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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-08-19 17:34:03 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-08-19 17:34:03 -0400 |
| commit | 92065e1fe2e21a4d722242f6ae6827f6e31da0c8 (patch) | |
| tree | 4affc847eacad9f1e5c8ffb36fda8adcc43747fa | |
| parent | 3c8db3f29c32dfceb1c054954b9859375f0b95da (diff) | |
| download | gcc-92065e1fe2e21a4d722242f6ae6827f6e31da0c8.zip gcc-92065e1fe2e21a4d722242f6ae6827f6e31da0c8.tar.gz gcc-92065e1fe2e21a4d722242f6ae6827f6e31da0c8.tar.bz2 | |
(calculate_giv_inc): Handle increment computed by ASHIFT.
From-SVN: r10256
| -rw-r--r-- | gcc/unroll.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 083f0ab..c598578 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -1412,10 +1412,13 @@ calculate_giv_inc (pattern, src_insn, regno) one of the LO_SUM rtx. */ if (GET_CODE (increment) == LO_SUM) increment = XEXP (increment, 1); - else if (GET_CODE (increment) == IOR) + else if (GET_CODE (increment) == IOR + || GET_CODE (increment) == ASHIFT) { - /* The rs6000 port loads some constants with IOR. */ + /* The rs6000 port loads some constants with IOR. + The alpha port loads some constants with ASHIFT. */ rtx second_part = XEXP (increment, 1); + enum rtx_code code = GET_CODE (increment); src_insn = PREV_INSN (src_insn); increment = SET_SRC (PATTERN (src_insn)); @@ -1426,7 +1429,10 @@ calculate_giv_inc (pattern, src_insn, regno) || GET_CODE (increment) != CONST_INT) abort (); - increment = GEN_INT (INTVAL (increment) | INTVAL (second_part)); + if (code == IOR) + increment = GEN_INT (INTVAL (increment) | INTVAL (second_part)); + else + increment = GEN_INT (INTVAL (increment) << INTVAL (second_part)); } if (GET_CODE (increment) != CONST_INT) |