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| author | Vladimir N. Makarov <vmakarov@redhat.com> | 2021-01-12 11:26:15 -0500 |
|---|---|---|
| committer | Vladimir N. Makarov <vmakarov@redhat.com> | 2021-01-12 11:27:29 -0500 |
| commit | cf2ac1c30af0fa783c8d72e527904dda5d8cc330 (patch) | |
| tree | a4bc0604739c4732d2e9770af00f7eabcde03d2a /gcc/gcov.c | |
| parent | e0bec6ceac47752616dd9fe0801344ed45db2fd3 (diff) | |
| download | gcc-cf2ac1c30af0fa783c8d72e527904dda5d8cc330.zip gcc-cf2ac1c30af0fa783c8d72e527904dda5d8cc330.tar.gz gcc-cf2ac1c30af0fa783c8d72e527904dda5d8cc330.tar.bz2 | |
[PR97969] LRA: Transform pattern `plus (plus (hard reg, const), pseudo)` after elimination
LRA can loop infinitely on targets without `reg + imm` insns. Register elimination
on such targets can increase register pressure resulting in permanent
stack size increase and changing elimination offset. To avoid such situation, a simple
transformation can be done to avoid register pressure increase after
generating reload insns containing eliminated hard regs.
gcc/ChangeLog:
PR target/97969
* lra-eliminations.c (eliminate_regs_in_insn): Add transformation
of pattern 'plus (plus (hard reg, const), pseudo)'.
gcc/testsuite/ChangeLog:
PR target/97969
* gcc.target/arm/pr97969.c: New.
Diffstat (limited to 'gcc/gcov.c')
0 files changed, 0 insertions, 0 deletions