}
	}

	// Check for case-insensitive collision of input files.
	// To avoid problems on case-insensitive files, we reject any package
	// where two different input files have equal names under a case-insensitive
	// comparison.
	inputs := p.AllFiles()
	f1, f2 := str.FoldDup(inputs)
	if f1 != "" {
		setError(fmt.Errorf("case-insensitive file name collision: %q and %q", f1, f2))

		gp2flags1flags = regInfo{inputs: []regMask{gp, gp, 0}, outputs: []regMask{gp, 0}}

		gp2flags     = regInfo{inputs: []regMask{gpsp, gpsp}}
		gp1flags     = regInfo{inputs: []regMask{gpsp}}
		gp0flagsLoad = regInfo{inputs: []regMask{gpspsbg, 0}}
		gp1flagsLoad = regInfo{inputs: []regMask{gpspsbg, gpsp, 0}}
		gp2flagsLoad = regInfo{inputs: []regMask{gpspsbg, gpsp, gpsp, 0}}
		flagsgp      = regInfo{inputs: nil, outputs: gponly}

//
// The -fuzzcache flag causes clean to remove files stored in the Go build
// cache for fuzz testing. The fuzzing engine caches files that expand
// code coverage, so removing them may make fuzzing less effective until
// new inputs are found that provide the same coverage. These files are
// distinct from those stored in testdata directory; clean does not remove
// those files.
//
// For more about build flags, see 'go help build'.
//

(Div64 <t> n (Const64 [c])) && c < 0 && c != -1<<63 => (Neg64 (Div64 <t> n (Const64 <t> [-c])))

// Dividing by the most-negative number.  Result is always 0 except
// if the input is also the most-negative number.
// We can detect that using the sign bit of x & -x.
(Div8  <t> x (Const8  [-1<<7 ])) => (Rsh8Ux64  (And8  <t> x (Neg8  <t> x)) (Const64 <typ.UInt64> [7 ]))

			// Ignore error; different assembler versions
			// are unlikely to make any difference anyhow.
			fmt.Fprintf(h, "asm %q\n", id)
		}
	}

	// Input files.
	inputFiles := str.StringList(
		p.GoFiles,
		p.CgoFiles,
		p.CFiles,
		p.CXXFiles,
		p.FFiles,
		p.MFiles,
		p.HFiles,
		p.SFiles,
		p.SysoFiles,
		p.SwigFiles,
		p.SwigCXXFiles,

"\U00110000"         // illegal: invalid Unicode code point
</pre>

<p>
These examples all represent the same string:
</p>

<pre>
"日本語"                                 // UTF-8 input text
`日本語`                                 // UTF-8 input text as a raw literal
"\u65e5\u672c\u8a9e"                    // the explicit Unicode code points
"\U000065e5\U0000672c\U00008a9e"        // the explicit Unicode code points