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Previously, when clang reports an error when -fno-split-machine-functions is
used for non-X86 archs.
However, in some cases, users may specify flags as "-fsplit-machine-functions
-fother-flags -fno-split-machine-functions", the first one is from a global
flag set, the last one is used to negate the global flag, we think this is a
valid usage mode.
Another cases is when clang is used to invoke multiple workloads, like "-x cuda
-fsplit-machine-functions -Xarch_device -fno-split-machine-functions", the
latter is used to negate the global -fsplit-machine-functions when invoke
workloads for GPU."
This change makes this work.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D158755
Files:
clang/lib/Driver/ToolChains/Clang.cpp
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -5872,13 +5872,13 @@
if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
options::OPT_fno_split_machine_functions)) {
- // This codegen pass is only available on x86-elf targets.
- if (Triple.isX86() && Triple.isOSBinFormatELF()) {
- if (A->getOption().matches(options::OPT_fsplit_machine_functions))
+ if (!A->getOption().matches(options::OPT_fno_split_machine_functions)) {
+ // This codegen pass is only available on x86-elf targets.
+ if (Triple.isX86() && Triple.isOSBinFormatELF())
A->render(Args, CmdArgs);
- } else {
- D.Diag(diag::err_drv_unsupported_opt_for_target)
- << A->getAsString(Args) << TripleStr;
+ else
+ D.Diag(diag::err_drv_unsupported_opt_for_target)
+ << A->getAsString(Args) << TripleStr;
}
}
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -5872,13 +5872,13 @@
if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
options::OPT_fno_split_machine_functions)) {
- // This codegen pass is only available on x86-elf targets.
- if (Triple.isX86() && Triple.isOSBinFormatELF()) {
- if (A->getOption().matches(options::OPT_fsplit_machine_functions))
+ if (!A->getOption().matches(options::OPT_fno_split_machine_functions)) {
+ // This codegen pass is only available on x86-elf targets.
+ if (Triple.isX86() && Triple.isOSBinFormatELF())
A->render(Args, CmdArgs);
- } else {
- D.Diag(diag::err_drv_unsupported_opt_for_target)
- << A->getAsString(Args) << TripleStr;
+ else
+ D.Diag(diag::err_drv_unsupported_opt_for_target)
+ << A->getAsString(Args) << TripleStr;
}
}
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