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Re: RFC: PowerPC floating point features
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Michael Eager <eager at eagercon dot com>
- Cc: GCC <gcc at gcc dot gnu dot org>
- Date: Fri, 04 Apr 2008 23:21:34 -0400
- Subject: Re: RFC: PowerPC floating point features
- References: <47F6B44B.1070200@eagercon.com>
I would prefer feature-based.
TARGET_HARD_FLOAT represents the presence of FPUs.
TARGET_FPRS represents the presence of FP register set because
one variant used GPRs for FP operations.
E500 then added another variant with double-precision FP in the
GPRs.
PowerPC is an architecture and the mess of FP variants clearly is
not a architecture allowing compatibility.
David