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RE: [PATCH][GCC][AArch64] optimize float immediate moves (1 /4) - infrastructure.


Hi Bin,

> Hi,
> I saw below failure after svn+ssh://gcc.gnu.org/svn/gcc/trunk@250672
> 
> FAIL: gcc.target/aarch64/advsimd-intrinsics/vcvt_high_1.c   -O1
> (internal compiler error)

This should be fixed by r 250766

Cheers,
Tamar

> 
> Regression in patch updates?
> 
> Thanks,
> bin
> >
> > OK for trunk?
> >
> > Thanks,
> > Tamar
> >
> >
> > gcc/
> > 2017-06-07  Tamar Christina  <tamar.christina@arm.com>
> >
> >         * config/aarch64/aarch64.c
> >         (aarch64_simd_container_mode): Add prototype.
> >         (aarch64_expand_mov_immediate): Add HI support.
> >         (aarch64_reinterpret_float_as_int, aarch64_float_const_rtx_p: New.
> >         (aarch64_can_const_movi_rtx_p): New.
> >         (aarch64_preferred_reload_class):
> >         Remove restrictions of using FP registers for certain SIMD operations.
> >         (aarch64_rtx_costs): Added new cost for CONST_DOUBLE moves.
> >         (aarch64_valid_floating_const): Add integer move validation.
> >         (aarch64_simd_imm_scalar_p): Remove.
> >         (aarch64_output_scalar_simd_mov_immediate): Generalize function.
> >         (aarch64_legitimate_constant_p): Expand list of supported cases.
> >         * config/aarch64/aarch64-protos.h
> >         (aarch64_float_const_rtx_p, aarch64_can_const_movi_rtx_p): New.
> >         (aarch64_reinterpret_float_as_int): New.
> >         (aarch64_simd_imm_scalar_p): Remove.
> >         * config/aarch64/predicates.md (aarch64_reg_or_fp_float): New.
> >         * config/aarch64/constraints.md (Uvi): New.
> >         (Dd): Split into Ds and new Dd.
> >         * config/aarch64/aarch64.md (*movsi_aarch64):
> >         Add SIMD mov case.
> >         (*movdi_aarch64): Add SIMD mov case.

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