diff options
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 1df4b7fd1de..8a3fe3506d2 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -3104,8 +3104,18 @@ peephole2_optimize (FILE *dump_file ATTRIBUTE_UNUSED) propagate_one_insn (pbi, insn); COPY_REG_SET (peep2_insn_data[peep2_current].live_before, live); - /* Match the peephole. */ - try = peephole2_insns (PATTERN (insn), insn, &match_len); + if (RTX_FRAME_RELATED_P (insn)) + { + /* If an insn has RTX_FRAME_RELATED_P set, peephole + substitution would lose the + REG_FRAME_RELATED_EXPR that is attached. */ + peep2_current_count = 0; + try = NULL; + } + else + /* Match the peephole. */ + try = peephole2_insns (PATTERN (insn), insn, &match_len); + if (try != NULL) { /* If we are splitting a CALL_INSN, look for the CALL_INSN |