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| author | Peter Bergner <bergner@vnet.ibm.com> | 2006-11-22 13:06:41 -0600 |
|---|---|---|
| committer | Peter Bergner <bergner@gcc.gnu.org> | 2006-11-22 13:06:41 -0600 |
| commit | e3a0e200647c46fb88064dc335cb9cbaf30eb398 (patch) | |
| tree | dee9e079a9d381fed8bb6b687080c2aaf3649754 /gcc | |
| parent | 61c76239491374472580e174a87c00f5bcbb93ed (diff) | |
| download | gcc-e3a0e200647c46fb88064dc335cb9cbaf30eb398.zip gcc-e3a0e200647c46fb88064dc335cb9cbaf30eb398.tar.gz gcc-e3a0e200647c46fb88064dc335cb9cbaf30eb398.tar.bz2 | |
rs6000.c (get_store_dest): New.
* config/rs6000/rs6000.c (get_store_dest): New.
(adjacent_mem_locations): Use get_store_dest() to get
the rtl of the store destination.
From-SVN: r119099
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 33 |
2 files changed, 36 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 31edafe..c6fdb9f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2006-11-22 Peter Bergner <bergner@vnet.ibm.com> + + * config/rs6000/rs6000.c (get_store_dest): New. + (adjacent_mem_locations): Use get_store_dest() to get + the rtl of the store destination. + 2006-11-22 Joseph Myers <joseph@codesourcery.com> * config/rs6000/spe.md (SPE64): New mode macro. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index f8e58fb..51e5117 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -693,6 +693,7 @@ static bool is_nonpipeline_insn (rtx); static bool is_cracked_insn (rtx); static bool is_branch_slot_insn (rtx); static bool is_load_insn (rtx); +static rtx get_store_dest (rtx pat); static bool is_store_insn (rtx); static bool set_to_load_agen (rtx,rtx); static bool adjacent_mem_locations (rtx,rtx); @@ -17066,9 +17067,9 @@ static bool adjacent_mem_locations (rtx insn1, rtx insn2) { - rtx a = SET_DEST (PATTERN (insn1)); - rtx b = SET_DEST (PATTERN (insn2)); - + rtx a = get_store_dest (PATTERN (insn1)); + rtx b = get_store_dest (PATTERN (insn2)); + if ((GET_CODE (XEXP (a, 0)) == REG || (GET_CODE (XEXP (a, 0)) == PLUS && GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT)) @@ -17374,6 +17375,32 @@ is_store_insn (rtx insn) return is_store_insn1 (PATTERN (insn)); } +/* Return the dest of a store insn. */ + +static rtx +get_store_dest (rtx pat) +{ + gcc_assert (is_store_insn1 (pat)); + + if (GET_CODE (pat) == SET) + return SET_DEST (pat); + else if (GET_CODE (pat) == PARALLEL) + { + int i; + + for (i = 0; i < XVECLEN (pat, 0); i++) + { + rtx inner_pat = XVECEXP (pat, 0, i); + if (GET_CODE (inner_pat) == SET + && is_mem_ref (SET_DEST (inner_pat))) + return inner_pat; + } + } + /* We shouldn't get here, because we should have either a simple + store insn or a store with update which are covered above. */ + gcc_unreachable(); +} + /* Returns whether the dependence between INSN and NEXT is considered costly by the given target. */ |