Re: [PATCH 18/18] tcg/loongarch64: Enable v256 with LASX

[gaosong]

在 2024/5/28 上午5:19, Richard Henderson 写道:

Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
  tcg/loongarch64/tcg-target.h     |  2 +-
  tcg/loongarch64/tcg-target.c.inc | 11 ++++++++---
  2 files changed, 9 insertions(+), 4 deletions(-)

Reviewed-by: Song Gao <gaos...@loongson.cn>

Thanks.
Song Gao

diff --git a/tcg/loongarch64/tcg-target.h b/tcg/loongarch64/tcg-target.h
index 990bad1d51..58bd7d258e 100644
--- a/tcg/loongarch64/tcg-target.h
+++ b/tcg/loongarch64/tcg-target.h
@@ -173,7 +173,7 @@ typedef enum {

#define TCG_TARGET_HAS_v64 (cpuinfo & CPUINFO_LSX)

  #define TCG_TARGET_HAS_v128             (cpuinfo & CPUINFO_LSX)
-#define TCG_TARGET_HAS_v256             0
+#define TCG_TARGET_HAS_v256             (cpuinfo & CPUINFO_LASX)

#define TCG_TARGET_HAS_not_vec 1

  #define TCG_TARGET_HAS_neg_vec          1
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index e2b5aad5e3..0b41b807e3 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -2484,9 +2484,14 @@ static void tcg_target_init(TCGContext *s)
      tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S8);
      tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S9);

- if (cpuinfo & CPUINFO_LSX) {

-        tcg_target_available_regs[TCG_TYPE_V64] = ALL_VECTOR_REGS;
-        tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS;
+    if (cpuinfo & (CPUINFO_LSX | CPUINFO_LASX)) {
+        if (cpuinfo & CPUINFO_LSX) {
+            tcg_target_available_regs[TCG_TYPE_V64] = ALL_VECTOR_REGS;
+            tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS;
+        }
+        if (cpuinfo & CPUINFO_LASX) {
+            tcg_target_available_regs[TCG_TYPE_V256] = ALL_VECTOR_REGS;
+        }
          tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V24);
          tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V25);
          tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V26);