[PATCH] D48069: [cmake] Disable a GCC optimization when building LLVM for MIPS

[Simon Atanasyan via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL359376: [cmake] Disable a GCC optimization when building LLVM for MIPS (authored by atanasyan, committed by ).

Changed prior to commit:
  https://reviews.llvm.org/D48069?vs=150915&id=196956#toc

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D48069/new/

https://reviews.llvm.org/D48069

Files:
  llvm/trunk/cmake/modules/HandleLLVMOptions.cmake


Index: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
===================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
@@ -248,6 +248,11 @@
   else()
     add_flag_or_print_warning("-fPIC" FPIC)
   endif()
+  # GCC for MIPS can miscompile LLVM due to PR37701.
+  if(CMAKE_COMPILER_IS_GNUCXX AND LLVM_NATIVE_ARCH STREQUAL "Mips" AND
+         NOT Uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+    add_flag_or_print_warning("-fno-shrink-wrap" FNO_SHRINK_WRAP)
+  endif()
 endif()
 
 if(NOT WIN32 AND NOT CYGWIN AND NOT (${CMAKE_SYSTEM_NAME} MATCHES "AIX" AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU"))


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