Record function attribute "stackrealign" instead of using backend option

-force-align-stack.

Also, make changes to the driver so that -mno-stack-realign is no longer
an option exposed to the end-user that disallows stack realignment in
the backend.

Differential Revision: http://reviews.llvm.org/D11815

llvm-svn: 247451

1 files changed, 1 insertions, 7 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index b83f3fa..1a3a22d 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -4326,14 +4326,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
 
   // Translate -mstackrealign
   if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
-                   false)) {
-    CmdArgs.push_back("-backend-option");
-    CmdArgs.push_back("-force-align-stack");
-  }
-  if (!Args.hasFlag(options::OPT_mno_stackrealign, options::OPT_mstackrealign,
-                    false)) {
+                   false))
     CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
-  }
 
   if (Args.hasArg(options::OPT_mstack_alignment)) {
     StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);