// complex ops
(ComplexReal (ComplexMake real _  )) => real
(ComplexImag (ComplexMake _ imag )) => imag

(Load <t> ptr mem) && t.IsComplex() && t.Size() == 8 =>
  (ComplexMake
    (Load <typ.Float32> ptr mem)
    (Load <typ.Float32>
      (OffPtr <typ.Float32Ptr> [4] ptr)
      mem)
    )
(Store {t} dst (ComplexMake real imag) mem) && t.Size() == 8 =>
  (Store {typ.Float32}

func rewriteValuedec_OpComplexReal(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (ComplexReal (ComplexMake real _ ))
	// result: real
	for {
		if v_0.Op != OpComplexMake {
			break
		}
		real := v_0.Args[0]
		v.copyOf(real)
		return true
	}
	// match: (ComplexReal x:(Load <t> ptr mem))
	// cond: t.IsComplex() && t.Size() == 8

# Regression test for https://go.dev/issue/57754: 'go list' failed if ../src
# relative to the location of the go executable was a symlink to the real src
# directory. (cmd/go expects that ../src is GOROOT/src, but it appears that the
# Debian build of the Go toolchain is attempting to split GOROOT into binary and
# source artifacts in different parent directories.)

[short] skip 'copies the cmd/go binary'
[!symlink] skip 'tests symlink-specific behavior'

		v.Fatalf("decomposeComplexPhi: bad complex size %d", z)
	}

	real := v.Block.NewValue0(v.Pos, OpPhi, partType)
	imag := v.Block.NewValue0(v.Pos, OpPhi, partType)
	for _, a := range v.Args {
		real.AddArg(a.Block.NewValue1(v.Pos, OpComplexReal, partType, a))
		imag.AddArg(a.Block.NewValue1(v.Pos, OpComplexImag, partType, a))
	}
	v.reset(OpComplexMake)
	v.AddArg(real)
	v.AddArg(imag)
}

func decomposeInterfacePhi(v *Value) {

				// synthesize a pseudo-version with an appropriate major version and a
				// timestamp below any real timestamp. That way, if the main module is
				// used from within some other module, the user will be able to upgrade
				// the requirement to any real version they choose.
				if _, pathMajor, ok := module.SplitPathVersion(mp); ok && len(pathMajor) > 0 {
					mv = module.ZeroPseudoVersion(pathMajor[1:])

		for _, v := range b.Values {
			if n, ok := v.Aux.(*ir.Name); ok {
				switch n.Class {
				case ir.PPARAMOUT:
					if n.IsOutputParamInRegisters() && v.Op == ssa.OpVarDef {
						// ignore VarDef, look for "real" uses.
						// TODO: maybe do this for PAUTO as well?
						continue
					}
					fallthrough
				case ir.PPARAM, ir.PAUTO:
					n.SetUsed(true)
				}
			}
		}
	}

directives that cmd/link is not sophisticated enough to derive from _all.o
on its own. Similarly, the _all.o uses dynamic references to real
system object code because cmd/link is not sophisticated enough to process
the real code.

The main benefits of this system are that cmd/link remains relatively simple
(it does not need to implement a complete ELF and Mach-O linker) and

The built-in function <code>complex</code> constructs a complex
value from a floating-point real and imaginary part, while
<code>real</code> and <code>imag</code>
extract the real and imaginary parts of a complex value.
</p>

<pre class="grammar">
complex(realPart, imaginaryPart floatT) complexT
real(complexT) floatT
imag(complexT) floatT
</pre>

<p>

	// in verify mode we are double-checking that the cache entries
	// are entirely reproducible. As just noted, this may be unrealistic
	// in some cases but the check is also useful for shaking out real bugs.
	entry := fmt.Sprintf("v1 %x %x %20d %20d\n", id, out, size, time.Now().UnixNano())
	if verify && allowVerify {
		old, err := c.get(id)
		if err == nil && (old.OutputID != out || old.Size != size) {

		// are *inside* of the 'std' module: the 'vendor/' packages that resolve
		// globally from GOROOT/src/vendor (and are listed as part of 'go list std')
		// are distinct from the real module dependencies, and cannot import
		// internal packages from the real module.
		//
		// (Note that although the 'vendor/' packages match the 'std' *package*
		// pattern, they are not part of the std *module*, and do not affect