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authorLIU Zhiwei <zhiwei_liu@c-sky.com>2020-07-01 23:25:48 +0800
committerAlistair Francis <alistair.francis@wdc.com>2020-07-02 09:19:34 -0700
commit31bf42a26cf8b1e02f27acd302ee0ef14e877682 (patch)
treee3ba115eafd1b603a2cea8af4402330b6f38c6de /target/riscv/vector_helper.c
parente4b83d5c0928507cc27a0f613675b117db9993e4 (diff)
target/riscv: vector compress instruction
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200701152549.1218-61-zhiwei_liu@c-sky.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv/vector_helper.c')
-rw-r--r--target/riscv/vector_helper.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 3179b1faef..39f44d1029 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4871,3 +4871,29 @@ GEN_VEXT_VRGATHER_VX(vrgather_vx_b, uint8_t, H1, clearb)
GEN_VEXT_VRGATHER_VX(vrgather_vx_h, uint16_t, H2, clearh)
GEN_VEXT_VRGATHER_VX(vrgather_vx_w, uint32_t, H4, clearl)
GEN_VEXT_VRGATHER_VX(vrgather_vx_d, uint64_t, H8, clearq)
+
+/* Vector Compress Instruction */
+#define GEN_VEXT_VCOMPRESS_VM(NAME, ETYPE, H, CLEAR_FN) \
+void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \
+ CPURISCVState *env, uint32_t desc) \
+{ \
+ uint32_t mlen = vext_mlen(desc); \
+ uint32_t vlmax = env_archcpu(env)->cfg.vlen / mlen; \
+ uint32_t vl = env->vl; \
+ uint32_t num = 0, i; \
+ \
+ for (i = 0; i < vl; i++) { \
+ if (!vext_elem_mask(vs1, mlen, i)) { \
+ continue; \
+ } \
+ *((ETYPE *)vd + H(num)) = *((ETYPE *)vs2 + H(i)); \
+ num++; \
+ } \
+ CLEAR_FN(vd, num, num * sizeof(ETYPE), vlmax * sizeof(ETYPE)); \
+}
+
+/* Compress into vd elements of vs2 where vs1 is enabled */
+GEN_VEXT_VCOMPRESS_VM(vcompress_vm_b, uint8_t, H1, clearb)
+GEN_VEXT_VCOMPRESS_VM(vcompress_vm_h, uint16_t, H2, clearh)
+GEN_VEXT_VCOMPRESS_VM(vcompress_vm_w, uint32_t, H4, clearl)
+GEN_VEXT_VCOMPRESS_VM(vcompress_vm_d, uint64_t, H8, clearq)