Thread (1 message) 1 message, 1 author, 2012-08-14

Re: [PATCH 2/8] opensm/complib: define "if" statements with branch prediction hints

From: Jason Gunthorpe <hidden>
Date: 2012-08-14 21:54:13

On Tue, Aug 14, 2012 at 09:39:23PM +0000, Hefty, Sean wrote:
quoted
+#define if_PF(cond)		if(CL_PREDICT_FALSE(cond))
+#define if_PT(cond)		if(CL_PREDICT_TRUE(cond))
If CL_PREDICT_TRUE/FALSE are too long, why not just shorten those,
rather than abstract if statements behind a macro?
If you are typing these so often (ie more than in some datastructure
kernels) that the length is a problem then you really should be using
profile guided optimization instead...

Jason
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