Pointers that devolve to TCGTemp will tidy things up.
At present, we continue to store indicies in TCGArg.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
tcg/tcg.c | 67 +++++-------------
tcg/tcg.h | 237 +++++++++++++++++++++++++++++++++-----------------------------
2 files changed, 146 insertions(+), 158 deletions(-)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 26931a7..1ca1192 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -492,8 +492,8 @@ static inline TCGTemp *tcg_global_alloc(TCGContext *s)
return ts;
}
-static int tcg_global_reg_new_internal(TCGContext *s, TCGType type,
- TCGReg reg, const char *name)
+static TCGTemp *tcg_global_reg_new_internal(TCGContext *s, TCGType type,
+ TCGReg reg, const char *name)
{
TCGTemp *ts;
@@ -509,47 +509,45 @@ static int tcg_global_reg_new_internal(TCGContext *s,
TCGType type,
ts->name = name;
tcg_regset_set_reg(s->reserved_regs, reg);
- return temp_idx(ts);
+ return ts;
}
void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size)
{
- int idx;
s->frame_start = start;
s->frame_end = start + size;
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_PTR, reg, "_frame");
- s->frame_temp = &s->temps[idx];
+ s->frame_temp = tcg_global_reg_new_internal(s, TCG_TYPE_PTR, reg,
"_frame");
}
TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name)
{
TCGContext *s = &tcg_ctx;
- int idx;
+ TCGTemp *t;
if (tcg_regset_test_reg(s->reserved_regs, reg)) {
tcg_abort();
}
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_I32, reg, name);
- return MAKE_TCGV_I32(idx);
+ t = tcg_global_reg_new_internal(s, TCG_TYPE_I32, reg, name);
+ return (TCGv_i32)t;
}
TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name)
{
TCGContext *s = &tcg_ctx;
- int idx;
+ TCGTemp *t;
if (tcg_regset_test_reg(s->reserved_regs, reg)) {
tcg_abort();
}
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_I64, reg, name);
- return MAKE_TCGV_I64(idx);
+ t = tcg_global_reg_new_internal(s, TCG_TYPE_I64, reg, name);
+ return (TCGv_i64)t;
}
-int tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
- intptr_t offset, const char *name)
+TCGTemp *tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
+ intptr_t offset, const char *name)
{
TCGContext *s = &tcg_ctx;
- TCGTemp *base_ts = &s->temps[GET_TCGV_PTR(base)];
+ TCGTemp *base_ts = &base->impl;
TCGTemp *ts = tcg_global_alloc(s);
int indirect_reg = 0, bigendian = 0;
#ifdef HOST_WORDS_BIGENDIAN
@@ -598,10 +596,10 @@ int tcg_global_mem_new_internal(TCGType type, TCGv_ptr
base,
ts->mem_offset = offset;
ts->name = name;
}
- return temp_idx(ts);
+ return ts;
}
-static int tcg_temp_new_internal(TCGType type, int temp_local)
+TCGTemp *tcg_temp_new_internal(TCGType type, bool temp_local)
{
TCGContext *s = &tcg_ctx;
TCGTemp *ts;
@@ -638,36 +636,18 @@ static int tcg_temp_new_internal(TCGType type, int
temp_local)
ts->temp_allocated = 1;
ts->temp_local = temp_local;
}
- idx = temp_idx(ts);
}
#if defined(CONFIG_DEBUG_TCG)
s->temps_in_use++;
#endif
- return idx;
-}
-
-TCGv_i32 tcg_temp_new_internal_i32(int temp_local)
-{
- int idx;
-
- idx = tcg_temp_new_internal(TCG_TYPE_I32, temp_local);
- return MAKE_TCGV_I32(idx);
-}
-
-TCGv_i64 tcg_temp_new_internal_i64(int temp_local)
-{
- int idx;
-
- idx = tcg_temp_new_internal(TCG_TYPE_I64, temp_local);
- return MAKE_TCGV_I64(idx);
+ return ts;
}
-static void tcg_temp_free_internal(int idx)
+void tcg_temp_free_internal(TCGTemp *ts)
{
TCGContext *s = &tcg_ctx;
