qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: alex.bennee@linaro.org
Subject: [PATCH v4 3/5] tcg/sparc: Use the constant pool for 64-bit constants
Date: Fri,  4 Feb 2022 18:00:09 +1100	[thread overview]
Message-ID: <20220204070011.573941-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20220204070011.573941-1-richard.henderson@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 6349f750cc..47bdf314a0 100644
--- a/tcg/sparc/tcg-target.c.inc
+++ b/tcg/sparc/tcg-target.c.inc
@@ -332,6 +332,13 @@ 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();
     }
@@ -469,6 +476,14 @@ 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:[~2022-02-04  7:49 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-04  7:00 [PATCH v4 0/5] tcg/sparc: Unaligned access for user-only Richard Henderson
2022-02-04  7:00 ` [PATCH v4 1/5] tcg/sparc: Add scratch argument to tcg_out_movi_int Richard Henderson
2022-02-04 17:35   ` Peter Maydell
2022-02-04 20:42     ` Richard Henderson
2022-02-04  7:00 ` [PATCH v4 2/5] tcg/sparc: Improve code gen for shifted 32-bit constants Richard Henderson
2022-02-04  7:56   ` Philippe Mathieu-Daudé via
2022-02-04 17:39   ` Peter Maydell
2022-02-04  7:00 ` Richard Henderson [this message]
2022-02-04 18:18   ` [PATCH v4 3/5] tcg/sparc: Use the constant pool for 64-bit constants Peter Maydell
2022-02-04 20:41     ` Richard Henderson
2022-02-04 22:20       ` Peter Maydell
2022-02-04  7:00 ` [PATCH v4 4/5] tcg/sparc: Add tcg_out_jmpl_const for better tail calls Richard Henderson
2022-02-04 18:34   ` Peter Maydell
2022-02-04 20:44     ` Richard Henderson
2022-02-04  7:00 ` [PATCH v4 5/5] tcg/sparc: Support unaligned access for user-only Richard Henderson
2022-02-04 19:07   ` Peter Maydell
2022-02-04 20:55     ` Richard Henderson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220204070011.573941-4-richard.henderson@linaro.org \
    --to=richard.henderson@linaro.org \
    --cc=alex.bennee@linaro.org \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).