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📁 ..
📄 README(5.21 KB)
📄 addrcalc.go(324 B)
📄 alloc.go(902 B)
📄 arithmetic.go(14.63 KB)
📄 bitfield.go(9.64 KB)
📄 bits.go(5.95 KB)
📄 bmi.go(2.19 KB)
📄 bool.go(705 B)
📄 clobberdead.go(1.31 KB)
📄 clobberdeadreg.go(1.29 KB)
📄 compare_and_branch.go(3.79 KB)
📄 comparisons.go(11.79 KB)
📄 condmove.go(5.3 KB)
📄 copy.go(3.36 KB)
📄 floats.go(3.21 KB)
📄 fuse.go(4.79 KB)
📄 issue22703.go(5.43 KB)
📄 issue25378.go(445 B)
📄 issue31618.go(504 B)
📄 issue33580.go(459 B)
📄 issue38554.go(355 B)
📄 issue42610.go(673 B)
📄 issue48054.go(464 B)
📄 issue52635.go(655 B)
📄 logic.go(815 B)
📄 mapaccess.go(9.21 KB)
📄 maps.go(3.1 KB)
📄 math.go(6.12 KB)
📄 mathbits.go(18.06 KB)
📄 memcombine.go(24 KB)
📄 memops.go(11.65 KB)
📄 noextend.go(4.8 KB)
📄 race.go(651 B)
📄 regabi_regalloc.go(494 B)
📄 retpoline.go(224 B)
📄 rotate.go(5.43 KB)
📄 select.go(373 B)
📄 shift.go(9.15 KB)
📄 shortcircuit.go(368 B)
📄 slices.go(8.09 KB)
📄 smallintiface.go(500 B)
📄 spectre.go(722 B)
📄 stack.go(2.96 KB)
📄 strings.go(2.08 KB)
📄 structs.go(887 B)
📄 switch.go(1.13 KB)
📄 zerosize.go(650 B)

Editing: maps.go

// asmcheck

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package codegen

// This file contains code generation tests related to the handling of
// map types.

// ------------------- //
//     Access Const    //
// ------------------- //

// Direct use of constants in fast map access calls (Issue #19015).

func AccessInt1(m map[int]int) int {
	// amd64:"MOV[LQ]\t[$]5"
	return m[5]
}

func AccessInt2(m map[int]int) bool {
	// amd64:"MOV[LQ]\t[$]5"
	_, ok := m[5]
	return ok
}

func AccessString1(m map[string]int) int {
	// amd64:`.*"abc"`
	return m["abc"]
}

func AccessString2(m map[string]int) bool {
	// amd64:`.*"abc"`
	_, ok := m["abc"]
	return ok
}

// ------------------- //
//  String Conversion  //
// ------------------- //

func LookupStringConversionSimple(m map[string]int, bytes []byte) int {
	// amd64:-`.*runtime\.slicebytetostring\(`
	return m[string(bytes)]
}

func LookupStringConversionStructLit(m map[struct{ string }]int, bytes []byte) int {
	// amd64:-`.*runtime\.slicebytetostring\(`
	return m[struct{ string }{string(bytes)}]
}

func LookupStringConversionArrayLit(m map[[2]string]int, bytes []byte) int {
	// amd64:-`.*runtime\.slicebytetostring\(`
	return m[[2]string{string(bytes), string(bytes)}]
}

func LookupStringConversionNestedLit(m map[[1]struct{ s [1]string }]int, bytes []byte) int {
	// amd64:-`.*runtime\.slicebytetostring\(`
	return m[[1]struct{ s [1]string }{struct{ s [1]string }{s: [1]string{string(bytes)}}}]
}

func LookupStringConversionKeyedArrayLit(m map[[2]string]int, bytes []byte) int {
	// amd64:-`.*runtime\.slicebytetostring\(`
	return m[[2]string{0: string(bytes)}]
}

// ------------------- //
//     Map Clear       //
// ------------------- //

// Optimization of map clear idiom (Issue #20138).

func MapClearReflexive(m map[int]int) {
	// amd64:`.*runtime\.mapclear`
	// amd64:-`.*runtime\.mapiterinit`
	for k := range m {
		delete(m, k)
	}
}

func MapClearIndirect(m map[int]int) {
	s := struct{ m map[int]int }{m: m}
	// amd64:`.*runtime\.mapclear`
	// amd64:-`.*runtime\.mapiterinit`
	for k := range s.m {
		delete(s.m, k)
	}
}

func MapClearPointer(m map[*byte]int) {
	// amd64:`.*runtime\.mapclear`
	// amd64:-`.*runtime\.mapiterinit`
	for k := range m {
		delete(m, k)
	}
}

func MapClearNotReflexive(m map[float64]int) {
	// amd64:`.*runtime\.mapiterinit`
	// amd64:-`.*runtime\.mapclear`
	for k := range m {
		delete(m, k)
	}
}

func MapClearInterface(m map[interface{}]int) {
	// amd64:`.*runtime\.mapiterinit`
	// amd64:-`.*runtime\.mapclear`
	for k := range m {
		delete(m, k)
	}
}

func MapClearSideEffect(m map[int]int) int {
	k := 0
	// amd64:`.*runtime\.mapiterinit`
	// amd64:-`.*runtime\.mapclear`
	for k = range m {
		delete(m, k)
	}
	return k
}

func MapLiteralSizing(x int) (map[int]int, map[int]int) {
	// amd64:"MOVL\t[$]10,"
	m := map[int]int{
		0: 0,
		1: 1,
		2: 2,
		3: 3,
		4: 4,
		5: 5,
		6: 6,
		7: 7,
		8: 8,
		9: 9,
	}
	// amd64:"MOVL\t[$]10,"
	n := map[int]int{
		0: x,
		1: x,
		2: x,
		3: x,
		4: x,
		5: x,
		6: x,
		7: x,
		8: x,
		9: x,
	}
	return m, n
}

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Editing: maps.go

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