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[PATCH GCC][5/6]Record initialization statements and only insert it for valid chains

From: Bin Cheng <Bin dot Cheng at arm dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: nd <nd at arm dot com>
Date: Fri, 12 May 2017 11:28:29 +0000
Subject: [PATCH GCC][5/6]Record initialization statements and only insert it for valid chains
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Hi,
This patch caches initialization statements and only inserts it for valid chains.
Looks like current code even inserts such stmts for invalid chains which will be
deleted as dead code afterwards.

Bootstrap and test on x86_64 and AArch64, is it OK?

Thanks,
bin
2017-05-10  Bin Cheng  <bin.cheng@arm.com>

	* tree-predcom.c (struct chain): New field init_seq.
	(prepare_initializers_chain): Record intialization stmts in above
	field.  Discard it if chain is invalid.
	(insert_init_seqs): New function.
	(tree_predictive_commoning_loop): Call insert_init_seqs.

Attachment: 0005-chain-init-seq-20170102.txt
Description: 0005-chain-init-seq-20170102.txt

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