- TCGTemp *ts;
- int k;
+ int k, idx = temp_idx(ts);
#if defined(CONFIG_DEBUG_TCG)
s->temps_in_use--;
@@ -677,7 +657,6 @@ static void tcg_temp_free_internal(int idx)
#endif
tcg_debug_assert(idx >= s->nb_globals && idx < s->nb_temps);
- ts = &s->temps[idx];
tcg_debug_assert(ts->temp_allocated != 0);
ts->temp_allocated = 0;
@@ -685,16 +664,6 @@ static void tcg_temp_free_internal(int idx)
set_bit(idx, s->free_temps[k].l);
}
-void tcg_temp_free_i32(TCGv_i32 arg)
-{
- tcg_temp_free_internal(GET_TCGV_I32(arg));
-}
-
-void tcg_temp_free_i64(TCGv_i64 arg)
-{
- tcg_temp_free_internal(GET_TCGV_I64(arg));
-}
-
TCGv_i32 tcg_const_i32(int32_t val)
{
TCGv_i32 t0;
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 018c01c..a5a0412 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -395,6 +395,44 @@ static inline unsigned get_alignment_bits(TCGMemOp memop)
typedef tcg_target_ulong TCGArg;
+typedef enum TCGTempVal {
+ TEMP_VAL_DEAD,
+ TEMP_VAL_REG,
+ TEMP_VAL_MEM,
+ TEMP_VAL_CONST,
+} TCGTempVal;
+
+typedef struct TCGTemp {
+ TCGReg reg:8;
+ TCGTempVal val_type:8;
+ TCGType base_type:8;
+ TCGType type:8;
+ unsigned int fixed_reg:1;
+ unsigned int indirect_reg:1;
+ unsigned int indirect_base:1;
+ unsigned int mem_coherent:1;
+ unsigned int mem_allocated:1;
+ /* If true, the temp is saved across both basic blocks and
+ translation blocks. */
+ unsigned int temp_global:1;
+ /* If true, the temp is saved across basic blocks but dead
+ at the end of translation blocks. If false, the temp is
+ dead at the end of basic blocks. */
+ unsigned int temp_local:1;
+ unsigned int temp_allocated:1;
+
+ tcg_target_long val;
+ struct TCGTemp *mem_base;
+ intptr_t mem_offset;
+ const char *name;
+
+ /* Pass-specific information that can be stored for a temporary.
+ One word worth of integer data, and one pointer to data
+ allocated separately. */
+ uintptr_t state;
+ void *state_ptr;
+} TCGTemp;
+
/* Define type and accessor macros for TCG variables.
TCG variables are the inputs and outputs of TCG ops, as described
@@ -411,25 +449,34 @@ typedef tcg_target_ulong TCGArg;
Users of tcg_gen_* don't need to know about any of the internal
details of these, and should treat them as opaque types.
- You won't be able to look inside them in a debugger either.
Internal implementation details follow:
- Note that there is no definition of the structs TCGv_i32_d etc anywhere.
- This is deliberate, because the values we store in variables of type
- TCGv_i32 are not really pointers-to-structures. They're just small
- integers, but keeping them in pointer types like this means that the
- compiler will complain if you accidentally pass a TCGv_i32 to a
- function which takes a TCGv_i64, and so on. Only the internals of
- TCG need to care about the actual contents of the types, and they always
- box and unbox via the MAKE_TCGV_* and GET_TCGV_* functions.
- Converting to and from intptr_t rather than int reduces the number
- of sign-extension instructions that get implied on 64-bit hosts. */
-
-typedef struct TCGv_i32_d *TCGv_i32;
-typedef struct TCGv_i64_d *TCGv_i64;
-typedef struct TCGv_ptr_d *TCGv_ptr;
+ There is an array of TCGTemp structures which describe each variable.
+ For type checking purposes, we want to distinguish one TCGTemp pointer
+ from another. We do this by creating different structure types
+ (TCGv_i32_d, TCGv_i64_d, TCGv_ptr_d) that wrap TCGTemp or a pair of them.
