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Current Path: /opt/golang/1.19.4/src/cmd/compile/internal/ssa

opt / golang / 1.19.4 / src / cmd / compile / internal / ssa /

📁 ..
📄 README.md(8.14 KB)
📄 TODO(950 B)
📄 addressingmodes.go(23.64 KB)
📄 bench_test.go(531 B)
📄 biasedsparsemap.go(2.71 KB)
📄 block.go(11.1 KB)
📄 branchelim.go(11.98 KB)
📄 branchelim_test.go(5.21 KB)
📄 cache.go(2.46 KB)
📄 check.go(16.59 KB)
📄 checkbce.go(956 B)
📄 compile.go(18.19 KB)
📄 config.go(11.7 KB)
📄 copyelim.go(1.83 KB)
📄 copyelim_test.go(1.29 KB)
📄 critical.go(3.19 KB)
📄 cse.go(9.43 KB)
📄 cse_test.go(4.25 KB)
📄 deadcode.go(9.61 KB)
📄 deadcode_test.go(3.49 KB)
📄 deadstore.go(9.08 KB)
📄 deadstore_test.go(4.09 KB)
📄 debug.go(56.34 KB)
📄 debug_lines_test.go(8.29 KB)
📄 debug_test.go(28.75 KB)
📄 decompose.go(13.41 KB)
📄 dom.go(7.98 KB)
📄 dom_test.go(13.34 KB)
📄 expand_calls.go(63.5 KB)
📄 export_test.go(3.23 KB)
📄 flagalloc.go(6.68 KB)
📄 flags_amd64_test.s(533 B)
📄 flags_arm64_test.s(699 B)
📄 flags_test.go(2.49 KB)
📄 func.go(27.08 KB)
📄 func_test.go(13.07 KB)
📄 fuse.go(6.5 KB)
📄 fuse_branchredirect.go(3.24 KB)
📄 fuse_comparisons.go(4.04 KB)
📄 fuse_test.go(7.21 KB)
📁 gen
📄 html.go(34.72 KB)
📄 id.go(576 B)
📄 layout.go(4.82 KB)
📄 lca.go(3.77 KB)
📄 lca_test.go(1.65 KB)
📄 likelyadjust.go(15.24 KB)
📄 location.go(3.06 KB)
📄 loopbce.go(10.54 KB)
📄 loopreschedchecks.go(15.86 KB)
📄 looprotate.go(2.61 KB)
📄 lower.go(1.36 KB)
📄 magic.go(15.77 KB)
📄 magic_test.go(9.1 KB)
📄 nilcheck.go(11.06 KB)
📄 nilcheck_test.go(12.17 KB)
📄 numberlines.go(7.83 KB)
📄 op.go(18.65 KB)
📄 opGen.go(1.01 MB)
📄 opt.go(308 B)
📄 passbm_test.go(3.14 KB)
📄 phielim.go(1.48 KB)
📄 phiopt.go(8.08 KB)
📄 poset.go(37.2 KB)
📄 poset_test.go(18.14 KB)
📄 print.go(3.85 KB)
📄 prove.go(41.82 KB)
📄 regalloc.go(83.69 KB)
📄 regalloc_test.go(6.49 KB)
📄 rewrite.go(53.49 KB)
📄 rewrite386.go(289.01 KB)
📄 rewrite386splitload.go(4.05 KB)
📄 rewriteAMD64.go(888.95 KB)
📄 rewriteAMD64splitload.go(21.41 KB)
📄 rewriteARM.go(487.7 KB)
📄 rewriteARM64.go(751.84 KB)
📄 rewriteCond_test.go(10.62 KB)
📄 rewriteLOONG64.go(193.44 KB)
📄 rewriteMIPS.go(174.44 KB)
📄 rewriteMIPS64.go(195.55 KB)
📄 rewritePPC64.go(431.6 KB)
📄 rewriteRISCV64.go(159.66 KB)
📄 rewriteS390X.go(433.4 KB)
📄 rewriteWasm.go(109.86 KB)
📄 rewrite_test.go(6.91 KB)
📄 rewritedec.go(10.16 KB)
📄 rewritedec64.go(63.77 KB)
📄 rewritegeneric.go(617.96 KB)
📄 schedule.go(18.23 KB)
📄 schedule_test.go(2.91 KB)
📄 shift_test.go(4.05 KB)
📄 shortcircuit.go(12.63 KB)
📄 shortcircuit_test.go(1.31 KB)
📄 sizeof_test.go(855 B)
📄 softfloat.go(1.99 KB)
📄 sparsemap.go(1.98 KB)
📄 sparseset.go(1.54 KB)
📄 sparsetree.go(8.05 KB)
📄 stackalloc.go(12.79 KB)
📄 stackframe.go(290 B)
📄 stmtlines_test.go(2.96 KB)
📁 testdata
📄 tighten.go(4.3 KB)
📄 trim.go(4.24 KB)
📄 tuple.go(1.97 KB)
📄 value.go(15.21 KB)
📄 writebarrier.go(19.29 KB)
📄 writebarrier_test.go(1.75 KB)
📄 xposmap.go(3.29 KB)
📄 zcse.go(2.07 KB)
📄 zeroextension_test.go(1.66 KB)

