From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: Alistair.Francis@wdc.com
Subject: [Qemu-devel] [PATCH 0/5] tcg: Make bswap support in qemu_ld/st optional
Date: Tue, 20 Nov 2018 13:15:53 +0100 [thread overview]
Message-ID: <20181120121558.7660-1-richard.henderson@linaro.org> (raw)
Having to support bswap in the guest memory operations at times
requires an irritating number of temporaries. Better to allow
the bswap operations to be expanded outside of the memory ops
and let register allocation do its thing.
This is something that I've been planning to do for some time,
to aid i386 and arm32 especially. But I've been prompted again
by the nacent risc-v backend, for which this would be especially
irritating to have to open-code.
Alistair, for convenience I've pushed this to
https://github.com/rth7680/qemu.git tcg-next-for-4.0
r~
Richard Henderson (5):
tcg: Add TCG_TARGET_HAS_MEMORY_BSWAP
tcg/optimize: Optimize bswap
tcg/i386: Set TCG_TARGET_HAS_MEMORY_BSWAP with have_movbe
tcg/aarch64: Set TCG_TARGET_HAS_MEMORY_BSWAP to false
tcg/arm: Set TCG_TARGET_HAS_MEMORY_BSWAP to false
tcg/aarch64/tcg-target.h | 1 +
tcg/arm/tcg-target.h | 1 +
tcg/i386/tcg-target.h | 3 +
tcg/mips/tcg-target.h | 1 +
tcg/ppc/tcg-target.h | 1 +
tcg/s390/tcg-target.h | 1 +
tcg/sparc/tcg-target.h | 1 +
tcg/tci/tcg-target.h | 2 +
tcg/aarch64/tcg-target.inc.c | 63 +++--------
tcg/arm/tcg-target.inc.c | 198 +++++++++--------------------------
tcg/i386/tcg-target.inc.c | 112 +++++++-------------
tcg/optimize.c | 12 +++
tcg/tcg-op.c | 118 ++++++++++++++++++++-
13 files changed, 234 insertions(+), 280 deletions(-)
--
2.17.2
next reply other threads:[~2018-11-20 12:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-20 12:15 Richard Henderson [this message]
2018-11-20 12:15 ` [Qemu-devel] [PATCH 1/5] tcg: Add TCG_TARGET_HAS_MEMORY_BSWAP Richard Henderson
2018-11-20 12:15 ` [Qemu-devel] [PATCH 2/5] tcg/optimize: Optimize bswap Richard Henderson
2018-11-20 12:15 ` [Qemu-devel] [PATCH 3/5] tcg/i386: Set TCG_TARGET_HAS_MEMORY_BSWAP with have_movbe Richard Henderson
2018-11-20 12:15 ` [Qemu-devel] [PATCH 4/5] tcg/aarch64: Set TCG_TARGET_HAS_MEMORY_BSWAP to false Richard Henderson
2018-11-20 12:15 ` [Qemu-devel] [PATCH 5/5] tcg/arm: " Richard Henderson
2018-11-22 1:11 ` [Qemu-devel] [PATCH 0/5] tcg: Make bswap support in qemu_ld/st optional no-reply
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