compiler: support creating slices with uncommon initial len/cap types
Этот коммит содержится в:
родитель
9181f2d4ce
коммит
8cb7b583d8
2 изменённых файлов: 27 добавлений и 0 удалений
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@ -2420,6 +2420,20 @@ func (c *Compiler) parseExpr(frame *Frame, expr ssa.Value) (llvm.Value, error) {
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// Bounds checking.
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// Bounds checking.
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if !frame.fn.IsNoBounds() {
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if !frame.fn.IsNoBounds() {
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if sliceLen.Type().IntTypeWidth() < c.uintptrType.IntTypeWidth() {
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if expr.Len.Type().(*types.Basic).Info()&types.IsUnsigned != 0 {
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sliceLen = c.builder.CreateZExt(sliceLen, c.uintptrType, "")
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} else {
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sliceLen = c.builder.CreateSExt(sliceLen, c.uintptrType, "")
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}
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}
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if sliceCap.Type().IntTypeWidth() < c.uintptrType.IntTypeWidth() {
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if expr.Cap.Type().(*types.Basic).Info()&types.IsUnsigned != 0 {
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sliceCap = c.builder.CreateZExt(sliceCap, c.uintptrType, "")
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} else {
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sliceCap = c.builder.CreateSExt(sliceCap, c.uintptrType, "")
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}
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}
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c.createRuntimeCall("sliceBoundsCheckMake", []llvm.Value{sliceLen, sliceCap}, "")
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c.createRuntimeCall("sliceBoundsCheckMake", []llvm.Value{sliceLen, sliceCap}, "")
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}
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}
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13
testdata/slice.go
предоставленный
13
testdata/slice.go
предоставленный
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@ -10,6 +10,19 @@ func main() {
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printslice("foo[1:2]", foo[1:2])
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printslice("foo[1:2]", foo[1:2])
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println("sum foo:", sum(foo))
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println("sum foo:", sum(foo))
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// creating a slice with uncommon len, cap types
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assert(len(make([]int, int(2), int(3))) == 2)
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assert(len(make([]int, int8(2), int8(3))) == 2)
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assert(len(make([]int, int16(2), int16(3))) == 2)
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assert(len(make([]int, int32(2), int32(3))) == 2)
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assert(len(make([]int, int64(2), int64(3))) == 2)
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assert(len(make([]int, uint(2), uint(3))) == 2)
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assert(len(make([]int, uint8(2), uint8(3))) == 2)
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assert(len(make([]int, uint16(2), uint16(3))) == 2)
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assert(len(make([]int, uint32(2), uint32(3))) == 2)
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assert(len(make([]int, uint64(2), uint64(3))) == 2)
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assert(len(make([]int, uintptr(2), uintptr(3))) == 2)
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// indexing into a slice with uncommon index types
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// indexing into a slice with uncommon index types
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assert(foo[int(2)] == 4)
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assert(foo[int(2)] == 4)
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assert(foo[int8(2)] == 4)
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assert(foo[int8(2)] == 4)
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