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Re: [Qemu-devel] [PATCH 12/14] tcg-sparc: Use defines for temporaries.
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH 12/14] tcg-sparc: Use defines for temporaries. |
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Date: |
Thu, 29 Mar 2012 15:04:47 -0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120316 Thunderbird/11.0 |
On 03/29/2012 02:56 PM, Blue Swirl wrote:
>> > + tcg_out_arithi(s, TCG_REG_T1, rs1, 31, SHIFT_SRA);
>> > + tcg_out_sety(s, TCG_REG_T1);
> By the way, since we assume V9+, this 32 bit division which uses the
> register y could be changed (in some later patch) to use nicer 64 bit
> division.
>
Good spotting.
Although my next trick will be to make tcg changes such that v8plus can be a
TCG_TARGET_REG_BITS == 64 host, and do proper 64-bit arithmetic in the %o/%g
registers.
r~
- Re: [Qemu-devel] [PATCH 07/14] Avoid declaring the env variable at all if CONFIG_TCG_PASS_AREG0., (continued)
- [Qemu-devel] [PATCH 09/14] tcg-sparc: Change AREG0 in generated code to %i0., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 05/14] tcg-sparc: Simplify qemu_ld/st direct memory paths., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 08/14] tcg-sparc: Do not use a global register for AREG0., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 10/14] tcg-sparc: Clean up cruft stemming from attempts to use global registers., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 11/14] tcg-sparc: Mask shift immediates to avoid illegal insns., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 14/14] tcg-sparc: Fix and enable direct TB chaining., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 12/14] tcg-sparc: Use defines for temporaries., Richard Henderson, 2012/03/27
- [Qemu-devel] [PATCH 13/14] tcg-sparc: Add %g/%o registers to alloc_order, Richard Henderson, 2012/03/27