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target/arm: Push tcg_rnd into handle_shri_with_rndacc 

We always pass the same value for round; compute it
within common code.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-09-11 19:41:05 -07:00 committed by Peter Maydell
parent 6ed32dd495
commit c6bc6966ad
1 changed files with 6 additions and 26 deletions
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32
target/arm/tcg/translate-a64.c
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@ -9205,11 +9205,10 @@ static void disas_data_proc_fp(DisasContext *s, uint32_t insn)
* the vector and scalar code.
*/
static void handle_shri_with_rndacc(TCGv_i64 tcg_res, TCGv_i64 tcg_src,
TCGv_i64 tcg_rnd, bool accumulate,
bool round, bool accumulate,
bool is_u, int size, int shift)
{
bool extended_result = false;
bool round = tcg_rnd != NULL;
int ext_lshift = 0;
TCGv_i64 tcg_src_hi;
@ -9227,6 +9226,7 @@ static void handle_shri_with_rndacc(TCGv_i64 tcg_res, TCGv_i64 tcg_src,
/* Deal with the rounding step */
if (round) {
TCGv_i64 tcg_rnd = tcg_constant_i64(1ull << (shift - 1));
if (extended_result) {
TCGv_i64 tcg_zero = tcg_constant_i64(0);
if (!is_u) {
@ -9294,7 +9294,6 @@ static void handle_scalar_simd_shri(DisasContext *s,
bool insert = false;
TCGv_i64 tcg_rn;
TCGv_i64 tcg_rd;
TCGv_i64 tcg_round;
if (!extract32(immh, 3, 1)) {
unallocated_encoding(s);
@ -9320,12 +9319,6 @@ static void handle_scalar_simd_shri(DisasContext *s,
break;
}
if (round) {
tcg_round = tcg_constant_i64(1ULL << (shift - 1));
} else {
tcg_round = NULL;
}
tcg_rn = read_fp_dreg(s, rn);
tcg_rd = (accumulate || insert) ? read_fp_dreg(s, rd) : tcg_temp_new_i64();
@ -9339,7 +9332,7 @@ static void handle_scalar_simd_shri(DisasContext *s,
tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_rn, 0, esize - shift);
}
} else {
handle_shri_with_rndacc(tcg_rd, tcg_rn, tcg_round,
handle_shri_with_rndacc(tcg_rd, tcg_rn, round,
accumulate, is_u, size, shift);
}
@ -9392,7 +9385,7 @@ static void handle_vec_simd_sqshrn(DisasContext *s, bool is_scalar, bool is_q,
int elements = is_scalar ? 1 : (64 / esize);
bool round = extract32(opcode, 0, 1);
MemOp ldop = (size + 1) | (is_u_shift ? 0 : MO_SIGN);
TCGv_i64 tcg_rn, tcg_rd, tcg_round;
TCGv_i64 tcg_rn, tcg_rd;
TCGv_i32 tcg_rd_narrowed;
TCGv_i64 tcg_final;
@ -9437,15 +9430,9 @@ static void handle_vec_simd_sqshrn(DisasContext *s, bool is_scalar, bool is_q,
tcg_rd_narrowed = tcg_temp_new_i32();
tcg_final = tcg_temp_new_i64();
if (round) {
tcg_round = tcg_constant_i64(1ULL << (shift - 1));
} else {
tcg_round = NULL;
}
for (i = 0; i < elements; i++) {
read_vec_element(s, tcg_rn, rn, i, ldop);
handle_shri_with_rndacc(tcg_rd, tcg_rn, tcg_round,
handle_shri_with_rndacc(tcg_rd, tcg_rn, round,
false, is_u_shift, size+1, shift);
narrowfn(tcg_rd_narrowed, tcg_env, tcg_rd);
tcg_gen_extu_i32_i64(tcg_rd, tcg_rd_narrowed);
@ -10495,7 +10482,6 @@ static void handle_vec_simd_shrn(DisasContext *s, bool is_q,
int shift = (2 * esize) - immhb;
bool round = extract32(opcode, 0, 1);
TCGv_i64 tcg_rn, tcg_rd, tcg_final;
TCGv_i64 tcg_round;
int i;
if (extract32(immh, 3, 1)) {
@ -10512,15 +10498,9 @@ static void handle_vec_simd_shrn(DisasContext *s, bool is_q,
tcg_final = tcg_temp_new_i64();
read_vec_element(s, tcg_final, rd, is_q ? 1 : 0, MO_64);
if (round) {
tcg_round = tcg_constant_i64(1ULL << (shift - 1));
} else {
tcg_round = NULL;
}
for (i = 0; i < elements; i++) {
read_vec_element(s, tcg_rn, rn, i, size+1);
handle_shri_with_rndacc(tcg_rd, tcg_rn, tcg_round,
handle_shri_with_rndacc(tcg_rd, tcg_rn, round,
false, true, size+1, shift);
tcg_gen_deposit_i64(tcg_final, tcg_final, tcg_rd, esize * i, esize);