Editing: stmtlines_test.go

package ssa_test

import (
	cmddwarf "cmd/internal/dwarf"
	"cmd/internal/quoted"
	"debug/dwarf"
	"debug/elf"
	"debug/macho"
	"debug/pe"
	"fmt"
	"internal/testenv"
	"internal/xcoff"
	"io"
	"os"
	"runtime"
	"sort"
	"testing"
)

func open(path string) (*dwarf.Data, error) {
	if fh, err := elf.Open(path); err == nil {
		return fh.DWARF()
	}

if fh, err := pe.Open(path); err == nil {
		return fh.DWARF()
	}

if fh, err := macho.Open(path); err == nil {
		return fh.DWARF()
	}

if fh, err := xcoff.Open(path); err == nil {
		return fh.DWARF()
	}

return nil, fmt.Errorf("unrecognized executable format")
}

func must(err error) {
	if err != nil {
		panic(err)
	}
}

type Line struct {
	File string
	Line int
}

func TestStmtLines(t *testing.T) {
	if runtime.GOOS == "plan9" {
		t.Skip("skipping on plan9; no DWARF symbol table in executables")
	}

if runtime.GOOS == "aix" {
		extld := os.Getenv("CC")
		if extld == "" {
			extld = "gcc"
		}
		extldArgs, err := quoted.Split(extld)
		if err != nil {
			t.Fatal(err)
		}
		enabled, err := cmddwarf.IsDWARFEnabledOnAIXLd(extldArgs)
		if err != nil {
			t.Fatal(err)
		}
		if !enabled {
			t.Skip("skipping on aix: no DWARF with ld version < 7.2.2 ")
		}
	}

lines := map[Line]bool{}
	dw, err := open(testenv.GoToolPath(t))
	must(err)
	rdr := dw.Reader()
	rdr.Seek(0)
	for {
		e, err := rdr.Next()
		must(err)
		if e == nil {
			break
		}
		if e.Tag != dwarf.TagCompileUnit {
			continue
		}
		pkgname, _ := e.Val(dwarf.AttrName).(string)
		if pkgname == "runtime" {
			continue
		}
		if pkgname == "crypto/internal/nistec/fiat" {
			continue // golang.org/issue/49372
		}
		if e.Val(dwarf.AttrStmtList) == nil {
			continue
		}
		lrdr, err := dw.LineReader(e)
		must(err)

var le dwarf.LineEntry

for {
			err := lrdr.Next(&le)
			if err == io.EOF {
				break
			}
			must(err)
			fl := Line{le.File.Name, le.Line}
			lines[fl] = lines[fl] || le.IsStmt
		}
	}

nonStmtLines := []Line{}
	for line, isstmt := range lines {
		if !isstmt {
			nonStmtLines = append(nonStmtLines, line)
		}
	}

var m int
	if runtime.GOARCH == "amd64" {
		m = 1 // > 99% obtained on amd64, no backsliding
	} else if runtime.GOARCH == "riscv64" {
		m = 3 // XXX temporary update threshold to 97% for regabi
	} else {
		m = 2 // expect 98% elsewhere.
	}

if len(nonStmtLines)*100 > m*len(lines) {
		t.Errorf("Saw too many (%s, > %d%%) lines without statement marks, total=%d, nostmt=%d ('-run TestStmtLines -v' lists failing lines)\n", runtime.GOARCH, m, len(lines), len(nonStmtLines))
	}
	t.Logf("Saw %d out of %d lines without statement marks", len(nonStmtLines), len(lines))
	if testing.Verbose() {
		sort.Slice(nonStmtLines, func(i, j int) bool {
			if nonStmtLines[i].File != nonStmtLines[j].File {
				return nonStmtLines[i].File < nonStmtLines[j].File
			}
			return nonStmtLines[i].Line < nonStmtLines[j].Line
		})
		for _, l := range nonStmtLines {
			t.Logf("%s:%d has no DWARF is_stmt mark\n", l.File, l.Line)
		}
	}
	t.Logf("total=%d, nostmt=%d\n", len(lines), len(nonStmtLines))
}

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Editing: stmtlines_test.go

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