| commit | 9f51bc64c389759b5a86689b43bf1a1bd63c176c | |
| author | Alastair Bridgewater <nyef@kana.lisphacker.com> | |
| Wed, 16 Apr 2014 21:10:54 +0000 (16 17:10 -0400) | ||
| committer | Alastair Bridgewater <nyef@kana.lisphacker.com> | |
| Sat, 10 May 2014 19:12:19 +0000 (10 15:12 -0400) | ||
| tree | d32bb93ee780661195656301d53265492c095ebf | treesnapshot (tar.gz zip) |
| parent | 9913c34770995ffce19fc6fa9005aa2808cedb8d | commitdiff |
compiler/arm/float: Float comparison VOPs.
* Cribbed from the PPC backend, updated for the realities of the
ARM architecture, lightly tested, and possibly even working.
* One ugly bit here: We need to use FMSTAT (or whatever the more
modern replacement is) in order to get the VFP condition codes to
where they do any good for control flow. This instruction isn't
currently known to the assembler by name, and it's not at all
obvious how to use the lower-level equivalent instruction, so
there's a bare INST WORD being used to encode FMSTAT directly.
* Cribbed from the PPC backend, updated for the realities of the
ARM architecture, lightly tested, and possibly even working.
* One ugly bit here: We need to use FMSTAT (or whatever the more
modern replacement is) in order to get the VFP condition codes to
where they do any good for control flow. This instruction isn't
currently known to the assembler by name, and it's not at all
obvious how to use the lower-level equivalent instruction, so
there's a bare INST WORD being used to encode FMSTAT directly.
| src/compiler/arm/float.lisp | diffblobblamehistory |