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authorRichard Sandiford <richard.sandiford@linaro.org>2017-11-01 09:20:15 +0000
committerRichard Sandiford <rsandifo@gcc.gnu.org>2017-11-01 09:20:15 +0000
commit59d06c050373919ed36a13b37103b6e069d8ebd3 (patch)
tree7dd263d0996c053d689121993600e51fa33249b4 /gcc/config/spu/spu.c
parenta9b76c8962410173ba0351b5b05b5f1f91742fc6 (diff)
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Add gen_(const_)vec_duplicate helpers
This patch adds helper functions for generating constant and non-constant vector duplicates. These routines help with SVE because it is then easier to use: (const:M (vec_duplicate:M X)) for a broadcast of X, even if the number of elements in M isn't known at compile time. It also makes it easier for general rtx code to treat constant and non-constant duplicates in the same way. In the target code, the patch uses gen_vec_duplicate instead of gen_rtx_VEC_DUPLICATE if handling constants correctly is potentially useful. It might be that some or all of the call sites only handle non-constants in practice, in which case the change is a harmless no-op (and a saving of a few characters). Otherwise, the target changes use gen_const_vec_duplicate instead of gen_rtx_CONST_VECTOR if the constant is obviously a duplicate. They also include some changes to use CONSTxx_RTX for easy global constants. 2017-11-01 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> gcc/ * emit-rtl.h (gen_const_vec_duplicate): Declare. (gen_vec_duplicate): Likewise. * emit-rtl.c (gen_const_vec_duplicate_1): New function, split out from... (gen_const_vector): ...here. (gen_const_vec_duplicate, gen_vec_duplicate): New functions. (gen_rtx_CONST_VECTOR): Use gen_const_vec_duplicate for constants whose elements are all equal. * optabs.c (expand_vector_broadcast): Use gen_const_vec_duplicate. * simplify-rtx.c (simplify_const_unary_operation): Likewise. (simplify_relational_operation): Likewise. * config/aarch64/aarch64.c (aarch64_simd_gen_const_vector_dup): Likewise. (aarch64_simd_dup_constant): Use gen_vec_duplicate. (aarch64_expand_vector_init): Likewise. * config/arm/arm.c (neon_vdup_constant): Likewise. (neon_expand_vector_init): Likewise. (arm_expand_vec_perm): Use gen_const_vec_duplicate. (arm_block_set_unaligned_vect): Likewise. (arm_block_set_aligned_vect): Likewise. * config/arm/neon.md (neon_copysignf<mode>): Likewise. * config/i386/i386.c (ix86_expand_vec_perm): Likewise. (expand_vec_perm_even_odd_pack): Likewise. (ix86_vector_duplicate_value): Use gen_vec_duplicate. * config/i386/sse.md (one_cmpl<mode>2): Use CONSTM1_RTX. * config/ia64/ia64.c (ia64_expand_vecint_compare): Use gen_const_vec_duplicate. * config/ia64/vect.md (addv2sf3, subv2sf3): Use CONST1_RTX. * config/mips/mips.c (mips_gen_const_int_vector): Use gen_const_vec_duplicate. (mips_expand_vector_init): Use CONST0_RTX. * config/powerpcspe/altivec.md (abs<mode>2, nabs<mode>2): Likewise. (define_split): Use gen_const_vec_duplicate. * config/rs6000/altivec.md (abs<mode>2, nabs<mode>2): Use CONST0_RTX. (define_split): Use gen_const_vec_duplicate. * config/s390/vx-builtins.md (vec_genmask<mode>): Likewise. (vec_ctd_s64, vec_ctd_u64, vec_ctsl, vec_ctul): Likewise. * config/spu/spu.c (spu_const): Likewise. Co-Authored-By: Alan Hayward <alan.hayward@arm.com> Co-Authored-By: David Sherwood <david.sherwood@arm.com> From-SVN: r254292
Diffstat (limited to 'gcc/config/spu/spu.c')
-rw-r--r--gcc/config/spu/spu.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/gcc/config/spu/spu.c b/gcc/config/spu/spu.c
index bf21cca..7825210 100644
--- a/gcc/config/spu/spu.c
+++ b/gcc/config/spu/spu.c
@@ -1903,8 +1903,6 @@ rtx
spu_const (machine_mode mode, HOST_WIDE_INT val)
{
rtx inner;
- rtvec v;
- int units, i;
gcc_assert (GET_MODE_CLASS (mode) == MODE_INT
|| GET_MODE_CLASS (mode) == MODE_FLOAT
@@ -1923,14 +1921,7 @@ spu_const (machine_mode mode, HOST_WIDE_INT val)
else
inner = hwint_to_const_double (GET_MODE_INNER (mode), val);
- units = GET_MODE_NUNITS (mode);
-
- v = rtvec_alloc (units);
-
- for (i = 0; i < units; ++i)
- RTVEC_ELT (v, i) = inner;
-
- return gen_rtx_CONST_VECTOR (mode, v);
+ return gen_const_vec_duplicate (mode, inner);
}
/* Create a MODE vector constant from 4 ints. */