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
next prev 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
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