+ We unwrap these within tcg-op.c when generating opcodes. After that
+ point we only have unpaired TCGTemp structures. */
+
+typedef struct TCGv_i32_d {
+ TCGTemp impl;
+} *TCGv_i32;
+
+typedef struct TCGv_i64_d {
+#if TCG_TARGET_REG_BITS == 32
+ struct TCGv_i32_d lo, hi;
+#else
+ TCGTemp impl;
+#endif
+} *TCGv_i64;
+
+typedef struct TCGv_ptr_d {
+ TCGTemp impl;
+} *TCGv_ptr;
+
typedef TCGv_ptr TCGv_env;
+
#if TARGET_LONG_BITS == 32
#define TCGv TCGv_i32
#elif TARGET_LONG_BITS == 64
@@ -438,53 +485,23 @@ typedef TCGv_ptr TCGv_env;
#error Unhandled TARGET_LONG_BITS value
#endif
-static inline TCGv_i32 QEMU_ARTIFICIAL MAKE_TCGV_I32(intptr_t i)
-{
- return (TCGv_i32)i;
-}
-
-static inline TCGv_i64 QEMU_ARTIFICIAL MAKE_TCGV_I64(intptr_t i)
-{
- return (TCGv_i64)i;
-}
-
-static inline TCGv_ptr QEMU_ARTIFICIAL MAKE_TCGV_PTR(intptr_t i)
-{
- return (TCGv_ptr)i;
-}
-
-static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_I32(TCGv_i32 t)
-{
- return (intptr_t)t;
-}
-
-static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_I64(TCGv_i64 t)
-{
- return (intptr_t)t;
-}
-
-static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_PTR(TCGv_ptr t)
-{
- return (intptr_t)t;
-}
-
#if TCG_TARGET_REG_BITS == 32
-#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
-#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
+#define TCGV_LOW(t) (&(t)->lo)
+#define TCGV_HIGH(t) (&(t)->hi)
#endif
-#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
-#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
-#define TCGV_EQUAL_PTR(a, b) (GET_TCGV_PTR(a) == GET_TCGV_PTR(b))
+#define TCGV_EQUAL_I32(a, b) ((a) == (b))
+#define TCGV_EQUAL_I64(a, b) ((a) == (b))
+#define TCGV_EQUAL_PTR(a, b) ((a) == (b))
/* Dummy definition to avoid compiler warnings. */
-#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
-#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
-#define TCGV_UNUSED_PTR(x) x = MAKE_TCGV_PTR(-1)
+#define TCGV_UNUSED_I32(x) ((x) = NULL)
+#define TCGV_UNUSED_I64(x) ((x) = NULL)
+#define TCGV_UNUSED_PTR(x) ((x) = NULL)
-#define TCGV_IS_UNUSED_I32(x) (GET_TCGV_I32(x) == -1)
-#define TCGV_IS_UNUSED_I64(x) (GET_TCGV_I64(x) == -1)
-#define TCGV_IS_UNUSED_PTR(x) (GET_TCGV_PTR(x) == -1)
+#define TCGV_IS_UNUSED_I32(x) ((x) == NULL)
+#define TCGV_IS_UNUSED_I64(x) ((x) == NULL)
+#define TCGV_IS_UNUSED_PTR(x) ((x) == NULL)
/* call flags */
/* Helper does not read globals (either directly or through an exception). It
@@ -568,44 +585,6 @@ static inline TCGCond tcg_high_cond(TCGCond c)
}
}
-typedef enum TCGTempVal {
- TEMP_VAL_DEAD,
- TEMP_VAL_REG,
- TEMP_VAL_MEM,
- TEMP_VAL_CONST,
-} TCGTempVal;
-
-typedef struct TCGTemp {
- TCGReg reg:8;
- TCGTempVal val_type:8;
- TCGType base_type:8;
- TCGType type:8;
- unsigned int fixed_reg:1;
- unsigned int indirect_reg:1;
- unsigned int indirect_base:1;
- unsigned int mem_coherent:1;
- unsigned int mem_allocated:1;
- /* If true, the temp is saved across both basic blocks and
- translation blocks. */
- unsigned int temp_global:1;
- /* If true, the temp is saved across basic blocks but dead
- at the end of translation blocks. If false, the temp is
- dead at the end of basic blocks. */
- unsigned int temp_local:1;
- unsigned int temp_allocated:1;
-
- tcg_target_long val;
- struct TCGTemp *mem_base;
- intptr_t mem_offset;
- const char *name;
-
- /* Pass-specific information that can be stored for a temporary.
