diff options
Diffstat (limited to 'gcc/config/i386/i386-expand.c')
| -rw-r--r-- | gcc/config/i386/i386-expand.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c index 166c23d..516440e 100644 --- a/gcc/config/i386/i386-expand.c +++ b/gcc/config/i386/i386-expand.c @@ -1550,6 +1550,8 @@ ix86_expand_convert_uns_sixf_sse (rtx, rtx) gcc_unreachable (); } +static rtx ix86_expand_sse_fabs (rtx op0, rtx *smask); + /* Convert an unsigned SImode value into a DFmode. Only currently used for SSE, but applicable anywhere. */ @@ -1569,6 +1571,11 @@ ix86_expand_convert_uns_sidf_sse (rtx target, rtx input) x = const_double_from_real_value (TWO31r, DFmode); x = expand_simple_binop (DFmode, PLUS, fp, x, target, 0, OPTAB_DIRECT); + + /* Remove the sign with FE_DOWNWARD, where x - x = -0.0. */ + if (HONOR_SIGNED_ZEROS (DFmode) && flag_rounding_math) + x = ix86_expand_sse_fabs (x, NULL); + if (x != target) emit_move_insn (target, x); } |