diff mbox series

[30/31] tcg: Add temp allocation for TCGv_i128

Message ID 20221020115242.2301066-31-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: Support for Int128 with helpers | expand

Commit Message

Richard Henderson Oct. 20, 2022, 11:52 a.m. UTC 
This enables allocation of i128.  The type is not yet
usable, as we have not yet added data movement ops.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/tcg/tcg.h    | 32 ++++++++++++++++++++++++++++++++
 tcg/tci/tcg-target.h |  3 +++
 tcg/tcg.c            | 32 +++++++++++++++++++++++++++-----
 3 files changed, 62 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h
index e80c78b2e8..185408935b 100644
--- a/include/tcg/tcg.h
+++ b/include/tcg/tcg.h
@@ -695,6 +695,11 @@  static inline TCGTemp *tcgv_i64_temp(TCGv_i64 v)
     return tcgv_i32_temp((TCGv_i32)v);
 }
 
+static inline TCGTemp *tcgv_i128_temp(TCGv_i128 v)
+{
+    return tcgv_i32_temp((TCGv_i32)v);
+}
+
 static inline TCGTemp *tcgv_ptr_temp(TCGv_ptr v)
 {
     return tcgv_i32_temp((TCGv_i32)v);
@@ -715,6 +720,11 @@  static inline TCGArg tcgv_i64_arg(TCGv_i64 v)
     return temp_arg(tcgv_i64_temp(v));
 }
 
+static inline TCGArg tcgv_i128_arg(TCGv_i128 v)
+{
+    return temp_arg(tcgv_i128_temp(v));
+}
+
 static inline TCGArg tcgv_ptr_arg(TCGv_ptr v)
 {
     return temp_arg(tcgv_ptr_temp(v));
@@ -736,6 +746,11 @@  static inline TCGv_i64 temp_tcgv_i64(TCGTemp *t)
     return (TCGv_i64)temp_tcgv_i32(t);
 }
 
+static inline TCGv_i128 temp_tcgv_i128(TCGTemp *t)
+{
+    return (TCGv_i128)temp_tcgv_i32(t);
+}
+
 static inline TCGv_ptr temp_tcgv_ptr(TCGTemp *t)
 {
     return (TCGv_ptr)temp_tcgv_i32(t);
@@ -858,6 +873,11 @@  static inline void tcg_temp_free_i64(TCGv_i64 arg)
     tcg_temp_free_internal(tcgv_i64_temp(arg));
 }
 
+static inline void tcg_temp_free_i128(TCGv_i128 arg)
+{
+    tcg_temp_free_internal(tcgv_i128_temp(arg));
+}
+
 static inline void tcg_temp_free_ptr(TCGv_ptr arg)
 {
     tcg_temp_free_internal(tcgv_ptr_temp(arg));
@@ -906,6 +926,18 @@  static inline TCGv_i64 tcg_temp_local_new_i64(void)
     return temp_tcgv_i64(t);
 }
 
+static inline TCGv_i128 tcg_temp_new_i128(void)
+{
+    TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I128, false);
+    return temp_tcgv_i128(t);
+}
+
+static inline TCGv_i128 tcg_temp_local_new_i128(void)
+{
+    TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I128, true);
+    return temp_tcgv_i128(t);
+}
+
 static inline TCGv_ptr tcg_global_mem_new_ptr(TCGv_ptr reg, intptr_t offset,
                                               const char *name)
 {
diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
index 94ec541b4e..9d569c9e04 100644
--- a/tcg/tci/tcg-target.h
+++ b/tcg/tci/tcg-target.h
@@ -161,10 +161,13 @@  typedef enum {
 #if TCG_TARGET_REG_BITS == 32
 # define TCG_TARGET_CALL_ARG_I32        TCG_CALL_ARG_EVEN
 # define TCG_TARGET_CALL_ARG_I64        TCG_CALL_ARG_EVEN
+# define TCG_TARGET_CALL_ARG_I128       TCG_CALL_ARG_EVEN
 #else
 # define TCG_TARGET_CALL_ARG_I32        TCG_CALL_ARG_NORMAL
 # define TCG_TARGET_CALL_ARG_I64        TCG_CALL_ARG_NORMAL
+# define TCG_TARGET_CALL_ARG_I128       TCG_CALL_ARG_NORMAL
 #endif
+#define TCG_TARGET_CALL_RET_I128        TCG_CALL_RET_NORMAL
 
 #define HAVE_TCG_QEMU_TB_EXEC
 #define TCG_TARGET_NEED_POOL_LABELS
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 352175afcd..c6e856a2cc 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1250,18 +1250,39 @@  TCGTemp *tcg_temp_new_internal(TCGType type, bool temp_local)
         tcg_debug_assert(ts->base_type == type);
         tcg_debug_assert(ts->kind == kind);
     } else {
+        bool want_pair = false;
+        TCGType half = type;
+
+        switch (type) {
+        case TCG_TYPE_I32:
+        case TCG_TYPE_V64:
+        case TCG_TYPE_V128:
+        case TCG_TYPE_V256:
+            break;
+        case TCG_TYPE_I64:
+            half = TCG_TYPE_I32;
+            want_pair = TCG_TARGET_REG_BITS == 32;
+            break;
+        case TCG_TYPE_I128:
+            half = TCG_TYPE_I64;
+            want_pair = TCG_TARGET_REG_BITS == 64;
+            break;
+        default:
+            g_assert_not_reached();
+        }
+
         ts = tcg_temp_alloc(s);
-        if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) {
+        if (want_pair) {
             TCGTemp *ts2 = tcg_temp_alloc(s);
 
             ts->base_type = type;
-            ts->type = TCG_TYPE_I32;
+            ts->type = half;
             ts->temp_allocated = 1;
             ts->kind = kind;
 
             tcg_debug_assert(ts2 == ts + 1);
-            ts2->base_type = TCG_TYPE_I64;
-            ts2->type = TCG_TYPE_I32;
+            ts2->base_type = type;
+            ts2->type = half;
             ts2->temp_allocated = 1;
             ts2->temp_subindex = 1;
             ts2->kind = kind;
@@ -2773,7 +2794,7 @@  static void la_cross_call(TCGContext *s, int nt)
 
     for (i = 0; i < nt; i++) {
         TCGTemp *ts = &s->temps[i];
-        if (!(ts->state & TS_DEAD)) {
+        if (ts->type != TCG_TYPE_I128 && !(ts->state & TS_DEAD)) {
             TCGRegSet *pset = la_temp_pref(ts);
             TCGRegSet set = *pset;
 
@@ -3404,6 +3425,7 @@  static void temp_allocate_frame(TCGContext *s, TCGTemp *ts)
     case TCG_TYPE_V64:
         align = 8;
         break;
+    case TCG_TYPE_I128:
     case TCG_TYPE_V128:
     case TCG_TYPE_V256:
         /* Note that we do not require aligned storage for V256. */