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Allow use of fs0-fs11 as call-clobbered registers in soft-float ABI #103

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Note this change does not cause ABI breakage, because previously we had disallowed use of fs0-fs11 altogether in the soft-float ABI.

Note this change does not cause ABI breakage, because previously we had
disallowed use of fs0-fs11 altogether in the soft-float ABI.
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I'm going to leave this here for now, GCC is in a bit of flux.

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aswaterman commented Oct 30, 2017

sgtm, it's just a perf optimization

@palmer-dabbelt palmer-dabbelt deleted the fp-callee-saved branch November 7, 2017 01:37
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