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| author | Vladimir Makarov <vmakarov@redhat.com> | 2019-11-29 22:04:21 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2019-11-29 22:04:21 +0000 |
| commit | 12981e9be2443e5529c2de4bddd731e0fdc5e075 (patch) | |
| tree | 2be30cfa92303d42cc397f843394f03ec808bd5f /gcc/lra.c | |
| parent | d005f61e7a0dbb2c991f13b4b61b1a27ca2d8b73 (diff) | |
| download | gcc-12981e9be2443e5529c2de4bddd731e0fdc5e075.zip gcc-12981e9be2443e5529c2de4bddd731e0fdc5e075.tar.gz gcc-12981e9be2443e5529c2de4bddd731e0fdc5e075.tar.bz2 | |
re PR rtl-optimization/92283 (454.calculix miscomparison since r276645 with -O2 -march=znver2)
2019-11-29 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/92283
* lra.c (lra): Update reg notes after inheritance sub-pass and
before constraint sub-pass.
From-SVN: r278865
Diffstat (limited to 'gcc/lra.c')
| -rw-r--r-- | gcc/lra.c | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -2473,7 +2473,7 @@ lra (FILE *f) But don't remove dead insns or change global live info as we can undo inheritance transformations after inheritance pseudo assigning. */ - lra_create_live_ranges (true, false); + lra_create_live_ranges (true, !lra_simple_p); live_p = true; /* If we don't spill non-reload and non-inheritance pseudos, there is no sense to run memory-memory move @@ -2514,6 +2514,11 @@ lra (FILE *f) } } while (fails_p); + if (! live_p) { + /* We need the correct reg notes for work of constraint sub-pass. */ + lra_create_live_ranges (true, true); + live_p = true; + } } /* Don't clear optional reloads bitmap until all constraints are satisfied as we need to differ them from regular reloads. */ |