procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

i386.c (ix86_builtin_reciprocal): Remove check for TARGET_RECIP.

Browse source 
* config/i386/i386.c (ix86_builtin_reciprocal): Remove check
        for TARGET_RECIP.
        (ix86_emit_swsqrtsf): Do not filter out infinity for rsqrt expansion.

From-SVN: r131342
This commit is contained in:
Uros Bizjak 2008-01-05 21:33:33 +01:00 • committed by Uros Bizjak
parent a6514ef2c0
commit 5a37a60ccb
2 changed files with 13 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2008-01-05 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_builtin_reciprocal): Remove check
for TARGET_RECIP.
(ix86_emit_swsqrtsf): Do not filter out infinity for rsqrt expansion.
2008-01-05 Richard Sandiford <rsandifo@nildram.co.uk>
* c-omp.c (check_omp_for_incr_expr): Handle CONVERT_EXPR.

12
gcc/config/i386/i386.c
View file

@ -21466,7 +21466,7 @@ static tree
ix86_builtin_reciprocal (unsigned int fn, bool md_fn,
bool sqrt ATTRIBUTE_UNUSED)
{
if (! (TARGET_SSE_MATH && TARGET_RECIP && !optimize_size
if (! (TARGET_SSE_MATH && !optimize_size
&& flag_finite_math_only && !flag_trapping_math
&& flag_unsafe_math_optimizations))
return NULL_TREE;
@ -24239,16 +24239,18 @@ void ix86_emit_swsqrtsf (rtx res, rtx a, enum machine_mode mode,
1.0 / sqrt(a) = 0.5 * rsqrtss(a) * (3.0 - a * rsqrtss(a) * rsqrtss(a)) */
/* Compare a to zero. */
emit_insn (gen_rtx_SET (VOIDmode, mask,
gen_rtx_NE (mode, zero, a)));
if (!recip)
emit_insn (gen_rtx_SET (VOIDmode, mask,
gen_rtx_NE (mode, zero, a)));
/* x0 = 1./sqrt(a) estimate */
emit_insn (gen_rtx_SET (VOIDmode, x0,
gen_rtx_UNSPEC (mode, gen_rtvec (1, a),
UNSPEC_RSQRT)));
/* Filter out infinity. */
emit_insn (gen_rtx_SET (VOIDmode, x0,
gen_rtx_AND (mode, x0, mask)));
if (!recip)
emit_insn (gen_rtx_SET (VOIDmode, x0,
gen_rtx_AND (mode, x0, mask)));
/* e0 = x0 * a */
emit_insn (gen_rtx_SET (VOIDmode, e0,
gen_rtx_MULT (mode, x0, a)));