https://gcc.gnu.org/g:538177d9b4c48321e07e1fd5647ed960049288f8
commit r16-6821-g538177d9b4c48321e07e1fd5647ed960049288f8 Author: Vladimir N. Makarov <[email protected]> Date: Fri Jan 16 10:09:52 2026 -0500 [PR123092, LRA]: Reprocess insn after equivalence substitution LRA in the test case substituted equivalence in an insn but did not process the insn on satisfying constraints after that. It resulted in error "insn does not satisfy its constraints" gcc/ChangeLog: PR target/123092 * lra-constraints.cc (lra_constraints): Push insn on processing stack after equivalence substitution. gcc/testsuite/ChangeLog: PR target/123092 * gcc.target/riscv/pr123092.c: New. Diff: --- gcc/lra-constraints.cc | 1 + gcc/testsuite/gcc.target/riscv/pr123092.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/gcc/lra-constraints.cc b/gcc/lra-constraints.cc index ba7342f3ed27..e3cee9472431 100644 --- a/gcc/lra-constraints.cc +++ b/gcc/lra-constraints.cc @@ -5664,6 +5664,7 @@ lra_constraints (bool first_p) && loc_equivalence_change_p (&PATTERN (curr_insn))) { lra_update_insn_regno_info (curr_insn); + lra_push_insn_by_uid (INSN_UID (curr_insn)); changed_p = true; } } diff --git a/gcc/testsuite/gcc.target/riscv/pr123092.c b/gcc/testsuite/gcc.target/riscv/pr123092.c new file mode 100644 index 000000000000..ebcf177a1218 --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/pr123092.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -march=rv64gc_zicbop -mabi=lp64d" } */ +struct a { + char *b; +} d; +int e; +int c(struct a *); +void f() { + __builtin_prefetch(d.b + 64); + if (e) + c(&d); +}
