[test] Pin tests using -dot-callgraph to legacy PM

-dot-callgraph is not ported to the NPM yet. It can be ported at a later
time if necessary.

Differential Revision: https://reviews.llvm.org/D91685

Author: aeubanks

llvm/test/Other/heat-colors-graphs.ll

@@ -1,6 +1,6 @@
-; RUN: opt < %s -dot-cfg -cfg-heat-colors -cfg-dot-filename-prefix=%t 2>/dev/null
+; RUN: opt %s -dot-cfg -cfg-heat-colors -cfg-dot-filename-prefix=%t -disable-output
 ; RUN: FileCheck %s -input-file=%t.f.dot --check-prefixes=CHECK-CFG,CHECK-BOTH
-; RUN: opt %s -dot-callgraph -callgraph-heat-colors -callgraph-dot-filename-prefix=%t 2>/dev/null
+; RUN: opt -enable-new-pm=0 %s -dot-callgraph -callgraph-heat-colors -callgraph-dot-filename-prefix=%t -disable-output
 ; RUN: FileCheck %s -input-file=%t.callgraph.dot --check-prefix=CHECK-BOTH
 
 ; CHECK-BOTH: color="#{{[(a-z)(0-9)]+}}", style={{[a-z]+}}, fillcolor="#{{[(a-z)(0-9)]+}}"

llvm/test/Other/heat-colors-multigraph.ll

@@ -1,6 +1,6 @@
-; RUN: opt %s -dot-callgraph -callgraph-multigraph -callgraph-dot-filename-prefix=%t 2>/dev/null
+; RUN: opt -enable-new-pm=0 %s -dot-callgraph -callgraph-multigraph -callgraph-dot-filename-prefix=%t -disable-output
 ; RUN: FileCheck %s -input-file=%t.callgraph.dot --check-prefix=CHECK-MULTIGRAPH
-; RUN: opt %s -dot-callgraph -callgraph-dot-filename-prefix=%t 2>/dev/null
+; RUN: opt -enable-new-pm=0 %s -dot-callgraph -callgraph-dot-filename-prefix=%t -disable-output
 ; RUN: FileCheck %s -input-file=%t.callgraph.dot --check-prefix=CHECK
 
 ; CHECK-MULTIGRAPH: {external caller}