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re PR target/37169 (Inefficent code for _mm_cvtsi64_si128)

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gcc/

2008-08-20  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/37169
	* config/i386/i386.c (ix86_expand_vector_init_one_nonzero): In
	V2DI mode, for SSE4.1, use movq instead of vector set if the
	second element is zero and inter-unit moves are OK.

gcc/testsuite/

2008-08-20  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/37169
	* i386/sse2-init-v2di-2.c: New.

From-SVN: r139289
This commit is contained in:
H.J. Lu 2008-08-20 06:22:30 -07:00
parent 4fedf870f5
commit 89da39ee52
4 changed files with 46 additions and 15 deletions
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31
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2008-08-20 H.J. Lu <hongjiu.lu@intel.com>
PR target/37169
* config/i386/i386.c (ix86_expand_vector_init_one_nonzero): In
V2DI mode, for SSE4.1, use movq instead of vector set if the
second element is zero and inter-unit moves are OK.
2008-08-20 Richard Guenther <rguenther@suse.de>
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): More
@ -16,7 +23,7 @@
support of this feature. Do not assume that a sufficiently new
assembler will support the feature regardless of the target type.
(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE): Likewise.
* configure: Regenerate.
* configure: Regenerate.
2008-08-20 Richard Guenther <rguenther@suse.de>
@ -389,24 +396,24 @@
* config/s390/2097.md New file.
* config/s390/s390.md ("z10prop" attribute): Define none,
z10_super, z10_super_E1, z10_super_A1, z10_super_c,
z10_super_c_E1, z10_fwd, z10_fwd_A1, z10_fwd_A3, z10_fwd_E1,
z10_rec, z10_fr, z10_fr_A3, z10_fr_E1, z10_c, and z10_cobra as
possible values and apply them to insns as appropriate.
("type" attribute): Removed itof and added ftrunctf,ftruncdf,
ftruncsd, ftruncdd, itoftf, itofdf, itofsf, itofdd, itoftd,
fdivdd, fdivtd, floaddd, floadsd, fmuldd, fmultd, fsimpdd,
fsimpsd, fsimptd, fstoredd, fstoresd, ftoidfp as possible
values.
z10_super, z10_super_E1, z10_super_A1, z10_super_c,
z10_super_c_E1, z10_fwd, z10_fwd_A1, z10_fwd_A3, z10_fwd_E1,
z10_rec, z10_fr, z10_fr_A3, z10_fr_E1, z10_c, and z10_cobra as
possible values and apply them to insns as appropriate.
("type" attribute): Removed itof and added ftrunctf,ftruncdf,
ftruncsd, ftruncdd, itoftf, itofdf, itofsf, itofdd, itoftd,
fdivdd, fdivtd, floaddd, floadsd, fmuldd, fmultd, fsimpdd,
fsimpsd, fsimptd, fstoredd, fstoresd, ftoidfp as possible
values.
("bfp" mode attribute): Removed. Every occurence replaced
with <mode>.
* config/s390/s390.c (struct "z10_cost"): Updated entries.
* config/s390/2084.md (insn_reservation "x_itof"): Updated
type attribute.
type attribute.
2008-08-14 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR c/28152
PR c/28152
* c-parser.c (c_lex_one_token): Do not store the canonical spelling
for keywords.

8
gcc/config/i386/i386.c
View file

@ -25104,7 +25104,13 @@ ix86_expand_vector_init_one_nonzero (bool mmx_ok, enum machine_mode mode,
switch (mode)
{
case V2DImode:
use_vector_set = TARGET_64BIT && TARGET_SSE4_1;
/* For SSE4.1, we normally use vector set. But if the second
element is zero and inter-unit moves are OK, we use movq
instead. */
use_vector_set = (TARGET_64BIT
&& TARGET_SSE4_1
&& !(TARGET_INTER_UNIT_MOVES
&& one_var == 0));
break;
case V16QImode:
case V4SImode:

9
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2008-08-20 H.J. Lu <hongjiu.lu@intel.com>
PR target/37169
* i386/sse2-init-v2di-2.c: New.
2008-08-20 Richard Guenther <rguenther@suse.de>
* gcc.dg/tree-ssa/forwprop-9.c: Scan FRE dump as well.
@ -47,7 +52,7 @@
2008-08-20 Victor Kaplansky <victork@il.ibm.com>
* gcc.dg/vect/vect-multitypes-15.c: Fix typo.
* gcc.dg/vect/vect-multitypes-15.c: Fix typo.
* gcc/testsuite/lib/target-supports.exp
(check_effective_target_vect_long_long): Remove spu-*-*.
* gcc.dg/vect/vect-multitypes-16.c: Make init loop unvectorizable.
@ -278,7 +283,7 @@
2008-08-14 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR c/28152
PR c/28152
* gcc.dg/parser-pr28152.c: New.
* gcc.dg/parser-pr28152-2.c: New.

13
gcc/testsuite/gcc.target/i386/sse2-init-v2di-2.c Normal file
View file

@ -0,0 +1,13 @@
/* { dg-do compile } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2 -msse4 -march=core2" } */
#include <emmintrin.h>
__m128i
test (long long b)
{
return _mm_cvtsi64_si128 (b);
}
/* { dg-final { scan-assembler "movq" } } */