[PATCH] D59799: [wip][mips] Use AltOrders to prevent using odd FP-registers

[Petar Avramovic via Phabricator via llvm-commits]

Petar.Avramovic added a comment.

> Both GNU assembler and LLVM show warning if odd floating-point register appears in an asm file. As far as I understand the -mno-odd-spreg prevents using odd registers by backend, but does not prevent inserting such registers into asm file directly by a user.

Thanks for clarification.



================
Comment at: llvm/lib/Target/Mips/MipsRegisterInfo.td:387
+  // Do not allocate odd registers when given -mattr=+nooddspreg.
+  let AltOrders = [(add (decimate FGR32, 2))];
+  let AltOrderSelect = [{
----------------
` let AltOrders = [(decimate FGR32, 2)];`  also works here.


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