[PATCH] D43106: [RISCV] Force enable int128 for compiling long double routines

[Mandeep Singh Grang via Phabricator via llvm-commits]

mgrang updated this revision to Diff 135940.
mgrang retitled this revision from "[RISCV] Enable -fforce-enable-int128 through cmake flag COMPILER_RT_HAS_FINT128_FLAG" to "[RISCV] Force enable int128 for compiling long double routines".
mgrang edited the summary of this revision.

Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D43106

Files:
  lib/builtins/CMakeLists.txt


Index: lib/builtins/CMakeLists.txt
===================================================================
--- lib/builtins/CMakeLists.txt
+++ lib/builtins/CMakeLists.txt
@@ -546,6 +546,12 @@
         list(APPEND BUILTIN_CFLAGS -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET)
       endif()
 
+      # For RISCV32, we must force enable int128 for compiling long
+      # double routines.
+      if("${arch}" STREQUAL "riscv32")
+        list(APPEND BUILTIN_CFLAGS -fforce-enable-int128)
+      endif()
+
       add_compiler_rt_runtime(clang_rt.builtins
                               STATIC
                               ARCHS ${arch}


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