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Re: [Qemu-devel] [PATCH v2 0/5] target/sh4: misc FPU fixes and optimizat


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH v2 0/5] target/sh4: misc FPU fixes and optimizations
Date: Mon, 3 Jul 2017 14:36:44 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 07/02/2017 01:28 PM, Aurelien Jarno wrote:
This patchset should fix the bug#1701821 reported by Bruno Haible,
which makes the gnulib testsuite to fail for single precision libm
tests or for tests relying on unordered comparisons.

It also fixes an inversion of cause and flag bits in the FPSCR register,
which is unrelated with the reported bug. It also improves a bit the fneg
and fcmp instructions.

Aurelien Jarno (5):
   target/sh4: do not check for PR bit for fabs instruction
   target/sh4: fix FPU unorderered compare
   target/sh4: fix FPSCR cause vs flag inversion
   target/sh4: do not use a helper to implement fneg
   target/sh4: return result of fcmp using TCG

  target/sh4/helper.h    | 11 +++-----
  target/sh4/op_helper.c | 71 ++++++++++++++++----------------------------------
  target/sh4/translate.c | 30 ++++++++-------------
  3 files changed, 37 insertions(+), 75 deletions(-)


Reviewed-by: Richard Henderson <address@hidden>


r~



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