# disable cgo: no C compiler anymore (unless the baked-in defaultCC is an
# absolute path and exists.
env CC=
env PATH=$GOROOT/bin
go env CGO_ENABLED
[!abscc] stdout 0
[abscc] stdout 1

# Setting CC should re-enable cgo.
env CC=cc
go env CGO_ENABLED
stdout 1

# So should setting CGO_ENABLED.
env CC=
env CGO_ENABLED=1
go env CGO_ENABLED

# no longer installed anyway! Since we're requiring a C compiler in order to
# build and use cgo libraries in the standard library, we should make sure it
# matches what's in the cache.

[abscc] stop

env CGO_ENABLED=1
env CC=''
[!GOOS:plan9] env PATH=''  # Guaranteed not to include $(go env CC)!
[GOOS:plan9] env path=''
! go build -x runtime/cgo

		}
		conds[name] = cond
	}

	lazyBool := func(summary string, f func() bool) script.Cond {
		return script.OnceCondition(summary, func() (bool, error) { return f(), nil })
	}

	add("abscc", script.Condition("default $CC path is absolute and exists", defaultCCIsAbsolute))
	add("asan", sysCondition("-asan", platform.ASanSupported, true))

The available conditions are:
[GOARCH:*]
	runtime.GOARCH == <suffix>
[GODEBUG:*]
	GODEBUG contains <suffix>
[GOEXPERIMENT:*]
	GOEXPERIMENT <suffix> is enabled
[GOOS:*]
	runtime.GOOS == <suffix>
[abscc]
	default $CC path is absolute and exists
[asan]
	GOOS/GOARCH supports -asan
[buildmode:*]
	go supports -buildmode=<suffix>
[case-sensitive]
	$WORK filesystem is case-sensitive
[cc:*]

	"DIVWV",
	"DIVWU",
	"DIVWUCC",
	"DIVWUVCC",
	"DIVWUV",
	"MODUD",
	"MODUW",
	"MODSD",
	"MODSW",
	"EQV",
	"EQVCC",
	"EXTSB",
	"EXTSBCC",
	"EXTSH",
	"EXTSHCC",
	"FABS",
	"FABSCC",
	"FADD",
	"FADDCC",
	"FADDS",
	"FADDSCC",
	"FCMPO",
	"FCMPU",
	"FCTIW",
	"FCTIWCC",
	"FCTIWZ",
	"FCTIWZCC",
	"FDIV",
	"FDIVCC",
	"FDIVS",
	"FDIVSCC",
	"FMADD",
	"FMADDCC",

	case arm.AMULA, arm.AMULS, arm.AMMULA, arm.AMMULS, arm.AMULABB, arm.AMULAWB, arm.AMULAWT:
		return true
	}
	return false
}

var bcode = []obj.As{
	arm.ABEQ,
	arm.ABNE,
	arm.ABCS,
	arm.ABCC,
	arm.ABMI,
	arm.ABPL,
	arm.ABVS,
	arm.ABVC,
	arm.ABHI,
	arm.ABLS,
	arm.ABGE,
	arm.ABLT,
	arm.ABGT,
	arm.ABLE,
	arm.AB,
	obj.ANOP,
}

	FABS F1, F2                     // fc400a10
	FNABS F1, F2                    // fc400910
	FABSCC F1, F2                   // fc400a11
	FNABSCC F1, F2                  // fc400911
	FNEG F1, F2                     // fc400850
	FNEGCC F1, F2                   // fc400851
	FABSCC F1, F2                   // fc400a11
	FRSP F1, F2                     // fc400818
	FRSPCC F1, F2                   // fc400819

	AADCS
	AADCSW
	AADCW
	AADD
	AADDS
	AADDSW
	AADDW
	AADR
	AADRP
	AAESD
	AAESE
	AAESIMC
	AAESMC
	AAND
	AANDS
	AANDSW
	AANDW
	AASR
	AASRW
	AAT
	ABCC
	ABCS
	ABEQ
	ABFI
	ABFIW
	ABFM
	ABFMW
	ABFXIL
	ABFXILW
	ABGE
	ABGT
	ABHI
	ABHS
	ABIC
	ABICS
	ABICSW
	ABICW
	ABLE
	ABLO
	ABLS
	ABLT
	ABMI

		case ACMP:
			opset(ATEQ, r0)
			opset(ACMN, r0)
			opset(ATST, r0)

		case AMVN:
			break

		case ABEQ:
			opset(ABNE, r0)
			opset(ABCS, r0)
			opset(ABHS, r0)
			opset(ABCC, r0)
			opset(ABLO, r0)
			opset(ABMI, r0)
			opset(ABPL, r0)
			opset(ABVS, r0)
			opset(ABVC, r0)
			opset(ABHI, r0)
			opset(ABLS, r0)
			opset(ABGE, r0)
			opset(ABLT, r0)

	CMPLDI
	CMPLI
	CNTLZW
	CNTLZWCC
	CRAND
	CRANDC
	CREQV
	CRNAND
	CRNOR
	CROR
	CRORC
	CRXOR
	DCBZ
	EQV
	EQVCC
	EXTSH
	EXTSHCC
	FABS
	FABSCC
	FADD
	FADDCC
	FCMPO
	FCMPU
	FDIV
	FDIVCC
	FMADD
	FMADDCC
	FMR
	FMRCC
	FMSUB
	FMSUBCC
	FMUL
	FMULCC
	FNABS
	FNABSCC
	FNEG
	FNEGCC