diff options
Diffstat (limited to 'gcc/optabs.cc')
| -rw-r--r-- | gcc/optabs.cc | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/gcc/optabs.cc b/gcc/optabs.cc index 4c641ca..c725f35 100644 --- a/gcc/optabs.cc +++ b/gcc/optabs.cc @@ -5674,7 +5674,21 @@ expand_fix (rtx to, rtx from, int unsignedp) rtx_insn *last = get_last_insn (); rtx from1 = from; if (fmode != GET_MODE (from)) - from1 = convert_to_mode (fmode, from, 0); + { + if (REAL_MODE_FORMAT (GET_MODE (from)) + == &arm_bfloat_half_format + && REAL_MODE_FORMAT (fmode) == &ieee_single_format) + /* The BF -> SF conversions can be just a shift, doesn't + need to handle sNANs. */ + { + int save_flag_finite_math_only = flag_finite_math_only; + flag_finite_math_only = true; + from1 = convert_to_mode (fmode, from, 0); + flag_finite_math_only = save_flag_finite_math_only; + } + else + from1 = convert_to_mode (fmode, from, 0); + } if (must_trunc) { @@ -5746,7 +5760,21 @@ expand_fix (rtx to, rtx from, int unsignedp) lab2 = gen_label_rtx (); if (fmode != GET_MODE (from)) - from = convert_to_mode (fmode, from, 0); + { + if (REAL_MODE_FORMAT (GET_MODE (from)) + == &arm_bfloat_half_format + && REAL_MODE_FORMAT (fmode) == &ieee_single_format) + /* The BF -> SF conversions can be just a shift, doesn't + need to handle sNANs. */ + { + int save_flag_finite_math_only = flag_finite_math_only; + flag_finite_math_only = true; + from = convert_to_mode (fmode, from, 0); + flag_finite_math_only = save_flag_finite_math_only; + } + else + from = convert_to_mode (fmode, from, 0); + } /* See if we need to do the subtraction. */ do_pending_stack_adjust (); @@ -5790,6 +5818,22 @@ expand_fix (rtx to, rtx from, int unsignedp) } } +#ifdef HAVE_SFmode + if (REAL_MODE_FORMAT (GET_MODE (from)) == &arm_bfloat_half_format + && REAL_MODE_FORMAT (SFmode) == &ieee_single_format) + /* We don't have BF -> TI library functions, use BF -> SF -> TI + instead but the BF -> SF conversion can be just a shift, doesn't + need to handle sNANs. */ + { + int save_flag_finite_math_only = flag_finite_math_only; + flag_finite_math_only = true; + from = convert_to_mode (SFmode, from, 0); + flag_finite_math_only = save_flag_finite_math_only; + expand_fix (to, from, unsignedp); + return; + } +#endif + /* We can't do it with an insn, so use a library call. But first ensure that the mode of TO is at least as wide as SImode, since those are the only library calls we know about. */ |