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target/riscv: add fault-only-first unit stride load

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The unit-stride fault-only-fault load instructions are used to
vectorize loops with data-dependent exit conditions(while loops).
These instructions execute as a regular load except that they
will only take a trap on element 0.

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200701152549.1218-9-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:24:56 +08:00 • committed by Alistair Francis
parent f732560e35
commit 022b4ecf77
4 changed files with 212 additions and 0 deletions
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22
target/riscv/helper.h
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@ -224,3 +224,25 @@ DEF_HELPER_6(vsxe_v_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsxe_v_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsxe_v_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsxe_v_d, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_5(vlbff_v_b, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbff_v_h, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhff_v_h, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlwff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlwff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vleff_v_b, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vleff_v_h, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vleff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vleff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbuff_v_b, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbuff_v_h, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbuff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlbuff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhuff_v_h, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhuff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlhuff_v_d, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlwuff_v_w, void, ptr, ptr, tl, env, i32)
DEF_HELPER_5(vlwuff_v_d, void, ptr, ptr, tl, env, i32)