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runtime: add cap and len support for chans

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This commit is contained in:
cornelk
2020-05-11 20:54:22 +03:00
committed by Ayke
parent 1461563e3f
commit 7e64bc8f77
4 changed files with 40 additions and 7 deletions
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compiler/compiler.go
+2 -6
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@@ -1201,9 +1201,7 @@ func (b *builder) createBuiltin(args []ssa.Value, callName string, pos token.Pos
var llvmCap llvm.Value
switch args[0].Type().(type) {
case *types.Chan:
// Channel. Buffered channels haven't been implemented yet so always
// return 0.
llvmCap = llvm.ConstInt(b.intType, 0, false)
llvmCap = b.createRuntimeCall("chanCap", []llvm.Value{value}, "cap")
case *types.Slice:
llvmCap = b.CreateExtractValue(value, 2, "cap")
default:
@@ -1259,9 +1257,7 @@ func (b *builder) createBuiltin(args []ssa.Value, callName string, pos token.Pos
// string or slice
llvmLen = b.CreateExtractValue(value, 1, "len")
case *types.Chan:
// Channel. Buffered channels haven't been implemented yet so always
// return 0.
llvmLen = llvm.ConstInt(b.intType, 0, false)
llvmLen = b.createRuntimeCall("chanLen", []llvm.Value{value}, "len")
case *types.Map:
llvmLen = b.createRuntimeCall("hashmapLen", []llvm.Value{value}, "len")
default: