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The LTO config allows us to set whether or not the build is
freestanding. This pretty much prevents emission of library calls and
should cause them to be treated like normal functions. This is in
relation to D154364 <https://reviews.llvm.org/D154364>.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D154378
Files:
clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
Index: clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
===================================================================
--- clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -570,6 +570,10 @@
Conf.CGFileType =
(Triple.isNVPTX() || SaveTemps) ? CGFT_AssemblyFile : CGFT_ObjectFile;
+ // We consider the GPU to be a freestanding target so we shouldn't emit any
+ // builtin library calls.
+ Conf.Freestanding = true;
+
// TODO: Handle remark files
Conf.HasWholeProgramVisibility = Args.hasArg(OPT_whole_program);
Index: clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
===================================================================
--- clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -570,6 +570,10 @@
Conf.CGFileType =
(Triple.isNVPTX() || SaveTemps) ? CGFT_AssemblyFile : CGFT_ObjectFile;
+ // We consider the GPU to be a freestanding target so we shouldn't emit any
+ // builtin library calls.
+ Conf.Freestanding = true;
+
// TODO: Handle remark files
Conf.HasWholeProgramVisibility = Args.hasArg(OPT_whole_program);
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