[libc-commits] [libc] 4e9ac30 - [reland][libc][NFC] Add -fno-lax-vector-conversions compilation flag

[Guillaume Chatelet via libc-commits]

Author: Guillaume Chatelet
Date: 2022-12-27T10:32:41Z
New Revision: 4e9ac3081651dd91b9e93e4a6da070896791b45f

URL: https://github.com/llvm/llvm-project/commit/4e9ac3081651dd91b9e93e4a6da070896791b45f
DIFF: https://github.com/llvm/llvm-project/commit/4e9ac3081651dd91b9e93e4a6da070896791b45f.diff

LOG: [reland][libc][NFC] Add -fno-lax-vector-conversions compilation flag

Now that a3d2c344773cc4fc95136fd67245880b34d8e335 has been submitted.

Added: 
    

Modified: 
    libc/cmake/modules/LLVMLibCObjectRules.cmake
    utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl

Removed: 
    


################################################################################
diff  --git a/libc/cmake/modules/LLVMLibCObjectRules.cmake b/libc/cmake/modules/LLVMLibCObjectRules.cmake
index 3502bcf022fa4..35c016df63654 100644
--- a/libc/cmake/modules/LLVMLibCObjectRules.cmake
+++ b/libc/cmake/modules/LLVMLibCObjectRules.cmake
@@ -23,6 +23,7 @@ function(_get_common_compile_options output_var flags)
     list(APPEND compile_options "-ffreestanding")
     list(APPEND compile_options "-fno-builtin")
     list(APPEND compile_options "-fno-exceptions")
+    list(APPEND compile_options "-fno-lax-vector-conversions")
     list(APPEND compile_options "-fno-unwind-tables")
     list(APPEND compile_options "-fno-asynchronous-unwind-tables")
     list(APPEND compile_options "-fno-rtti")

diff  --git a/utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl b/utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl
index 6a4c1a56d27f7..7b5e9a1a4c6dd 100644
--- a/utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl
+++ b/utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl
@@ -69,6 +69,7 @@ def libc_function(
     copts = copts or []
     copts.append("-O3")
     copts.append("-fno-builtin")
+    copts.append("-fno-lax-vector-conversions")
 
     # We compile the code twice, the first target is suffixed with ".__internal__" and contains the
     # C++ functions in the "__llvm_libc" namespace. This allows us to test the function in the