[clang] [Clang] Rework LTO mode selection to be a Toolchain property (PR #201155)

LLVM Continuous Integration via cfe-commits Wed, 03 Jun 2026 07:07:19 -0700

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder 
`amdgpu-offload-ubuntu-22-cmake-build-only` running on `rocm-docker-ubu-22` 
while building `clang` at step 4 "annotate".


Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/203/builds/47980

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (annotate) failure: 
'../llvm-zorg/zorg/buildbot/builders/annotated/amdgpu-offload-cmake.py 
--jobs=32' (failure)
...
[6608/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/FreeBSD.cpp.o
[6609/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/AMDGPU.cpp.o
[6610/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Fuchsia.cpp.o
[6611/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Flang.cpp.o
[6612/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/LFILinux.cpp.o
[6613/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPAMD.cpp.o
[6614/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPSPV.cpp.o
[6615/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPUtility.cpp.o
[6616/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Hurd.cpp.o
[6617/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o
FAILED: 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
ccache /usr/bin/c++ -DCLANG_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS 
-D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE 
-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/clang/lib/Driver
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/clang/include
 -I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/include 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include
 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden 
-Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings 
-Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long 
-Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess 
-Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds 
-Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor 
-Wsuggest-override -Wno-comment -Wno-misleading-indentation 
-Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections 
-fdata-sections -fno-common -Woverloaded-virtual -O3 -DNDEBUG -UNDEBUG 
-fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
-MF 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o.d 
-o tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
-c 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:
 In member function ‘virtual void 
clang::driver::tools::LinkerWrapper::ConstructJob(clang::driver::Compilation&, 
const clang::driver::JobAction&, const clang::driver::InputInfo&, const 
InputInfoList&, const llvm::opt::ArgList&, const char*) const’:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:9832:23:
 error: ‘const class clang::driver::Driver’ has no member named 
‘getOffloadLTOMode’; did you mean ‘enum clang::driver::Driver::OffloadMode’? 
(not accessible from this context)
 9832 |     if (C.getDriver().getOffloadLTOMode() == LTOK_None && 
!UsesProfileGenerate)
      |                       ^~~~~~~~~~~~~~~~~
In file included from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include/clang/Driver/CudaInstallationDetector.h:13,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/MSVC.h:13,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.h:12,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:9:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include/clang/Driver/Driver.h:120:8:
 note: declared private here
  120 |   enum OffloadMode {
      |        ^~~~~~~~~~~
[6618/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Cuda.cpp.o
[6619/8633] Building AMDGPUGenGlobalISel.inc...
[6620/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Managarm.cpp.o
[6621/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/CreateInvocationFromArgs.cpp.o
[6622/8633] Building AMDGPUGenDAGISel.inc...
[6623/8633] Building AMDGPUGenInstrInfo.inc...
[6624/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MipsLinux.cpp.o
[6625/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Hexagon.cpp.o
[6626/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SPIRVOpenMP.cpp.o
[6627/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/TCE.cpp.o
[6628/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MinGW.cpp.o
[6629/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/NetBSD.cpp.o
[6630/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/OpenBSD.cpp.o
[6631/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Serenity.cpp.o
[6632/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Solaris.cpp.o
[6633/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SPIRV.cpp.o
[6634/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SYCL.cpp.o
[6635/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Darwin.cpp.o
[6636/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/UEFI.cpp.o
[6637/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MSVC.cpp.o
[6638/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MSP430.cpp.o
[6639/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Linux.cpp.o
[6640/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/VEToolchain.cpp.o
[6641/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/PS4CPU.cpp.o
[6642/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Gnu.cpp.o
[6643/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HLSL.cpp.o
Step 7 (build cmake config) failure: build cmake config (failure)
...
[6608/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/FreeBSD.cpp.o
[6609/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/AMDGPU.cpp.o
[6610/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Fuchsia.cpp.o
[6611/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Flang.cpp.o
[6612/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/LFILinux.cpp.o
[6613/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPAMD.cpp.o
[6614/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPSPV.cpp.o
[6615/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPUtility.cpp.o
[6616/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Hurd.cpp.o
[6617/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o
FAILED: 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
ccache /usr/bin/c++ -DCLANG_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS 
-D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE 
-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/clang/lib/Driver
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include
 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/clang/include
 -I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/include 
-I/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include
 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden 
-Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings 
-Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long 
-Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess 
-Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds 
-Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor 
-Wsuggest-override -Wno-comment -Wno-misleading-indentation 
-Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections 
-fdata-sections -fno-common -Woverloaded-virtual -O3 -DNDEBUG -UNDEBUG 
-fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
-MF 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o.d 
-o tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Clang.cpp.o 
-c 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:
 In member function ‘virtual void 
clang::driver::tools::LinkerWrapper::ConstructJob(clang::driver::Compilation&, 
const clang::driver::JobAction&, const clang::driver::InputInfo&, const 
InputInfoList&, const llvm::opt::ArgList&, const char*) const’:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:9832:23:
 error: ‘const class clang::driver::Driver’ has no member named 
‘getOffloadLTOMode’; did you mean ‘enum clang::driver::Driver::OffloadMode’? 
(not accessible from this context)
 9832 |     if (C.getDriver().getOffloadLTOMode() == LTOK_None && 
!UsesProfileGenerate)
      |                       ^~~~~~~~~~~~~~~~~
In file included from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include/clang/Driver/CudaInstallationDetector.h:13,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/MSVC.h:13,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.h:12,
                 from 
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/lib/Driver/ToolChains/Clang.cpp:9:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/clang/include/clang/Driver/Driver.h:120:8:
 note: declared private here
  120 |   enum OffloadMode {
      |        ^~~~~~~~~~~
[6618/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Cuda.cpp.o
[6619/8633] Building AMDGPUGenGlobalISel.inc...
[6620/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Managarm.cpp.o
[6621/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/CreateInvocationFromArgs.cpp.o
[6622/8633] Building AMDGPUGenDAGISel.inc...
[6623/8633] Building AMDGPUGenInstrInfo.inc...
[6624/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MipsLinux.cpp.o
[6625/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Hexagon.cpp.o
[6626/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SPIRVOpenMP.cpp.o
[6627/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/TCE.cpp.o
[6628/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MinGW.cpp.o
[6629/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/NetBSD.cpp.o
[6630/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/OpenBSD.cpp.o
[6631/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Serenity.cpp.o
[6632/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Solaris.cpp.o
[6633/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SPIRV.cpp.o
[6634/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/SYCL.cpp.o
[6635/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Darwin.cpp.o
[6636/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/UEFI.cpp.o
[6637/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MSVC.cpp.o
[6638/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/MSP430.cpp.o
[6639/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Linux.cpp.o
[6640/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/VEToolchain.cpp.o
[6641/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/PS4CPU.cpp.o
[6642/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/Gnu.cpp.o
[6643/8633] Building CXX object 
tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HLSL.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/201155
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[clang] [Clang] Rework LTO mode selection to be a Toolchain property (PR #201155)

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