On Wed, Jul 10, 2013 at 3:03 AM, John McCall <[email protected]> wrote:
> On Jun 27, 2013, at 3:57 PM, Eli Bendersky <[email protected]> wrote: > > Without fmath-errno, Clang currently generates calls to @llvm.pow.* > intrinsics when it sees pow*(). This may not be suitable for all targets > (for example PNaCl), so the attached patch adds a target hook that CodeGen > queries. The target can state its preference for having or not having the > intrinsic generated. Non-PNaCl behavior remains unchanged; PNaCl-specific > test added. > > Isn't a more straightforward and less invasive approach to just invoke the > compiler with -fno-builtin=pow or something along those lines? > We don't control the flags users supply to Clang though. Eli
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