Enabling new pass manager in LTO (and thinLTO) link step.
Passes 'new-pass-manager' option to the linker plugin when the new pass
manager is enabled.
Patch by Graham Yiu.
Differential Revision: https://reviews.llvm.org/D38517
llvm-svn: 314964
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index d052bb2..4020059 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -454,6 +454,14 @@
CmdArgs.push_back(
Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
}
+
+ // Need this flag to turn on new pass manager via Gold plugin.
+ if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
+ options::OPT_fno_experimental_new_pass_manager,
+ /* Default */ false)) {
+ CmdArgs.push_back("-plugin-opt=new-pass-manager");
+ }
+
}
void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
diff --git a/clang/test/Driver/gold-lto-new-pass-man.c b/clang/test/Driver/gold-lto-new-pass-man.c
new file mode 100644
index 0000000..c2add0c
--- /dev/null
+++ b/clang/test/Driver/gold-lto-new-pass-man.c
@@ -0,0 +1,7 @@
+// RUN: touch %t.o
+//
+// RUN: %clang -target ppc64le-unknown-linux -### %t.o -flto 2>&1 \
+// RUN: -Wl,-plugin-opt=foo -O3 \
+// RUN: -fexperimental-new-pass-manager \
+// RUN: | FileCheck %s
+// CHECK: "-plugin-opt=new-pass-manager"