CMAKE_CXX_COMPILER_VERSION GREATER_EQUAL 14)))
       add_flag_if_supported("-fno-semantic-interposition" FNO_SEMANTIC_INTERPOSITION)
     endif()
   endif()