[PATCH] i386: Roundeven expansion for SSE4.1+
Tejas Joshi
tejasjoshi9673@gmail.com
Wed Jul 24 10:45:00 GMT 2019
Hi.
This is a patch that Uros suggested for roundeven expansion, here.
Thanks for the heads up.
<https://gcc.gnu.org/ml/gcc-patches/2019-07/msg01038.html>
I have rerun the testsuite on the patch, it survives the regression
tests and bootstraps on x86_64-linux-gnu. Note, patch to be applied on
top of
<https://gcc.gnu.org/ml/gcc-patches/2019-06/msg01828.html>
Thanks,
Tejas
gcc/ChangeLog:
2019-07-24 Tejas Joshi <tejasjoshi9673@gmail.com>
* builtins.c (mathfn_built_in_2): Change CASE_MATHFN to
CASE_MATHFN_FLOATN for roundeven.
* config/i386/i386.c (ix86_i387_mode_needed): Add case I387_ROUNDEVEN.
(ix86_mode_needed): Likewise.
(ix86_mode_after): Likewise.
(ix86_mode_entry): Likewise.
(ix86_mode_exit): Likewise.
(ix86_emit_mode_set): Likewise.
(emit_i387_cw_initialization): Add case I387_CW_ROUNDEVEN.
* config/i386/i386.h (ix86_stack_slot) : Add SLOT_CW_ROUNDEVEN.
(ix86_entry): Add I387_ROUNDEVEN.
(avx_u128_state): Add I387_CW_ANY.
* config/i386/i386.md: Define UNSPEC_FRNDINT_ROUNDEVEN.
(define_int_iterator): Likewise.
(define_int_attr): Likewise for rounding_insn, rounding and ROUNDING.
(define_constant): Define ROUND_ROUNDEVEN mode.
(define_attr): Add roundeven mode for i387_cw.
(<rouding_insn><mode>2): Add condition for ROUND_ROUNDEVEN.
* internal-fn.def (ROUNDEVEN): New builtin function.
* optabs.def (roundeven_optab): New optab.
gcc/testsuite/ChangeLog:
2019-07-24 Tejas Joshi <tejasjoshi9673@gmail.com>
* gcc.target/i386/avx-vround-roundeven-1.c: New test.
* gcc.target/i386/avx-vround-roundeven-2.c: New test.
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