On Jul 10, 2013, at 11:18 AM, Eli Bendersky <[email protected]> wrote: > 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.
Then handle it in the driver. John.
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