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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-11-09 15:16:55 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-11-09 15:16:55 +0000 |
| commit | 4d83db5d73ce3e355f9ac166e04d72ce41decfb5 (patch) | |
| tree | 04800fbe66a0b37bd792a7cf6890779a1d5bfe6b /gcc/doc | |
| parent | 8b26c5492bf1d4c7acab18eff1e78a239af779a1 (diff) | |
| download | gcc-4d83db5d73ce3e355f9ac166e04d72ce41decfb5.zip gcc-4d83db5d73ce3e355f9ac166e04d72ce41decfb5.tar.gz gcc-4d83db5d73ce3e355f9ac166e04d72ce41decfb5.tar.bz2 | |
Add a vect_element_align_preferred target selector
This patch adds a target selector for targets whose
preferred_vector_alignment is the alignment of one element. We'll never
peel in that case, and the step of a loop that operates on normal (as
opposed to packed) elements will always divide the preferred alignment.
2017-11-09 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* doc/sourcebuild.texi (vect_element_align_preferred): Document.
gcc/testsuite/
* lib/target-supports.exp
(check_effective_target_vect_element_align_preferred): New proc.
(check_effective_target_vect_peeling_profitable): Test it.
* gcc.dg/vect/no-section-anchors-vect-31.c: Don't expect peeling
if vect_element_align_preferred.
* gcc.dg/vect/no-section-anchors-vect-64.c: Likewise.
* gcc.dg/vect/pr65310.c: Likewise.
* gcc.dg/vect/vect-26.c: Likewise.
* gcc.dg/vect/vect-54.c: Likewise.
* gcc.dg/vect/vect-56.c: Likewise.
* gcc.dg/vect/vect-58.c: Likewise.
* gcc.dg/vect/vect-60.c: Likewise.
* gcc.dg/vect/vect-89-big-array.c: Likewise.
* gcc.dg/vect/vect-89.c: Likewise.
* gcc.dg/vect/vect-92.c: Likewise.
* gcc.dg/vect/vect-peel-1.c: Likewise.
* gcc.dg/vect/vect-outer-3a-big-array.c: Expect the step to
divide the alignment if vect_element_align_preferred.
* gcc.dg/vect/vect-outer-3a.c: Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r254593
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/sourcebuild.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index b36c812..82c1d80 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -1383,6 +1383,10 @@ have different type from the value operands. @item vect_double Target supports hardware vectors of @code{double}. +@item vect_element_align_preferred +The target's preferred vector alignment is the same as the element +alignment. + @item vect_float Target supports hardware vectors of @code{float}. |