diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-03-29 18:55:52 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-01-13 08:39:08 -1000 |
| commit | c0522136adf550c7a0ef7c0755c1f9d1560d2757 (patch) | |
| tree | 90372af801dd6a822e7be60b00a334e91f5d5845 /include/tcg | |
| parent | 54795544e4cfb2fa198f7ca244b5ea9eaad322d4 (diff) | |
tcg: Introduce TYPE_CONST temporaries
These will hold a single constant for the duration of the TB.
They are hashed, so that each value has one temp across the TB.
Not used yet, this is all infrastructure.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/tcg')
| -rw-r--r-- | include/tcg/tcg.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index e7adc7e265..eeeb70ad43 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -492,6 +492,8 @@ typedef enum TCGTempKind { TEMP_GLOBAL, /* Temp is in a fixed register. */ TEMP_FIXED, + /* Temp is a fixed constant. */ + TEMP_CONST, } TCGTempKind; typedef struct TCGTemp { @@ -665,6 +667,7 @@ struct TCGContext { QSIMPLEQ_HEAD(, TCGOp) plugin_ops; #endif + GHashTable *const_table[TCG_TYPE_COUNT]; TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ @@ -681,7 +684,7 @@ struct TCGContext { static inline bool temp_readonly(TCGTemp *ts) { - return ts->kind == TEMP_FIXED; + return ts->kind >= TEMP_FIXED; } extern TCGContext tcg_init_ctx; @@ -1079,6 +1082,7 @@ TCGOp *tcg_op_insert_after(TCGContext *s, TCGOp *op, TCGOpcode opc); void tcg_optimize(TCGContext *s); +/* Allocate a new temporary and initialize it with a constant. */ TCGv_i32 tcg_const_i32(int32_t val); TCGv_i64 tcg_const_i64(int64_t val); TCGv_i32 tcg_const_local_i32(int32_t val); @@ -1088,6 +1092,24 @@ TCGv_vec tcg_const_ones_vec(TCGType); TCGv_vec tcg_const_zeros_vec_matching(TCGv_vec); TCGv_vec tcg_const_ones_vec_matching(TCGv_vec); +/* + * Locate or create a read-only temporary that is a constant. + * This kind of temporary need not and should not be freed. + */ +TCGTemp *tcg_constant_internal(TCGType type, int64_t val); + +static inline TCGv_i32 tcg_constant_i32(int32_t val) +{ + return temp_tcgv_i32(tcg_constant_internal(TCG_TYPE_I32, val)); +} + +static inline TCGv_i64 tcg_constant_i64(int64_t val) +{ + return temp_tcgv_i64(tcg_constant_internal(TCG_TYPE_I64, val)); +} + +TCGv_vec tcg_constant_vec(TCGType type, unsigned vece, int64_t val); + #if UINTPTR_MAX == UINT32_MAX # define tcg_const_ptr(x) ((TCGv_ptr)tcg_const_i32((intptr_t)(x))) # define tcg_const_local_ptr(x) ((TCGv_ptr)tcg_const_local_i32((intptr_t)(x))) |