[PATCH, i386]: Rewrite ix86_build_const_vector
Uros Bizjak
ubizjak@gmail.com
Sat Aug 27 10:19:00 GMT 2011
Hello!
No functional change.
2011-08-26 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_build_const_vector): Rewrite using loop
with RTVEC_ELT accessor.
Tested on x86_64-pc-linux-gnu, committed to mainline.
Uros.
-------------- next part --------------
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c (revision 178123)
+++ config/i386/i386.c (working copy)
@@ -16512,53 +16512,30 @@ ix86_expand_convert_uns_sisf_sse (rtx target, rtx
rtx
ix86_build_const_vector (enum machine_mode mode, bool vect, rtx value)
{
+ int i, n_elt;
rtvec v;
+ enum machine_mode scalar_mode;
+
switch (mode)
{
case V4SImode:
- gcc_assert (vect);
- v = gen_rtvec (4, value, value, value, value);
- return gen_rtx_CONST_VECTOR (V4SImode, v);
-
case V2DImode:
gcc_assert (vect);
- v = gen_rtvec (2, value, value);
- return gen_rtx_CONST_VECTOR (V2DImode, v);
-
case V8SFmode:
- if (vect)
- v = gen_rtvec (8, value, value, value, value,
- value, value, value, value);
- else
- v = gen_rtvec (8, value, CONST0_RTX (SFmode),
- CONST0_RTX (SFmode), CONST0_RTX (SFmode),
- CONST0_RTX (SFmode), CONST0_RTX (SFmode),
- CONST0_RTX (SFmode), CONST0_RTX (SFmode));
- return gen_rtx_CONST_VECTOR (V8SFmode, v);
-
case V4SFmode:
- if (vect)
- v = gen_rtvec (4, value, value, value, value);
- else
- v = gen_rtvec (4, value, CONST0_RTX (SFmode),
- CONST0_RTX (SFmode), CONST0_RTX (SFmode));
- return gen_rtx_CONST_VECTOR (V4SFmode, v);
-
case V4DFmode:
- if (vect)
- v = gen_rtvec (4, value, value, value, value);
- else
- v = gen_rtvec (4, value, CONST0_RTX (DFmode),
- CONST0_RTX (DFmode), CONST0_RTX (DFmode));
- return gen_rtx_CONST_VECTOR (V4DFmode, v);
-
case V2DFmode:
- if (vect)
- v = gen_rtvec (2, value, value);
- else
- v = gen_rtvec (2, value, CONST0_RTX (DFmode));
- return gen_rtx_CONST_VECTOR (V2DFmode, v);
+ n_elt = GET_MODE_NUNITS (mode);
+ v = rtvec_alloc (n_elt);
+ scalar_mode = GET_MODE_INNER (mode);
+ RTVEC_ELT (v, 0) = value;
+
+ for (i = 1; i < n_elt; ++i)
+ RTVEC_ELT (v, i) = vect ? value : CONST0_RTX (scalar_mode);
+
+ return gen_rtx_CONST_VECTOR (mode, v);
+
default:
gcc_unreachable ();
}
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