[PS5][Driver] Ensure stack sizes are emitted by LTO (#100592)

... when requested.

Upstreaming a private patch.

SIE tracker: TOOLCHAIN-16575

Author: playstation-edd

clang/lib/Driver/ToolChains/PS4CPU.cpp

@@ -266,6 +266,10 @@ void tools::PS5cpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (UseJMC)
     AddLTOFlag("-enable-jmc-instrument");
 
+  if (Args.hasFlag(options::OPT_fstack_size_section,
+                   options::OPT_fno_stack_size_section, false))
+    AddLTOFlag("-stack-size-section");
+
   if (Arg *A = Args.getLastArg(options::OPT_fcrash_diagnostics_dir))
     AddLTOFlag(Twine("-crash-diagnostics-dir=") + A->getValue());
 

clang/test/Driver/stack-size-section.c

@@ -14,6 +14,7 @@
 
 // RUN: %clang -### --target=x86_64-linux-gnu -flto -fstack-size-section %s 2>&1 | FileCheck %s --check-prefix=LTO
 // RUN: %clang -### --target=x86_64-linux-gnu -flto -fstack-size-section -fno-stack-size-section %s 2>&1 | FileCheck %s --check-prefix=LTO-NO
+// RUN: %clang -### --target=x86_64-sie-ps5 -fstack-size-section %s 2>&1 | FileCheck %s --check-prefix=LTO
 
 // LTO: "-plugin-opt=-stack-size-section"
 // LTO-NO-NOT: "-plugin-opt=-stack-size-section"