Re: [Qemu-devel] [PATCH 0/2] two tcg improvements

[Richard Henderson]

Ping?

Update: The TYPE parameter to tcg_out_mov would be helpful
for the S390 port as well.  The 32-bit LR is 2 bytes, while
the 64-bit LGR is 4 bytes.


r~


On 05/03/2010 04:30 PM, Richard Henderson wrote:
> The first patch allows the x86-64 port to avoid the REX.W prefix
> on moves, by allowing reg-reg moves to be typed just as reg-imm
> moves already are.  This does require trivial changes to each port.
> 
> The second patch fixes an oversight in commit
>   86feb1c860dc38e9c89e787c5210e8191800385e
> whereby I only modified the 32-bit host versions of the inline
> functions and not the 64-bit host versions.  This is visible on
> x86-64 host with arm guest in that we unnecessarily emit some
> MOVSLQ insns instead of plain 32-bit MOV insns.
> 
> 
> r~
> 
> 
> 
> Richard Henderson (2):
>   tcg: Add TYPE parameter to tcg_out_mov.
>   tcg: Use INDEX_op_qemu_ld32 for 32-bit results.
> 
>  tcg/arm/tcg-target.c    |    2 +-
>  tcg/hppa/tcg-target.c   |   38 ++++++++++++++++++------------------
>  tcg/i386/tcg-target.c   |   49 
> ++++++++++++++++++++++++-----------------------
>  tcg/ia64/tcg-target.c   |    3 +-
>  tcg/mips/tcg-target.c   |   28 +++++++++++++-------------
>  tcg/ppc/tcg-target.c    |   48 +++++++++++++++++++++++-----------------------
>  tcg/ppc64/tcg-target.c  |   10 ++++----
>  tcg/s390/tcg-target.c   |    2 +-
>  tcg/sparc/tcg-target.c  |   10 ++++----
>  tcg/tcg-op.h            |    8 +++++++
>  tcg/tcg.c               |   12 +++++-----
>  tcg/x86_64/tcg-target.c |   20 ++++++++++--------
>  12 files changed, 121 insertions(+), 109 deletions(-)
> 
> 
>