Messages in this thread | | | Date | Thu, 11 Oct 2007 14:55:44 -0500 | From | Scott Wood <> | Subject | Re: [PATCH 2/2] powerpc: Switch to generic WARN_ON()/BUG_ON() |
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On Thu, Oct 11, 2007 at 12:14:13PM -0500, Olof Johansson wrote: > Not using the ppc-specific WARN_ON/BUG_ON constructs actually saves about > 4K text on a ppc64_defconfig. The main reason seems to be that prepping > the arguments to the conditional trap instructions is more work than > just doing a compare and branch.
It'd be nice if we could get GCC to generate bug table entries for __builtin_trap(); that way we could use GCC's ability to put arbitrary conditions in the trap instruction.
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