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Hexagon (target/hexagon) Move new_value to DisasContext

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The new_value array in the CPUHexagonState is only used for bookkeeping
within the translation of a packet.  With recent changes that eliminate
the need to free TCGv variables, these make more sense to be transient
and kept in DisasContext.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230427230012.3800327-18-tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2023-04-27 16:00:08 -07:00
parent 6aa4f1d15c
commit 4ff5676474
4 changed files with 9 additions and 14 deletions
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1
target/hexagon/cpu.h
View File

@ -89,7 +89,6 @@ typedef struct CPUArchState {
target_ulong stack_start;
uint8_t slot_cancelled;
target_ulong new_value[TOTAL_PER_THREAD_REGS];
target_ulong new_value_usr;
/*

6
target/hexagon/genptr.c
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@ -74,7 +74,11 @@ TCGv get_result_gpr(DisasContext *ctx, int rnum)
if (rnum == HEX_REG_USR) {
return hex_new_value_usr;
} else {
return hex_new_value[rnum];
if (ctx->new_value[rnum] == NULL) {
ctx->new_value[rnum] = tcg_temp_new();
tcg_gen_movi_tl(ctx->new_value[rnum], 0);
}
return ctx->new_value[rnum];
}
} else {
return hex_gpr[rnum];

14
target/hexagon/translate.c
View File

@ -44,7 +44,6 @@ TCGv hex_pred[NUM_PREGS];
TCGv hex_this_PC;
TCGv hex_slot_cancelled;
TCGv hex_branch_taken;
TCGv hex_new_value[TOTAL_PER_THREAD_REGS];
TCGv hex_new_value_usr;
TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
TCGv hex_new_pred_value[NUM_PREGS];
@ -513,6 +512,9 @@ static void gen_start_packet(DisasContext *ctx)
}
ctx->s1_store_processed = false;
ctx->pre_commit = true;
for (i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
ctx->new_value[i] = NULL;
}
analyze_packet(ctx);
@ -1159,7 +1161,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int *max_insns,
}
#define NAME_LEN 64
static char new_value_names[TOTAL_PER_THREAD_REGS][NAME_LEN];
static char reg_written_names[TOTAL_PER_THREAD_REGS][NAME_LEN];
static char new_pred_value_names[NUM_PREGS][NAME_LEN];
static char store_addr_names[STORES_MAX][NAME_LEN];
@ -1181,15 +1182,6 @@ void hexagon_translate_init(void)
offsetof(CPUHexagonState, gpr[i]),
hexagon_regnames[i]);
if (i == HEX_REG_USR) {
hex_new_value[i] = NULL;
} else {
snprintf(new_value_names[i], NAME_LEN, "new_%s", hexagon_regnames[i]);
hex_new_value[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, new_value[i]),
new_value_names[i]);
}
if (HEX_DEBUG) {
snprintf(reg_written_names[i], NAME_LEN, "reg_written_%s",
hexagon_regnames[i]);

2
target/hexagon/translate.h
View File

@ -69,6 +69,7 @@ typedef struct DisasContext {
bool need_pkt_has_store_s1;
bool short_circuit;
bool has_hvx_helper;
TCGv new_value[TOTAL_PER_THREAD_REGS];
} DisasContext;
static inline void ctx_log_pred_write(DisasContext *ctx, int pnum)
@ -190,7 +191,6 @@ extern TCGv hex_pred[NUM_PREGS];
extern TCGv hex_this_PC;
extern TCGv hex_slot_cancelled;
extern TCGv hex_branch_taken;
extern TCGv hex_new_value[TOTAL_PER_THREAD_REGS];
extern TCGv hex_new_value_usr;
extern TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
extern TCGv hex_new_pred_value[NUM_PREGS];