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cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL insn's notes following a...

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* cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL
	insn's notes following a substitution inside a libcall.

From-SVN: r61524
This commit is contained in:
Roger Sayle 2003-01-21 01:52:46 +00:00 committed by Roger Sayle
parent aa4fb101f1
commit dbaff908a0
2 changed files with 9 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-01-20 Roger Sayle <roger@eyesopen.com>
* cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL
insn's notes following a substitution inside a libcall.
2003-01-20 Zack Weinberg <zack@codesourcery.com>
* configure.in: Check for system-provided 'uchar' type.

8
gcc/cse.c
View File

@ -5557,6 +5557,8 @@ cse_insn (insn, libcall_insn)
/* Look for a substitution that makes a valid insn. */
else if (validate_change (insn, &SET_SRC (sets[i].rtl), trial, 0))
{
rtx new = canon_reg (SET_SRC (sets[i].rtl), insn);
/* If we just made a substitution inside a libcall, then we
need to make the same substitution in any notes attached
to the RETVAL insn. */
@ -5565,14 +5567,12 @@ cse_insn (insn, libcall_insn)
|| 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));
copy_rtx (new));
/* The result of apply_change_group can be ignored; see
canon_reg. */
validate_change (insn, &SET_SRC (sets[i].rtl),
canon_reg (SET_SRC (sets[i].rtl), insn),
1);
validate_change (insn, &SET_SRC (sets[i].rtl), new, 1);
apply_change_group ();
break;
}