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New target check: vect_long_mult

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We don't have a 64 bit vector integer multiply on z.  Add a specific
check for that.

gcc/ChangeLog:

2017-10-04  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* doc/sourcebuild.texi: Document vect_long_mult.

gcc/testsuite/ChangeLog:

2017-10-04  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.dg/vect/pr60656.c: Check vect_long_mult.
	* lib/target-supports.exp (check_effective_target_vect_long_mult):
	New proc.

From-SVN: r253405
This commit is contained in:
Andreas Krebbel 2017-10-04 11:58:22 +00:00 committed by Andreas Krebbel
parent a46461133e
commit c059a92ecc
5 changed files with 39 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2017-10-04 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* doc/sourcebuild.texi: Document vect_long_mult.
2017-10-04 Richard Sandiford <richard.sandiford@linaro.org>
PR tree-optimization/82413

3
gcc/doc/sourcebuild.texi
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@ -1422,6 +1422,9 @@ Target supports @code{vector short} multiplication.
@item vect_int_mult
Target supports @code{vector int} multiplication.
@item vect_long_mult
Target supports 64 bit @code{vector long} multiplication.
@item vect_extract_even_odd
Target supports vector even/odd element extraction.

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2017-10-04 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* gcc.dg/vect/pr60656.c: Check vect_long_mult.
* lib/target-supports.exp (check_effective_target_vect_long_mult):
New proc.
2017-10-04 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* gfortran.dg/vect/fast-math-mgrid-resid.f: Use -mzarch on S/390.

3
gcc/testsuite/gcc.dg/vect/pr60656.c
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@ -43,4 +43,5 @@ int main()
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_widen_mult_si_to_di_pattern } } } */
/* P * P * P requires a widening multiplication first as well as a longxlong->long after that. */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_mult_si_to_di_pattern && vect_long_mult } } } } */

24
gcc/testsuite/lib/target-supports.exp
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@ -6299,6 +6299,30 @@ proc check_effective_target_vect_int_mult { } {
return $et_vect_int_mult_saved($et_index)
}
# Return 1 if the target supports 64 bit hardware vector
# multiplication of long operands with a long result, 0 otherwise.
#
# This can change for different subtargets so do not cache the result.
proc check_effective_target_vect_long_mult { } {
if { [istarget i?86-*-*] || [istarget x86_64-*-*]
|| (([istarget powerpc*-*-*]
&& ![istarget powerpc-*-linux*paired*])
&& [check_effective_target_ilp32])
|| [is-effective-target arm_neon]
|| ([istarget sparc*-*-*] && [check_effective_target_ilp32])
|| [istarget aarch64*-*-*]
|| ([istarget mips*-*-*]
&& [et-is-effective-target mips_msa]) } {
set answer 1
} else {
set answer 0
}
verbose "check_effective_target_vect_long_mult: returning $answer" 2
return $answer
}
# Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.
proc check_effective_target_vect_extract_even_odd { } {