diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/c4x/c4x.c | 24 |
2 files changed, 23 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a38290f..f8c2082 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2000-07-30 Michael Hayes <m.hayes@elec.canterbury.ac.nz> - + + * config/c4x/c4x.c (c4x_rptb_insert): Make more robust. + +2000-07-30 Michael Hayes <m.hayes@elec.canterbury.ac.nz> + * config/c4x/c4x.h (ASM_FORMAT_PRIVATE_NAME): Output $ in label. 2000-07-30 Michael Hayes <m.hayes@elec.canterbury.ac.nz> diff --git a/gcc/config/c4x/c4x.c b/gcc/config/c4x/c4x.c index 9972f47..dcc48ff 100644 --- a/gcc/config/c4x/c4x.c +++ b/gcc/config/c4x/c4x.c @@ -2214,6 +2214,7 @@ c4x_rptb_insert (insn) { rtx end_label; rtx start_label; + rtx new_start_label; rtx count_reg; /* If the count register has not been allocated to RC, say if @@ -2227,21 +2228,32 @@ c4x_rptb_insert (insn) /* Extract the start label from the jump pattern (rptb_end). */ start_label = XEXP (XEXP (SET_SRC (XVECEXP (PATTERN (insn), 0, 0)), 1), 0); - /* We'll have to update the basic blocks. */ end_label = gen_label_rtx (); + LABEL_NUSES (end_label)++; emit_label_after (end_label, insn); + new_start_label = gen_label_rtx (); + LABEL_NUSES (new_start_label)++; + for (; insn; insn = PREV_INSN (insn)) - if (insn == start_label) - break; + { + if (insn == start_label) + break; + if (GET_CODE (insn) == JUMP_INSN && + JUMP_LABEL (insn) == start_label) + redirect_jump (insn, new_start_label, 0); + } if (! insn) fatal_insn ("c4x_rptb_insert: Cannot find start label", start_label); - /* We'll have to update the basic blocks. */ + emit_label_after (new_start_label, insn); + if (TARGET_RPTS && c4x_rptb_rpts_p (PREV_INSN (insn), 0)) - emit_insn_before (gen_rpts_top (start_label, end_label), insn); + emit_insn_after (gen_rpts_top (new_start_label, end_label), insn); else - emit_insn_before (gen_rptb_top (start_label, end_label), insn); + emit_insn_after (gen_rptb_top (new_start_label, end_label), insn); + if (LABEL_NUSES (start_label) == 0) + delete_insn (start_label); } |