diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 12fd34e..11cacae 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -4861,6 +4861,46 @@ expand_fix (rtx to, rtx from, int unsignedp) convert_move (to, target, 0); } } + +/* Generate code to convert FROM to fixed point and store in TO. FROM + must be floating point, TO must be signed. Use the conversion optab + TAB to do the conversion. */ + +bool +expand_sfix_optab (rtx to, rtx from, convert_optab tab) +{ + enum insn_code icode; + rtx target = to; + enum machine_mode fmode, imode; + + /* We first try to find a pair of modes, one real and one integer, at + least as wide as FROM and TO, respectively, in which we can open-code + this conversion. If the integer mode is wider than the mode of TO, + we can do the conversion either signed or unsigned. */ + + for (fmode = GET_MODE (from); fmode != VOIDmode; + fmode = GET_MODE_WIDER_MODE (fmode)) + for (imode = GET_MODE (to); imode != VOIDmode; + imode = GET_MODE_WIDER_MODE (imode)) + { + icode = tab->handlers[imode][fmode].insn_code; + if (icode != CODE_FOR_nothing) + { + if (fmode != GET_MODE (from)) + from = convert_to_mode (fmode, from, 0); + + if (imode != GET_MODE (to)) + target = gen_reg_rtx (imode); + + emit_unop_insn (icode, target, from, UNKNOWN); + if (target != to) + convert_move (to, target, 0); + return true; + } + } + + return false; +} /* Report whether we have an instruction to perform the operation specified by CODE on operands of mode MODE. */ @@ -5266,7 +5306,6 @@ init_optabs (void) btrunc_optab = init_optab (UNKNOWN); nearbyint_optab = init_optab (UNKNOWN); rint_optab = init_optab (UNKNOWN); - lrint_optab = init_optab (UNKNOWN); sincos_optab = init_optab (UNKNOWN); sin_optab = init_optab (UNKNOWN); asin_optab = init_optab (UNKNOWN); @@ -5325,6 +5364,7 @@ init_optabs (void) ufixtrunc_optab = init_convert_optab (UNKNOWN); sfloat_optab = init_convert_optab (FLOAT); ufloat_optab = init_convert_optab (UNSIGNED_FLOAT); + lrint_optab = init_convert_optab (UNKNOWN); for (i = 0; i < NUM_MACHINE_MODES; i++) { @@ -5444,6 +5484,8 @@ init_optabs (void) MODE_DECIMAL_FLOAT, MODE_INT); init_interclass_conv_libfuncs (ufloat_optab, "floatuns", MODE_INT, MODE_DECIMAL_FLOAT); + init_interclass_conv_libfuncs (lrint_optab, "lrint", + MODE_INT, MODE_FLOAT); /* sext_optab is also used for FLOAT_EXTEND. */ init_intraclass_conv_libfuncs (sext_optab, "extend", MODE_FLOAT, true); |