d *= b[i+3]
	// amd64: `DIVSS\t16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
	d /= b[i+4]
	return c, d
}

func storeTest(a []bool, v int, i int) {
	// amd64: `BTL\t\$0,`,`SETCS\t4\([A-Z]+[0-9]*\)`
	a[4] = v&1 != 0
	// amd64: `BTL\t\$1,`,`SETCS\t3\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
	a[3+i] = v&2 != 0
}

func bitOps(p *[12]uint64) {
	// amd64: `ORQ\t\$8, \(AX\)`
	p[0] |= 8
	// amd64: `ORQ\t\$1073741824, 8\(AX\)`

		{name: "SETGE", argLength: 1, reg: readflags, asm: "SETGE"}, // extract signed >= condition from arg0
		{name: "SETB", argLength: 1, reg: readflags, asm: "SETCS"},  // extract unsigned < condition from arg0
		{name: "SETBE", argLength: 1, reg: readflags, asm: "SETLS"}, // extract unsigned <= condition from arg0

// Note that BTx instructions use the carry bit, so we need to convert tests for zero flag
// into tests for carry flags.
// ULT and SETB check the carry flag; they are identical to CS and SETCS. Same, mutatis
// mutandis, for UGE and SETAE, and CC and SETCC.
((NE|EQ) (TESTL (SHLL (MOVLconst [1]) x) y)) => ((ULT|UGE) (BTL x y))
((NE|EQ) (TESTQ (SHLQ (MOVQconst [1]) x) y)) => ((ULT|UGE) (BTQ x y))