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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [PATCH v5 4/6] tcg/sparc: Use the constant pool for 64-bit constants
Date: Sun,  6 Feb 2022 21:31:36 +1100	[thread overview]
Message-ID: <20220206103138.36105-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20220206103138.36105-1-richard.henderson@linaro.org>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/sparc/tcg-target.c.inc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tcg/sparc/tcg-target.c.inc b/tcg/sparc/tcg-target.c.inc
index f3043e6833..074fb25af2 100644
--- a/tcg/sparc/tcg-target.c.inc
+++ b/tcg/sparc/tcg-target.c.inc
@@ -336,6 +336,13 @@ static bool patch_reloc(tcg_insn_unit *src_rw, int type,
         insn &= ~INSN_OFF19(-1);
         insn |= INSN_OFF19(pcrel);
         break;
+    case R_SPARC_13:
+        if (!check_fit_ptr(value, 13)) {
+            return false;
+        }
+        insn &= ~INSN_IMM13(-1);
+        insn |= INSN_IMM13(value);
+        break;
     default:
         g_assert_not_reached();
     }
@@ -473,6 +480,14 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
         return;
     }
 
+    /* Use the constant pool, if possible. */
+    if (!in_prologue && USE_REG_TB) {
+        new_pool_label(s, arg, R_SPARC_13, s->code_ptr,
+                       tcg_tbrel_diff(s, NULL));
+        tcg_out32(s, LDX | INSN_RD(ret) | INSN_RS1(TCG_REG_TB));
+        return;
+    }
+
     /* A 64-bit constant decomposed into 2 32-bit pieces.  */
     if (check_fit_i32(lo, 13)) {
         hi = (arg - lo) >> 32;
-- 
2.25.1



  parent reply	other threads:[~2022-02-06 10:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-06 10:31 [PATCH v5 0/6] tcg/sparc: Unaligned access for user-only Richard Henderson
2022-02-06 10:31 ` [PATCH v5 1/6] tcg/sparc: Add scratch argument to tcg_out_movi_int Richard Henderson
2022-02-07 17:59   ` Peter Maydell
2022-02-07 21:48     ` Richard Henderson
2022-02-06 10:31 ` [PATCH v5 2/6] tcg/sparc: Improve code gen for shifted 32-bit constants Richard Henderson
2022-02-06 10:31 ` [PATCH v5 3/6] tcg/sparc: Convert patch_reloc to return bool Richard Henderson
2022-02-06 10:45   ` Peter Maydell
2022-02-06 10:31 ` Richard Henderson [this message]
2022-02-06 10:31 ` [PATCH v5 5/6] tcg/sparc: Add tcg_out_jmpl_const for better tail calls Richard Henderson
2022-02-06 10:31 ` [PATCH v5 6/6] tcg/sparc: Support unaligned access for user-only Richard Henderson
2022-02-07 18:30   ` Peter Maydell

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