[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH 0/1] TCG Aarch64 ldst 12bit scaled uimm

From: Claudio Fontana
Subject: [Qemu-devel] [PATCH 0/1] TCG Aarch64 ldst 12bit scaled uimm
Date: Tue, 11 Jun 2013 10:11:35 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130509 Thunderbird/17.0.6

Using only the ldst simm9 (unscaled offset) will often result in the
fallback mov immediate + ldst (register offset) to be triggered.

This change implements the ldst uimm12 (scaled offset), which avoids
the expensive fallback in certain conditions: the offset must be
naturally aligned and positive, and the scaled value must be
representable with 12bits.

This patch requires multiple reviewed but not committed yet series
reachable from:

"AArch64 TCG target implementation, git repo"

Claudio Fontana (1):
  tcg/aarch64: implement ldst 12bit scaled uimm offset

 tcg/aarch64/tcg-target.c | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)


reply via email to

[Prev in Thread] Current Thread [Next in Thread]