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Re: [Qemu-devel] [PATCH RFC 4/9] tcg/optimize: add optimizations for ext


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH RFC 4/9] tcg/optimize: add optimizations for ext_i32_i64 and extu_i32_i64 ops
Date: Fri, 17 Jul 2015 07:23:58 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1

On 07/15/2015 12:03 PM, Aurelien Jarno wrote:
They behave the same as ext32s_i64 and ext32u_i64 from the constant
folding and zero propagation point of view, except that they can't
be replaced by a mov, so we don't compute the affected value.

Cc: Paolo Bonzini<address@hidden>
Cc: Richard Henderson<address@hidden>
Signed-off-by: Aurelien Jarno<address@hidden>
---
  tcg/optimize.c | 10 ++++++++++
  1 file changed, 10 insertions(+)

Reviewed-by: Richard Henderson <address@hidden>


r~



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