From f4d3f7a0b9dc5a7bbb3e33cc0088c3404e69326b Mon Sep 17 00:00:00 2001 From: Nick Lewycky Date: Tue, 6 Dec 2011 03:33:03 +0000 Subject: Stack realignment is a tristate. Add -mno-stackrealign to turn off all stack realignment, even with locals with alignment exceeding the ABI guarantee. llvm-svn: 145909 --- clang/lib/Driver/Tools.cpp | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'clang/lib/Driver/Tools.cpp') diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp index 074be43fdb4..4987b0a81f0 100644 --- a/clang/lib/Driver/Tools.cpp +++ b/clang/lib/Driver/Tools.cpp @@ -1796,8 +1796,17 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel))); } - if (Args.hasArg(options::OPT_mstackrealign)) - CmdArgs.push_back("-mstackrealign"); + // 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)) { + CmdArgs.push_back(Args.MakeArgString("-mstackrealign")); + } + if (Args.hasArg(options::OPT_mstack_alignment)) { StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment); CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment)); -- cgit v1.2.3