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authorRichard Biener <rguenther@suse.de>2020-10-30 13:32:32 +0100
committerRichard Biener <rguenther@suse.de>2020-10-30 13:35:24 +0100
commit82ff7e3426ea926d090777173977f8bedd086816 (patch)
tree35c9a956bdc58f6e0d758fd31f88133a78f41f16 /gcc/fortran/dump-parse-tree.c
parent33c0f246f799b7403171e97f31276a8feddd05c9 (diff)
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tree-optimization/97623 - avoid excessive insert iteration for hoisting
This avoids requiring insert iteration for back-to-back hoisting opportunities as seen in the added testcase. For the PR at hand this halves the number of insert iterations retaining only the hard to avoid PRE / hoist insert back-to-backs. 2020-10-30 Richard Biener <rguenther@suse.de> PR tree-optimization/97623 * tree-ssa-pre.c (insert): First do hoist insertion in a backward walk. * gcc.dg/tree-ssa/ssa-hoist-7.c: New testcase.
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