diff options
| author | Daniel Dunbar <daniel@zuster.org> | 2011-02-04 02:20:39 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2011-02-04 02:20:39 +0000 |
| commit | 398c610b16728b4398214367dd0effd9d2e61340 (patch) | |
| tree | 3cc26d29a7ff8038c3775b18de359d132b3c3628 | |
| parent | f24fe4d1f1828251bcd160244a2393f2e990f1aa (diff) | |
build: Add support for DISABLE_DEFAULT_STRICT_ALIASING, which does what one
might expect.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124848 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/clang/Driver/ToolChain.h | 6 | ||||
| -rw-r--r-- | lib/Driver/ToolChains.h | 7 | ||||
| -rw-r--r-- | lib/Driver/Tools.cpp | 6 |
3 files changed, 15 insertions, 4 deletions
diff --git a/include/clang/Driver/ToolChain.h b/include/clang/Driver/ToolChain.h index dfd39bc594..f0012bd851 100644 --- a/include/clang/Driver/ToolChain.h +++ b/include/clang/Driver/ToolChain.h @@ -108,11 +108,15 @@ public: /// IsBlocksDefault - Does this tool chain enable -fblocks by default. virtual bool IsBlocksDefault() const { return false; } - + /// IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as /// by default. virtual bool IsIntegratedAssemblerDefault() const { return false; } + /// IsStrictAliasingDefault - Does this tool chain use -fstrict-aliasing by + /// default. + virtual bool IsStrictAliasingDefault() const { return true; } + /// IsObjCDefaultSynthPropertiesDefault - Does this tool chain enable /// -fobjc-default-synthesize-properties by default. virtual bool IsObjCDefaultSynthPropertiesDefault() const { return false; } diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h index 005597dccc..870621268e 100644 --- a/lib/Driver/ToolChains.h +++ b/lib/Driver/ToolChains.h @@ -176,6 +176,13 @@ public: getTriple().getArch() == llvm::Triple::x86_64); #endif } + virtual bool IsStrictAliasingDefault() const { +#ifdef DISABLE_DEFAULT_STRICT_ALIASING + return false; +#else + return ToolChain::IsStrictAliasingDefault(); +#endif + } virtual bool IsObjCDefaultSynthPropertiesDefault() const { // Always allow default synthesized properties on Darwin. diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index d1d8873c3a..f3d2d4b88b 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -1007,9 +1007,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss, options::OPT_fno_zero_initialized_in_bss)) CmdArgs.push_back("-mno-zero-initialized-in-bss"); - if (Args.hasFlag(options::OPT_fno_strict_aliasing, - options::OPT_fstrict_aliasing, - false)) + if (!Args.hasFlag(options::OPT_fstrict_aliasing, + options::OPT_fno_strict_aliasing, + getToolChain().IsStrictAliasingDefault())) CmdArgs.push_back("-relaxed-aliasing"); // Decide whether to use verbose asm. Verbose assembly is the default on |