Hi,
On Sat, Sep 7, 2013 at 2:08 AM, Weiming Zhao <[email protected]>wrote: > Hi Eli,**** > > ** ** > > I didn’t find much info about atomics for targets. I find two attributes > are relevant: MaxAtomicPromoteWidth and MaxAtomicInlineWidth, but they > cannot be used to compute the macros.**** > > Besides, even for the same target, the macros are dependent on CPU types. > For example, for X86 target:**** > > if (CPU >= CK_i486) {**** > > Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");**** > > Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");**** > > Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");**** > > }**** > > if (CPU >= CK_i586)**** > > Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");**** > > }**** > > > How about adding these macros for only ARMv7 and up? Without this patch std::thread just fails on ARM so it would be rather nice to have this fixed in clang 3.4 release. Regards.
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