using different register names.

Examples:

	ADC R24, R14, R12          <=>     adc x12, x14, x24
	ADDW R26->24, R21, R15     <=>     add w15, w21, w26, asr #24
	FCMPS F2, F3               <=>     fcmp s3, s2
	FCMPD F2, F3               <=>     fcmp d3, d2
	FCVTDH F2, F3              <=>     fcvt h3, d2

2. Go uses .P and .W suffixes to indicate post-increment and pre-increment.

Examples:

	FCPSGN F1, F2                   // fc420810
	FCPSGNCC F1, F2                 // fc420811
	FCMPO F1, F2                    // fc011040
	FCMPO F1, F2, CR0               // FCMPO F1,CR0,F2 // fc011040
	FCMPU F1, F2                    // fc011000
	FCMPU F1, F2, CR0               // FCMPU F1,CR0,F2 // fc011000
	LVX (R3)(R4), V1                // 7c2418ce
	LVX (R3)(R0), V1                // 7c2018ce

	// indexed stores handled separately
	case STB, STBU,
		STH, STHU,
		STW, STWU,
		STD, STDU,
		STFD, STFDU,
		STFS, STFSU,
		STQ, HASHST, HASHSTP:
		return op + " " + strings.Join(args, ",")

	case FCMPU, FCMPO, CMPD, CMPDI, CMPLD, CMPLDI, CMPW, CMPWI, CMPLW, CMPLWI:
		crf := int(inst.Args[0].(CondReg) - CR0)
		cmpstr := op + " " + args[1] + "," + args[2]
		if crf != 0 { // print CRx as the final operand if not implied (i.e BF != 0)

	fmt.Printf("%T, %v\n", s32, s32)

	s64 := strconv.FormatFloat(v, 'E', -1, 64)
	fmt.Printf("%T, %v\n", s64, s64)

	// fmt.Println uses these arguments to print floats
	fmt64 := strconv.FormatFloat(v, 'g', -1, 64)
	fmt.Printf("%T, %v\n", fmt64, fmt64)

	// Output:
	// string, 3.1415927E+00
	// string, 3.1415926535E+00
	// string, 3.1415926535
}

func ExampleFormatInt() {
	v := int64(-42)

(FCMPS (FMOVSconst [0]) x) => (InvertFlags (FCMPS0 x))
(FCMPD x (FMOVDconst [0])) => (FCMPD0 x)
(FCMPD (FMOVDconst [0]) x) => (InvertFlags (FCMPD0 x))

// CSEL needs a flag-generating argument. Synthesize a TSTW if necessary.
(CondSelect x y boolval) && flagArg(boolval) != nil => (CSEL [boolval.Op] x y flagArg(boolval))
(CondSelect x y boolval) && flagArg(boolval) == nil => (CSEL [OpARM64NotEqual] x y (TSTWconst [1] boolval))

	if int32(*x64) == sval32[0] {
		return true
	}

	// ppc64x:-"MOVW\tR\\d+,\\sR\\d+"
	if uint32(*u64) == val32[0] {
		return true
	}

	return false
}

func cmp64(u8 *uint8, x16 *int16, u16 *uint16, x32 *int32, u32 *uint32) bool {

	// ppc64x:-"MOVBZ\tR\\d+,\\sR\\d+"
	if uint64(*u8) == val64[0] {
		return true
	}

	// ppc64x:-"MOVH\tR\\d+,\\sR\\d+"

TEXT ·sinAsm(SB),NOSPLIT,$0-16
	FMOVD   x+0(FP), F0
	//special case Sin(±0) = ±0
	FMOVD   $(0.0), F1
	FCMPU   F0, F1
	BEQ     sinIsZero
	LTDBR	F0, F0
	BLTU    L17
	FMOVD   F0, F5
L2:
	MOVD    $sincosxlim<>+0(SB), R1
	FMOVD   0(R1), F1
	FCMPU   F5, F1
	BGT     L16
	MOVD    $sincoss7<>+0(SB), R1
	FMOVD   0(R1), F4
	MOVD    $sincoss6<>+0(SB), R1
	FMOVD   0(R1), F1

		}
		panicmakeslicecap()
	}

	return mallocgc(mem, et, true)
}

func makeslice64(et *_type, len64, cap64 int64) unsafe.Pointer {
	len := int(len64)
	if int64(len) != len64 {
		panicmakeslicelen()
	}

	cap := int(cap64)
	if int64(cap) != cap64 {
		panicmakeslicecap()
	}

	return makeslice(et, len, cap)
}

// growslice allocates new backing store for a slice.
//

#include <sys/uio.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_var.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <netinet/tcp.h>

enum {
	sizeofPtr = sizeof(void*),
};

union sockaddr_all {
	struct sockaddr s1;	// this one gets used for fields
	struct sockaddr_in s2;	// these pad it out

// with coefficients determined with a Remez exchange algorithm.

TEXT	·atanAsm(SB), NOSPLIT, $0-16
	FMOVD	x+0(FP), F0
	//special case Atan(±0) = ±0
	FMOVD   $(0.0), F1
	FCMPU   F0, F1
	BEQ     atanIsZero

	MOVD	$·atanrodataL8<>+0(SB), R5
	MOVH	$0x3FE0, R3
	LGDR	F0, R1
	RISBGNZ	$32, $63, $32, R1, R1
	RLL	$16, R1, R2
	ANDW	$0x7FF0, R2
	MOVW	R2, R6
	MOVW	R3, R7