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| author | Richard Kenner <kenner@gcc.gnu.org> | 1993-03-30 15:36:43 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1993-03-30 15:36:43 -0500 |
| commit | 99309f3bcbb8cd7d7504a89b32588d301609bf9e (patch) | |
| tree | b39e317a5a9ab4ccd349302a9169191489e86df3 | |
| parent | 2c0623e83abf78609905752326e68fc5b6724ffd (diff) | |
| download | gcc-99309f3bcbb8cd7d7504a89b32588d301609bf9e.zip gcc-99309f3bcbb8cd7d7504a89b32588d301609bf9e.tar.gz gcc-99309f3bcbb8cd7d7504a89b32588d301609bf9e.tar.bz2 | |
(find_regno_note): Find note that overlaps REGNO, not just one that
mentions REGNO explicitly.
From-SVN: r3929
| -rw-r--r-- | gcc/rtlanal.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 658f57f..549f905 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -1135,7 +1135,9 @@ find_reg_note (insn, kind, datum) } /* Return the reg-note of kind KIND in insn INSN which applies to register - number REGNO, if any. Return 0 if there is no such reg-note. */ + number REGNO, if any. Return 0 if there is no such reg-note. Note that + the REGNO of this NOTE need not be REGNO if REGNO is a hard register; + it might be the case that the note overlaps REGNO. */ rtx find_regno_note (insn, kind, regno) @@ -1150,7 +1152,12 @@ find_regno_note (insn, kind, regno) /* Verify that it is a register, so that scratch and MEM won't cause a problem here. */ && GET_CODE (XEXP (link, 0)) == REG - && REGNO (XEXP (link, 0)) == regno) + && REGNO (XEXP (link, 0)) <= regno + && ((REGNO (XEXP (link, 0)) + + (REGNO (XEXP (link, 0)) >= FIRST_PSEUDO_REGISTER ? 1 + : HARD_REGNO_NREGS (REGNO (XEXP (link, 0)), + GET_MODE (XEXP (link, 0))))) + > regno)) return link; return 0; } |