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| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-06-19 14:57:17 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-06-19 14:57:17 +0000 |
| commit | b7ba5735b5557bbfdcc5c328d80e2274f63b185a (patch) | |
| tree | c8e8a3185728aab4a7f079fa123272dd2738ec55 /gcc/expmed.c | |
| parent | 68826b15f5e926316dafc8fc1528d6c14d401b16 (diff) | |
| download | gcc-b7ba5735b5557bbfdcc5c328d80e2274f63b185a.tar.gz | |
PR target/27861
* expmed.c (expand_shift): On SHIFT_COUNT_TRUNCATED targets, we may
have stripped a SUBREG from the shift count, so we may need to
convert_to_mode back to the type's mode before calling make_tree.
Use new_amount instead of amount to avoid expanding a tree twice.
* gcc.dg/pr27861-1.c: New test case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114773 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 2e8906eb7a9..6f4e3311546 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2260,13 +2260,17 @@ expand_shift (enum tree_code code, enum machine_mode mode, rtx shifted, code below. */ rtx subtarget = target == shifted ? 0 : target; + tree new_amount, other_amount; rtx temp1; tree type = TREE_TYPE (amount); - tree new_amount = make_tree (type, op1); - tree other_amount + if (GET_MODE (op1) != TYPE_MODE (type) + && GET_MODE (op1) != VOIDmode) + op1 = convert_to_mode (TYPE_MODE (type), op1, 1); + new_amount = make_tree (type, op1); + other_amount = fold_build2 (MINUS_EXPR, type, build_int_cst (type, GET_MODE_BITSIZE (mode)), - amount); + new_amount); shifted = force_reg (mode, shifted); |