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Re: [PATCH] Merging BB and user labels (tree level)



On Dec 29, 2004, at 5:12 PM, Jeffrey A Law wrote:


On Wed, 2004-12-29 at 16:35 -0500, Andrew Pinski wrote:
On Dec 29, 2004, at 3:59 PM, Jeffrey A Law wrote:

On Thu, 2004-12-16 at 23:46 -0500, Andrew Pinski wrote:
As much as I'd like to move forward with this patch, I think it is
broken.

Consider an unreferenced user label.

Then why at -O2 I get the labels moved to the beginning of the BB for the following testcase: int i, d = 10, e = 10; int main(void) { L: i++; L1: i+=d; L2: i*=e; }

I don't know offhand.  You've have to analyze why the two testcases
differ in their behavior.

Actually your testcase also does the same thing at -O2. Now at -O1, they both keep the labels at the same spot as the source.

-- Pinski


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