go.mod: update golangci-lint to v1.37

3 files changed, 75 insertions, 7 deletions

diff --git a/vendor/github.com/gostaticanalysis/analysisutil/README.md b/vendor/github.com/gostaticanalysis/analysisutil/README.md
index c031e16e2..d8fd3d2a4 100644
--- a/vendor/github.com/gostaticanalysis/analysisutil/README.md
+++ b/vendor/github.com/gostaticanalysis/analysisutil/README.md
@@ -1,10 +1,5 @@
 # analysisutil
 
-[![godoc.org][godoc-badge]][godoc]
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/gostaticanalysis/analysisutil)](https://pkg.go.dev/github.com/gostaticanalysis/analysisutil)
 
 Utilities for x/tools/go/analysis package.
-
-<!-- links -->
-[godoc]: https://godoc.org/github.com/gostaticanalysis/analysisutil
-[godoc-badge]: https://img.shields.io/badge/godoc-reference-4F73B3.svg?style=flat-square&label=%20godoc.org
-
diff --git a/vendor/github.com/gostaticanalysis/analysisutil/ssa.go b/vendor/github.com/gostaticanalysis/analysisutil/ssa.go
index ce3af580b..517f6b9b4 100644
--- a/vendor/github.com/gostaticanalysis/analysisutil/ssa.go
+++ b/vendor/github.com/gostaticanalysis/analysisutil/ssa.go
@@ -72,7 +72,7 @@ func returnsInBlock(b *ssa.BasicBlock, done map[*ssa.BasicBlock]bool) (rets []*s
 }
 
 // BinOp returns binary operator values which are contained in the block b.
-func BinOp(b *ssa.BasicBlock) ([]*ssa.BinOp) {
+func BinOp(b *ssa.BasicBlock) []*ssa.BinOp {
 	var binops []*ssa.BinOp
 	for _, instr := range b.Instrs {
 		if binop, ok := instr.(*ssa.BinOp); ok {
@@ -81,3 +81,66 @@ func BinOp(b *ssa.BasicBlock) ([]*ssa.BinOp) {
 	}
 	return binops
 }
+
+// Used returns an instruction which uses the value in the instructions.
+func Used(v ssa.Value, instrs []ssa.Instruction) ssa.Instruction {
+	if len(instrs) == 0 || v.Referrers() == nil {
+		return nil
+	}
+
+	for _, instr := range instrs {
+		if used := usedInInstr(v, instr); used != nil {
+			return used
+		}
+	}
+
+	return nil
+}
+
+func usedInInstr(v ssa.Value, instr ssa.Instruction) ssa.Instruction {
+	switch instr := instr.(type) {
+	case *ssa.MakeClosure:
+		return usedInClosure(v, instr)
+	default:
+		operands := instr.Operands(nil)
+		for _, x := range operands {
+			if x != nil && *x == v {
+				return instr
+			}
+		}
+	}
+
+	switch v := v.(type) {
+	case *ssa.UnOp:
+		return usedInInstr(v.X, instr)
+	}
+
+	return nil
+}
+
+func usedInClosure(v ssa.Value, instr *ssa.MakeClosure) ssa.Instruction {
+	fn, _ := instr.Fn.(*ssa.Function)
+	if fn == nil {
+		return nil
+	}
+
+	var fv *ssa.FreeVar
+	for i := range instr.Bindings {
+		if instr.Bindings[i] == v {
+			fv = fn.FreeVars[i]
+			break
+		}
+	}
+
+	if fv == nil {
+		return nil
+	}
+
+	for _, b := range fn.Blocks {
+		if used := Used(fv, b.Instrs); used != nil {
+			return used
+		}
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/gostaticanalysis/analysisutil/types.go b/vendor/github.com/gostaticanalysis/analysisutil/types.go
index 4773ac43e..46b970621 100644
--- a/vendor/github.com/gostaticanalysis/analysisutil/types.go
+++ b/vendor/github.com/gostaticanalysis/analysisutil/types.go
@@ -196,3 +196,13 @@ func mergeTypesInfo(i1, i2 *types.Info) {
 	// InitOrder
 	i1.InitOrder = append(i1.InitOrder, i2.InitOrder...)
 }
+
+// Under returns the most bottom underlying type.
+func Under(t types.Type) types.Type {
+	switch t := t.(type) {
+	case *types.Named:
+		return Under(t.Underlying())
+	default:
+		return t
+	}
+}