diff options
Diffstat (limited to 'src/cmd')
| -rw-r--r-- | src/cmd/compile/internal/devirtualize/pgo.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/devirtualize/pgo.go b/src/cmd/compile/internal/devirtualize/pgo.go index 0a34e7eb8d..7b6c8ba0c0 100644 --- a/src/cmd/compile/internal/devirtualize/pgo.go +++ b/src/cmd/compile/internal/devirtualize/pgo.go @@ -241,6 +241,15 @@ func maybeDevirtualizeFunctionCall(p *pgo.Profile, fn *ir.Func, call *ir.CallExp } return nil, nil, 0 } + // runtime.memhash_varlen does not look like a closure, but it uses + // runtime.getclosureptr to access data encoded by callers, which are + // are generated by cmd/compile/internal/reflectdata.genhash. + if callee.Sym().Pkg.Path == "runtime" && callee.Sym().Name == "memhash_varlen" { + if base.Debug.PGODebug >= 3 { + fmt.Printf("callee %s is a closure (runtime.memhash_varlen), skipping\n", ir.FuncName(callee)) + } + return nil, nil, 0 + } // TODO(prattmic): We don't properly handle methods as callees in two // different dimensions: // |