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printer: shorten text size when argsize is zero
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package printer_test | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/mmcloughlin/avo/build" | ||
| "github.com/mmcloughlin/avo/printer" | ||
| "github.com/mmcloughlin/avo/reg" | ||
| ) | ||
|
|
||
| func TestBasic(t *testing.T) { | ||
| ctx := build.NewContext() | ||
| ctx.Function("add") | ||
| ctx.SignatureExpr("func(x, y uint64) uint64") | ||
| x := ctx.Load(ctx.Param("x"), reg.RAX) | ||
| y := ctx.Load(ctx.Param("y"), reg.R9) | ||
| ctx.ADDQ(x, y) | ||
| ctx.Store(y, ctx.ReturnIndex(0)) | ||
| ctx.RET() | ||
|
|
||
| AssertPrintsLines(t, ctx, printer.NewGoAsm, []string{ | ||
| "// Code generated by avo. DO NOT EDIT.", | ||
| "", | ||
| "#include \"textflag.h\"", | ||
| "", | ||
| "// func add(x uint64, y uint64) uint64", | ||
| "TEXT ·add(SB), 0, $0-24", | ||
| "\tMOVQ\tx(FP), AX", | ||
| "\tMOVQ\ty+8(FP), R9", | ||
| "\tADDQ\tAX, R9", | ||
| "\tMOVQ\tR9, ret+16(FP)", | ||
| "\tRET", | ||
| "", | ||
| }) | ||
| } | ||
|
|
||
| func TestTextSize(t *testing.T) { | ||
| ctx := build.NewContext() | ||
|
|
||
| ctx.Function("noargs") | ||
| ctx.SignatureExpr("func()") | ||
| ctx.AllocLocal(16) | ||
| ctx.RET() | ||
|
|
||
| ctx.Function("withargs") | ||
| ctx.SignatureExpr("func(x, y uint64) uint64") | ||
| ctx.RET() | ||
|
|
||
| AssertPrintsLines(t, ctx, printer.NewGoAsm, []string{ | ||
| "// Code generated by avo. DO NOT EDIT.", | ||
| "", | ||
| "#include \"textflag.h\"", | ||
| "", | ||
| "// func noargs()", | ||
| "TEXT ·noargs(SB), 0, $16", // expect only the frame size | ||
| "\tRET", | ||
| "", | ||
| "// func withargs(x uint64, y uint64) uint64", | ||
| "TEXT ·withargs(SB), 0, $0-24", // expect both frame size and argument size | ||
| "\tRET", | ||
| "", | ||
| }) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| package printer_test | ||
|
|
||
| import ( | ||
| "strings" | ||
| "testing" | ||
|
|
||
| "github.com/mmcloughlin/avo/build" | ||
| "github.com/mmcloughlin/avo/printer" | ||
| ) | ||
|
|
||
| func AssertPrintsLines(t *testing.T, ctx *build.Context, pb printer.Builder, expect []string) { | ||
| t.Helper() | ||
|
|
||
| output := Print(t, ctx, pb) | ||
| lines := strings.Split(output, "\n") | ||
|
|
||
| if len(expect) != len(lines) { | ||
| t.Fatalf("have %d lines of output; expected %d", len(lines), len(expect)) | ||
| } | ||
|
|
||
| for i := range expect { | ||
| if expect[i] != lines[i] { | ||
| t.Errorf("mismatch on line %d:\n\tgot\t%s\n\texpect\t%s\n", i, lines[i], expect[i]) | ||
| } | ||
| } | ||
| } | ||
|
|
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| func Print(t *testing.T, ctx *build.Context, pb printer.Builder) string { | ||
| t.Helper() | ||
|
|
||
| f, errs := ctx.Result() | ||
| if errs != nil { | ||
| t.Fatal(errs) | ||
| } | ||
|
|
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| p := pb(printer.NewDefaultConfig()) | ||
| b, err := p.Print(f) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| return string(b) | ||
| } |