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Hi, This patch supports compare iv_use for comparison whose both sides are IVs. With this patch, optimal code is generated for PR53090. Is it OK? Thanks, bin 2017-04-11 Bin Cheng <bin.cheng@arm.com> PR tree-optimization/53090 * tree-ssa-loop-ivopts.c (enum comp_iv_rewrite): New enum value COMP_IV_EXPR_2. (extract_cond_operands): Detect condition with IV on both sides and return COMP_IV_EXPR_2. (find_interesting_uses_cond): Add iv_use for both IVs in condition. (rewrite_use_compare): Simplify by removing call to function extract_cond_operands.
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0021-iv-comparing-against-another-iv-20170313.txt
Description: 0021-iv-comparing-against-another-iv-20170313.txt
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