- One word worth of integer data, and one pointer to data
- allocated separately. */
- uintptr_t state;
- void *state_ptr;
-} TCGTemp;
-
typedef struct TCGContext TCGContext;
typedef struct TCGTempSet {
@@ -755,6 +734,36 @@ static inline size_t arg_index(TCGArg a)
return a;
}
+static inline TCGv_i32 QEMU_ARTIFICIAL MAKE_TCGV_I32(TCGArg i)
+{
+ return (TCGv_i32)arg_temp(i);
+}
+
+static inline TCGv_i64 QEMU_ARTIFICIAL MAKE_TCGV_I64(TCGArg i)
+{
+ return (TCGv_i64)arg_temp(i);
+}
+
+static inline TCGv_ptr QEMU_ARTIFICIAL MAKE_TCGV_PTR(TCGArg i)
+{
+ return (TCGv_ptr)arg_temp(i);
+}
+
+static inline TCGArg QEMU_ARTIFICIAL GET_TCGV_I32(TCGv_i32 t)
+{
+ return temp_arg((TCGTemp *)t);
+}
+
+static inline TCGArg QEMU_ARTIFICIAL GET_TCGV_I64(TCGv_i64 t)
+{
+ return temp_arg((TCGTemp *)t);
+}
+
+static inline TCGArg QEMU_ARTIFICIAL GET_TCGV_PTR(TCGv_ptr t)
+{
+ return temp_arg((TCGTemp *)t);
+}
+
static inline void tcg_set_insn_param(int op_idx, int arg, TCGArg v)
{
tcg_ctx.gen_op_buf[op_idx].args[arg] = v;
@@ -807,49 +816,59 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb);
void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size);
-int tcg_global_mem_new_internal(TCGType, TCGv_ptr, intptr_t, const char *);
+TCGTemp *tcg_global_mem_new_internal(TCGType, TCGv_ptr, intptr_t, const char
*);
+TCGTemp *tcg_temp_new_internal(TCGType type, bool temp_local);
+void tcg_temp_free_internal(TCGTemp *ts);
TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name);
TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name);
-TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
-TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
-
-void tcg_temp_free_i32(TCGv_i32 arg);
-void tcg_temp_free_i64(TCGv_i64 arg);
-
static inline TCGv_i32 tcg_global_mem_new_i32(TCGv_ptr reg, intptr_t offset,
const char *name)
{
- int idx = tcg_global_mem_new_internal(TCG_TYPE_I32, reg, offset, name);
- return MAKE_TCGV_I32(idx);
+ TCGTemp *t = tcg_global_mem_new_internal(TCG_TYPE_I32, reg, offset, name);
+ return (TCGv_i32)t;
}
static inline TCGv_i32 tcg_temp_new_i32(void)
{
- return tcg_temp_new_internal_i32(0);
+ TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I32, false);
+ return (TCGv_i32)t;
}
static inline TCGv_i32 tcg_temp_local_new_i32(void)
{
- return tcg_temp_new_internal_i32(1);
+ TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I32, true);
+ return (TCGv_i32)t;
}
static inline TCGv_i64 tcg_global_mem_new_i64(TCGv_ptr reg, intptr_t offset,
const char *name)
{
- int idx = tcg_global_mem_new_internal(TCG_TYPE_I64, reg, offset, name);
- return MAKE_TCGV_I64(idx);
+ TCGTemp *t = tcg_global_mem_new_internal(TCG_TYPE_I64, reg, offset, name);
+ return (TCGv_i64)t;
}
static inline TCGv_i64 tcg_temp_new_i64(void)
{
- return tcg_temp_new_internal_i64(0);
+ TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I64, false);
+ return (TCGv_i64)t;
}
static inline TCGv_i64 tcg_temp_local_new_i64(void)
{
- return tcg_temp_new_internal_i64(1);
+ TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I64, true);
+ return (TCGv_i64)t;
+}
+
+static inline void tcg_temp_free_i32(TCGv_i32 arg)
+{
+ tcg_temp_free_internal((TCGTemp *)arg);
+}
+
+static inline void tcg_temp_free_i64(TCGv_i64 arg)
+{
+ tcg_temp_free_internal((TCGTemp *)arg);
}
#if defined(CONFIG_DEBUG_TCG)
--
2.9.4
