From 77dc236605aa95a542ea68d7430a9e5ddb30123b Mon Sep 17 00:00:00 2001
From: Hans Wennborg <hans@hanshq.net>
Date: Tue, 20 Jan 2015 19:45:50 +0000
Subject: Implement command line options for stack probe space

This code adds the -mstack-probe-size command line option and implements the /Gs
compiler switch for clang-cl.

This should fix http://llvm.org/bugs/show_bug.cgi?id=21896

Patch by Andrew H!

Differential Revision: http://reviews.llvm.org/D6685

llvm-svn: 226601
---
 clang/lib/Frontend/CompilerInvocation.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'clang/lib/Frontend/CompilerInvocation.cpp')

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 921a0d2..dd1a6061 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -523,6 +523,13 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
     Opts.StackAlignment = StackAlignment;
   }
 
+  if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
+    StringRef Val = A->getValue();
+    unsigned StackProbeSize = Opts.StackProbeSize;
+    Val.getAsInteger(0, StackProbeSize);
+    Opts.StackProbeSize = StackProbeSize;
+  }
+
   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
     StringRef Name = A->getValue();
     unsigned Method = llvm::StringSwitch<unsigned>(Name)
-- 
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