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Re: [Qemu-devel] [PATCH] softfloat: Handle float_muladd_negate_c when pr
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From: |
Richard Sandiford |
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Subject: |
Re: [Qemu-devel] [PATCH] softfloat: Handle float_muladd_negate_c when product is zero |
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Date: |
Tue, 22 Jan 2013 17:14:00 +0000 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) |
Richard Sandiford <address@hidden> writes:
> BTW, I'm not sure it's right to be using *_muladd for MIPS. MADD.fmt &
> co. were fused operations in the early MIPS IV processors, but they've
> had an intermediate rounding step since then (i.e. they're equivalent
> to a separate multiplication and addition). I'm not feeling brave
> enough to tackle that though.
Actually, this turned out to be the cause of the remaining gfortran
testsuite failures. Patch coming up...
Richard