From: Richard Henderson <rth@twiddle.net>
To: qemu-devel@nongnu.org
Cc: aurelien@aurel32.net
Subject: [Qemu-devel] [PATCH v2 3/8] tcg-arm: Use strd for tcg_out_arg_reg64
Date: Fri, 30 Aug 2013 10:47:12 -0700 [thread overview]
Message-ID: <1377884837-6581-4-git-send-email-rth@twiddle.net> (raw)
In-Reply-To: <1377884837-6581-1-git-send-email-rth@twiddle.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
tcg/arm/tcg-target.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index ba5fc43..17e256a 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1148,9 +1148,16 @@ static TCGReg tcg_out_arg_reg64(TCGContext *s, TCGReg argreg,
if (argreg & 1) {
argreg++;
}
- argreg = tcg_out_arg_reg32(s, argreg, arglo);
- argreg = tcg_out_arg_reg32(s, argreg, arghi);
- return argreg;
+ if (use_armv6_instructions && argreg >= 4
+ && (arglo & 1) == 0 && arghi == arglo + 1) {
+ tcg_out_strd_8(s, COND_AL, arglo,
+ TCG_REG_CALL_STACK, (argreg - 4) * 4);
+ return argreg + 2;
+ } else {
+ argreg = tcg_out_arg_reg32(s, argreg, arglo);
+ argreg = tcg_out_arg_reg32(s, argreg, arghi);
+ return argreg;
+ }
}
#define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
--
1.8.1.4
next prev parent reply other threads:[~2013-08-30 17:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-30 17:47 [Qemu-devel] [PATCH v2 0/8] tcg-arm ldst improvements Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 1/8] tcg-arm: Use ldrd/strd for appropriate qemu_ld/st64 Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 2/8] tcg-arm: Rearrange slow-path qemu_ld/st Richard Henderson
2013-08-30 17:47 ` Richard Henderson [this message]
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 4/8] tcg-arm: Use QEMU_BUILD_BUG_ON to verify constraints on tlb Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 5/8] tcg-arm: Move load of tlb addend into tcg_out_tlb_read Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 6/8] tcg-arm: Return register containing tlb addend Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 7/8] tcg-arm: Remove restriction on qemu_ld output register Richard Henderson
2013-08-30 17:47 ` [Qemu-devel] [PATCH v2 8/8] tcg-arm: Move the tlb addend load earlier Richard Henderson
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