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cmd/compile: retrieve Args from registers

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in progress; doesn't fully work until they are also passed on
register on the caller side.

For #40724.

Change-Id: I29a6680e60bdbe9d132782530214f2a2b51fb8f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/293394
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
David Chase 2021-02-13 10:49:37 -05:00
parent 06c72f3627
commit f2df1e3c34
8 changed files with 64 additions and 14 deletions
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7
src/cmd/compile/internal/abi/abiutils.go
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@ -158,6 +158,13 @@ func (a *ABIConfig) LocalsOffset() int64 {
return a.offsetForLocals
}
// FloatIndexFor translates r into an index in the floating point parameter
// registers. If the result is negative, the input index was actually for the
// integer parameter registers.
func (a *ABIConfig) FloatIndexFor(r RegIndex) int64 {
return int64(r) - int64(a.regAmounts.intRegs)
}
// NumParamRegs returns the number of parameter registers used for a given type,
// without regard for the number available.
func (a *ABIConfig) NumParamRegs(t *types.Type) int {