[PS4][clang] Limit ThinLTO parallelism when requested

Pass the correct option to the linker when "-flto-jobs=" is passed to
the driver.

diff --git a/clang/lib/Driver/ToolChains/PS4CPU.cpp b/clang/lib/Driver/ToolChains/PS4CPU.cpp
index b3e1461..8c8b7c7 100644 (file)
--- a/clang/lib/Driver/ToolChains/PS4CPU.cpp
+++ b/clang/lib/Driver/ToolChains/PS4CPU.cpp
@@ -187,6 +187,12 @@ void tools::PScpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
       AddCodeGenFlag(Twine("-crash-diagnostics-dir=") + A->getValue());
   }
 
+  if (IsPS5 && UseLTO) {
+    StringRef Parallelism = getLTOParallelism(Args, D);
+    if (!Parallelism.empty())
+      CmdArgs.push_back(Args.MakeArgString("-plugin-opt=jobs=" + Parallelism));
+  }
+
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
     TC.addSanitizerArgs(Args, CmdArgs, "-l", "");
 

diff --git a/clang/test/Driver/lto-jobs.c b/clang/test/Driver/lto-jobs.c
index c28d0ad..443f8ab 100644 (file)
--- a/clang/test/Driver/lto-jobs.c
+++ b/clang/test/Driver/lto-jobs.c
@@ -3,6 +3,9 @@
 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=thin -flto-jobs=5 2> %t
 // RUN: FileCheck -check-prefix=CHECK-LINK-THIN-JOBS-ACTION < %t %s
 //
+// RUN: %clang -target x86_64-sie-ps5 -### %s -flto=thin -flto-jobs=5 2> %t
+// RUN: FileCheck -check-prefix=CHECK-LINK-THIN-JOBS-ACTION < %t %s
+//
 // CHECK-LINK-THIN-JOBS-ACTION: "-plugin-opt=jobs=5"
 
 // RUN: %clang -target x86_64-apple-darwin13.3.0 -### %s -flto=thin -flto-jobs=5 2> %t