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| author | tege <tege@138bc75d-0d04-0410-961f-82ee72b054a4> | 1995-12-14 23:39:17 +0000 |
|---|---|---|
| committer | tege <tege@138bc75d-0d04-0410-961f-82ee72b054a4> | 1995-12-14 23:39:17 +0000 |
| commit | 61e477c74a1f4b76680e9e1cb3207504f5c4279b (patch) | |
| tree | 1c388ed40c37cc299169a158ac14f5572b140f74 /gcc/expmed.c | |
| parent | 35386fd86bd7611064c8db55efb6da51cdbead0a (diff) | |
| download | gcc-61e477c74a1f4b76680e9e1cb3207504f5c4279b.tar.gz | |
(expand_divmod, case TRUNC_DIV_EXPR): Only reject
larger-than-HOST_BITS_PER_WIDE_INT modes for general constants,
not for powers-of-2.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@10727 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 b89a5f85213..4341b993031 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2835,7 +2835,7 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) { case TRUNC_MOD_EXPR: case TRUNC_DIV_EXPR: - if (op1_is_constant && HOST_BITS_PER_WIDE_INT >= size) + if (op1_is_constant) { if (unsignedp) { @@ -2870,7 +2870,7 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) if (quotient == 0) goto fail1; } - else + else if (size <= HOST_BITS_PER_WIDE_INT) { /* Find a suitable multiplier and right shift count instead of multiplying with D. */ @@ -2936,6 +2936,8 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) tquotient, 1); } } + else /* Too wide mode to use tricky code */ + break; insn = get_last_insn (); if (insn != last @@ -3029,7 +3031,7 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) quotient, quotient, 0); } } - else + else if (size <= HOST_BITS_PER_WIDE_INT) { choose_multiplier (abs_d, size, size - 1, &ml, &post_shift, &lgup); @@ -3081,6 +3083,8 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) tquotient); } } + else /* Too wide mode to use tricky code */ + break; insn = get_last_insn (); if (insn != last |