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...-- it calls TargetLibraryInfo::disableAllFunctions, whose effect is not preserved across "clang -fno-builtin -emit-llvm | opt", nor across LTO. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130516/cf7faa57/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: builtin-nobuiltin.diff Type: application/octet-stream Size: 13412 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130516/cf7faa57/attachment.obj>

On May 15, 2013, at 10:32 PM, Richard Smith <richard at metafoo.co.uk> wrote: >>> Initially, I'm just concerned about keeping the optimizations we already perform, such as globalopt lowering a new/delete pair into a global, while disabling the non-conforming variations of those optimizations. But we're also permitted to merge multiple allocations into one if they have