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cmd/compile: float SUB/DIV can use r15 #15584

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randall77 opened this issue May 6, 2016 · 1 comment
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cmd/compile: float SUB/DIV can use r15 #15584

randall77 opened this issue May 6, 2016 · 1 comment
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FrozenDueToAge Performance
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Go1.8Early

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@randall77
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Now that 2-address instructions always get compatible registers, we don't need to reserve r15 for a temp register.

See cmd/compile/internal/ssa/gen/AMD64Ops.go, all uses of fp21x15 should be fp21 instead.
@randall77 randall77 self-assigned this May 6, 2016
@randall77 randall77 added this to the Go1.8Early milestone May 6, 2016
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CL https://golang.org/cl/28272 mentions this issue.

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