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[v2,29/36] tcg: Add TCG_CALL_RET_BY_VEC

Message ID 20221021071549.2398137-30-richard.henderson@linaro.org
State New
Headers show
Series tcg: Support for Int128 with helpers | expand

Commit Message

Richard Henderson Oct. 21, 2022, 7:15 a.m. UTC 
This will be used by _WIN64 to return i128.  Not yet used,
because allocation is not yet enabled.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tcg-internal.h |  1 +
 tcg/tcg.c          | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
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Patch

diff --git a/tcg/tcg-internal.h b/tcg/tcg-internal.h
index 1fe7bd7d5d..44ef51ca30 100644
--- a/tcg/tcg-internal.h
+++ b/tcg/tcg-internal.h
@@ -38,6 +38,7 @@  typedef enum {
     TCG_CALL_RET_NORMAL,         /* by registers */
     TCG_CALL_RET_NORMAL_4,       /* for i128, by 4 registers */
     TCG_CALL_RET_BY_REF,         /* for i128, by reference as first arg */
+    TCG_CALL_RET_BY_VEC,         /* for i128, by vector register */
 } TCGCallReturnKind;
 
 typedef enum {
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 25dc3c9f8f..9ec5b85f44 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -768,6 +768,8 @@  static void init_call_layout(TCGHelperInfo *info)
                 cum.reg_slot = 1;
             }
             break;
+        case TCG_CALL_RET_BY_VEC:
+            break;
         default:
             g_assert_not_reached();
         }
@@ -4685,6 +4687,21 @@  static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op)
         }
         break;
 
+    case TCG_CALL_RET_BY_VEC:
+        {
+            TCGTemp *ts = arg_temp(op->args[0]);
+
+            tcg_debug_assert(ts->type == TCG_TYPE_I128);
+            if (!ts->mem_allocated) {
+                temp_allocate_frame(s, ts);
+            }
+            tcg_out_st(s, TCG_TYPE_V128,
+                       tcg_target_call_oarg_reg(TCG_CALL_RET_BY_VEC, 0),
+                       ts->mem_base->reg, ts->mem_offset + i * 4);
+            ts->val_type = TEMP_VAL_MEM;
+        }
+        break;
+
     default:
         g_assert_not_reached();
     }