map_noswiss_test.go

     1  // Copyright 2024 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build !goexperiment.swissmap
     6  
     7  package reflect_test
     8  
     9  import (
    10  	"internal/abi"
    11  	"internal/goarch"
    12  	. "reflect"
    13  	"testing"
    14  )
    15  
    16  func testGCBitsMap(t *testing.T) {
    17  	const bucketCount = abi.OldMapBucketCount
    18  
    19  	hdr := make([]byte, bucketCount/goarch.PtrSize)
    20  
    21  	verifyMapBucket := func(t *testing.T, k, e Type, m any, want []byte) {
    22  		verifyGCBits(t, MapBucketOf(k, e), want)
    23  		verifyGCBits(t, CachedBucketOf(TypeOf(m)), want)
    24  	}
    25  	verifyMapBucket(t,
    26  		Tscalar, Tptr,
    27  		map[Xscalar]Xptr(nil),
    28  		join(hdr, rep(bucketCount, lit(0)), rep(bucketCount, lit(1)), lit(1)))
    29  	verifyMapBucket(t,
    30  		Tscalarptr, Tptr,
    31  		map[Xscalarptr]Xptr(nil),
    32  		join(hdr, rep(bucketCount, lit(0, 1)), rep(bucketCount, lit(1)), lit(1)))
    33  	verifyMapBucket(t, Tint64, Tptr,
    34  		map[int64]Xptr(nil),
    35  		join(hdr, rep(bucketCount, rep(8/goarch.PtrSize, lit(0))), rep(bucketCount, lit(1)), lit(1)))
    36  	verifyMapBucket(t,
    37  		Tscalar, Tscalar,
    38  		map[Xscalar]Xscalar(nil),
    39  		empty)
    40  	verifyMapBucket(t,
    41  		ArrayOf(2, Tscalarptr), ArrayOf(3, Tptrscalar),
    42  		map[[2]Xscalarptr][3]Xptrscalar(nil),
    43  		join(hdr, rep(bucketCount*2, lit(0, 1)), rep(bucketCount*3, lit(1, 0)), lit(1)))
    44  	verifyMapBucket(t,
    45  		ArrayOf(64/goarch.PtrSize, Tscalarptr), ArrayOf(64/goarch.PtrSize, Tptrscalar),
    46  		map[[64 / goarch.PtrSize]Xscalarptr][64 / goarch.PtrSize]Xptrscalar(nil),
    47  		join(hdr, rep(bucketCount*64/goarch.PtrSize, lit(0, 1)), rep(bucketCount*64/goarch.PtrSize, lit(1, 0)), lit(1)))
    48  	verifyMapBucket(t,
    49  		ArrayOf(64/goarch.PtrSize+1, Tscalarptr), ArrayOf(64/goarch.PtrSize, Tptrscalar),
    50  		map[[64/goarch.PtrSize + 1]Xscalarptr][64 / goarch.PtrSize]Xptrscalar(nil),
    51  		join(hdr, rep(bucketCount, lit(1)), rep(bucketCount*64/goarch.PtrSize, lit(1, 0)), lit(1)))
    52  	verifyMapBucket(t,
    53  		ArrayOf(64/goarch.PtrSize, Tscalarptr), ArrayOf(64/goarch.PtrSize+1, Tptrscalar),
    54  		map[[64 / goarch.PtrSize]Xscalarptr][64/goarch.PtrSize + 1]Xptrscalar(nil),
    55  		join(hdr, rep(bucketCount*64/goarch.PtrSize, lit(0, 1)), rep(bucketCount, lit(1)), lit(1)))
    56  	verifyMapBucket(t,
    57  		ArrayOf(64/goarch.PtrSize+1, Tscalarptr), ArrayOf(64/goarch.PtrSize+1, Tptrscalar),
    58  		map[[64/goarch.PtrSize + 1]Xscalarptr][64/goarch.PtrSize + 1]Xptrscalar(nil),
    59  		join(hdr, rep(bucketCount, lit(1)), rep(bucketCount, lit(1)), lit(1)))
    60  }
    61
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