go.mod: vendor golangci-lint

1 files changed, 31 insertions, 0 deletions

diff --git a/vendor/github.com/gostaticanalysis/analysisutil/ssa.go b/vendor/github.com/gostaticanalysis/analysisutil/ssa.go
new file mode 100644
index 000000000..379158667
--- /dev/null
+++ b/vendor/github.com/gostaticanalysis/analysisutil/ssa.go
@@ -0,0 +1,31 @@
+package analysisutil
+
+import "golang.org/x/tools/go/ssa"
+
+// IfInstr returns *ssa.If which is contained in the block b.
+// If the block b has not any if instruction, IfInstr returns nil.
+func IfInstr(b *ssa.BasicBlock) *ssa.If {
+	if len(b.Instrs) == 0 {
+		return nil
+	}
+
+	ifinstr, ok := b.Instrs[len(b.Instrs)-1].(*ssa.If)
+	if !ok {
+		return nil
+	}
+
+	return ifinstr
+}
+
+// Phi returns phi values which are contained in the block b.
+func Phi(b *ssa.BasicBlock) (phis []*ssa.Phi) {
+	for _, instr := range b.Instrs {
+		if phi, ok := instr.(*ssa.Phi); ok {
+			phis = append(phis, phi)
+		} else {
+			// no more phi
+			break
+		}
+	}
+	return
+}