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| author | Richard Biener <rguenther@suse.de> | 2021-01-27 15:35:52 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-01-28 09:14:46 +0100 |
| commit | a523add327c6cfdd68cf9b788ea808068d0f508c (patch) | |
| tree | 70405368b4b570d343d2a1b5b041beb8a3fd7ad3 /gcc/tree-ssa-loop-niter.c | |
| parent | fbe37371cf372b84d5b7f1a6f5f0971a513dd5fa (diff) | |
| download | gcc-a523add327c6cfdd68cf9b788ea808068d0f508c.zip gcc-a523add327c6cfdd68cf9b788ea808068d0f508c.tar.gz gcc-a523add327c6cfdd68cf9b788ea808068d0f508c.tar.bz2 | |
rtl-optimization/80960 - avoid creating garbage RTL in DSE
The following avoids repeatedly turning VALUE RTXen into
sth useful and re-applying a constant offset through get_addr
via DSE check_mem_read_rtx. Instead perform this once for
all stores to be visited in check_mem_read_rtx. This avoids
allocating 1.6GB of garbage PLUS RTXen on the PR80960
testcase, fixing the memory usage regression from old GCC.
2021-01-27 Richard Biener <rguenther@suse.de>
PR rtl-optimization/80960
* dse.c (check_mem_read_rtx): Call get_addr on the
offsetted address.
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
0 files changed, 0 insertions, 0 deletions