Move LLVM_ENABLE_ABI_BREAKING_CHECKS variables to their own file
so that you don't have to link Error.o and all of its dependencies.
In more detail: global initializers in Error.o can't be elided with
-ffunction-sections/-gc-sections since they always need to be run
causing a fairly significant binary bloat if all you want is the
ABI breaking checks code.
Differential Revision: https://reviews.llvm.org/D67387
llvm-svn: 371561
diff --git a/llvm/lib/Support/ABIBreak.cpp b/llvm/lib/Support/ABIBreak.cpp
new file mode 100644
index 0000000..247b635
--- /dev/null
+++ b/llvm/lib/Support/ABIBreak.cpp
@@ -0,0 +1,24 @@
+//===----- lib/Support/ABIBreak.cpp - EnableABIBreakingChecks -------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Config/abi-breaking.h"
+
+#ifndef _MSC_VER
+namespace llvm {
+
+// One of these two variables will be referenced by a symbol defined in
+// llvm-config.h. We provide a link-time (or load time for DSO) failure when
+// there is a mismatch in the build configuration of the API client and LLVM.
+#if LLVM_ENABLE_ABI_BREAKING_CHECKS
+int EnableABIBreakingChecks;
+#else
+int DisableABIBreakingChecks;
+#endif
+
+} // end namespace llvm
+#endif
diff --git a/llvm/lib/Support/CMakeLists.txt b/llvm/lib/Support/CMakeLists.txt
index 013e6e6..29d99ff 100644
--- a/llvm/lib/Support/CMakeLists.txt
+++ b/llvm/lib/Support/CMakeLists.txt
@@ -53,6 +53,7 @@
add_llvm_library(LLVMSupport
AArch64TargetParser.cpp
+ ABIBreak.cpp
ARMTargetParser.cpp
AMDGPUMetadata.cpp
APFloat.cpp
diff --git a/llvm/lib/Support/Error.cpp b/llvm/lib/Support/Error.cpp
index ae0e4b0..9ea08c3 100644
--- a/llvm/lib/Support/Error.cpp
+++ b/llvm/lib/Support/Error.cpp
@@ -167,18 +167,3 @@
LLVMErrorTypeId LLVMGetStringErrorTypeId() {
return reinterpret_cast<void *>(&StringError::ID);
}
-
-#ifndef _MSC_VER
-namespace llvm {
-
-// One of these two variables will be referenced by a symbol defined in
-// llvm-config.h. We provide a link-time (or load time for DSO) failure when
-// there is a mismatch in the build configuration of the API client and LLVM.
-#if LLVM_ENABLE_ABI_BREAKING_CHECKS
-int EnableABIBreakingChecks;
-#else
-int DisableABIBreakingChecks;
-#endif
-
-} // end namespace llvm
-#endif