On Tue, Oct 23, 2012 at 10:29 PM, Christophe Lyon <christophe.l...@linaro.org> wrote: > Well, both of these functions appear to check that the 2 blocks to > merge belong to the same partition, so it should be OK.
In your first email, you said if-convert was merging two blocks from different partitions. can_merge_block_p() would rejected merging the two blocks, so merge_blocks shouldn't be called on them. IIRC cfghooks.c:merge_blocks() used to have a gcc_assert(can_merge_blocks(a,b)) but it's not there now. But if can_merge_blocks() returns false, merge_blocks should fail. Your bug is that merge_blocks is being called at all on those blocks from different partitions. > But not all calls to merge_blocks are guarded by if > (can_merge_block_p()), this is probably where the problem is? Not sure. Depends on what blocks get merged. It may be that if-conversion shouldn't even be attempting whatever transformation it's attempting. Not enough information. Ciao! Steven
