diff options
| author | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-08 13:03:38 +0000 |
|---|---|---|
| committer | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-08 13:03:38 +0000 |
| commit | eb2457b02629ace37401c3e8df2b74ca769ef865 (patch) | |
| tree | d3cb9244ced6ff224a76525334a1a776a361f70c /gcc/optabs.c | |
| parent | b0676caddae7be6716e464683dd653e312fd2a6f (diff) | |
| download | gcc-eb2457b02629ace37401c3e8df2b74ca769ef865.tar.gz | |
* optabs.c (expand_binop): Tighten conditions for doubleword
expansions.
(widen_bswap): Assert that mode bitsize and precision are the
same.
* stor-layout.c (get_best_mode): Skip modes that have lower
precision than bitsize.
* recog.c (simplify_while_replacing): Assert that bitsize and
precision are the same.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176040 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index e1e172b5d0d..915a45e2abb 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -1428,12 +1428,12 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1, takes operands of this mode and makes a wider mode. */ if (binoptab == smul_optab - && GET_MODE_WIDER_MODE (mode) != VOIDmode + && GET_MODE_2XWIDER_MODE (mode) != VOIDmode && (optab_handler ((unsignedp ? umul_widen_optab : smul_widen_optab), - GET_MODE_WIDER_MODE (mode)) + GET_MODE_2XWIDER_MODE (mode)) != CODE_FOR_nothing)) { - temp = expand_binop (GET_MODE_WIDER_MODE (mode), + temp = expand_binop (GET_MODE_2XWIDER_MODE (mode), unsignedp ? umul_widen_optab : smul_widen_optab, op0, op1, NULL_RTX, unsignedp, OPTAB_DIRECT); @@ -1575,6 +1575,7 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1, && mclass == MODE_INT && (CONST_INT_P (op1) || optimize_insn_for_speed_p ()) && GET_MODE_SIZE (mode) == 2 * UNITS_PER_WORD + && GET_MODE_PRECISION (mode) == GET_MODE_BITSIZE (mode) && optab_handler (binoptab, word_mode) != CODE_FOR_nothing && optab_handler (ashl_optab, word_mode) != CODE_FOR_nothing && optab_handler (lshr_optab, word_mode) != CODE_FOR_nothing) @@ -1647,7 +1648,7 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1, if ((binoptab == rotl_optab || binoptab == rotr_optab) && mclass == MODE_INT && CONST_INT_P (op1) - && GET_MODE_SIZE (mode) == 2 * UNITS_PER_WORD + && GET_MODE_PRECISION (mode) == 2 * BITS_PER_WORD && optab_handler (ashl_optab, word_mode) != CODE_FOR_nothing && optab_handler (lshr_optab, word_mode) != CODE_FOR_nothing) { @@ -2463,6 +2464,8 @@ widen_bswap (enum machine_mode mode, rtx op0, rtx target) x = widen_operand (op0, wider_mode, mode, true, true); x = expand_unop (wider_mode, bswap_optab, x, NULL_RTX, true); + gcc_assert (GET_MODE_PRECISION (wider_mode) == GET_MODE_BITSIZE (wider_mode) + && GET_MODE_PRECISION (mode) == GET_MODE_BITSIZE (mode)); if (x != 0) x = expand_shift (RSHIFT_EXPR, wider_mode, x, GET_MODE_BITSIZE (wider_mode) |