diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 17 |
1 files changed, 8 insertions, 9 deletions
@@ -4426,6 +4426,8 @@ struct set enum machine_mode mode; /* A constant equivalent for SET_SRC, if any. */ rtx src_const; + /* Original SET_SRC value used for libcall notes. */ + rtx orig_src; /* Hash value of constant equivalent for SET_SRC. */ unsigned src_const_hash; /* Table entry for constant equivalent for SET_SRC, if any. */ @@ -4624,6 +4626,7 @@ cse_insn (insn, libcall_insn) rtx new = canon_reg (src, insn); int insn_code; + sets[i].orig_src = src; if ((GET_CODE (new) == REG && GET_CODE (src) == REG && ((REGNO (new) < FIRST_PSEUDO_REGISTER) != (REGNO (src) < FIRST_PSEUDO_REGISTER))) @@ -5123,7 +5126,7 @@ cse_insn (insn, libcall_insn) the current contents will be tested and will always be valid. */ while (1) { - rtx trial, old_src; + rtx trial; /* Skip invalid entries. */ while (elt && GET_CODE (elt->exp) != REG @@ -5189,10 +5192,6 @@ cse_insn (insn, libcall_insn) insert the substitution here and we will delete and re-emit the insn later. */ - /* Keep track of the original SET_SRC so that we can fix notes - on libcall instructions. */ - old_src = SET_SRC (sets[i].rtl); - if (n_sets == 1 && dest == pc_rtx && (trial == pc_rtx || (GET_CODE (trial) == LABEL_REF @@ -5221,10 +5220,10 @@ cse_insn (insn, libcall_insn) need to make the same substitution in any notes attached to the RETVAL insn. */ if (libcall_insn - && (GET_CODE (old_src) == REG - || GET_CODE (old_src) == SUBREG - || GET_CODE (old_src) == MEM)) - replace_rtx (REG_NOTES (libcall_insn), old_src, + && (GET_CODE (sets[i].orig_src) == REG + || GET_CODE (sets[i].orig_src) == SUBREG + || GET_CODE (sets[i].orig_src) == MEM)) + replace_rtx (REG_NOTES (libcall_insn), sets[i].orig_src, canon_reg (SET_SRC (sets[i].rtl), insn)); /* The result of apply_change_group can be ignored; see |