[Courgette] Using LabelManager to reduce Courgette-apply peak RAM by 25%.

courgette/adjustment_method_unittest.cc

Index: courgette/adjustment_method_unittest.cc
diff --git a/courgette/adjustment_method_unittest.cc b/courgette/adjustment_method_unittest.cc
index 3200f10c6099459c6e6f6e68f43380f551bb7fe4..d8b987c2d89e1ac6be8abe036bfa13f72f5ea31b 100644
--- a/courgette/adjustment_method_unittest.cc
+++ b/courgette/adjustment_method_unittest.cc
@@ -5,11 +5,13 @@
 #include <memory>
 #include <string>
 #include <utility>
+#include <vector>
 
 #include "base/strings/string_util.h"
 #include "courgette/assembly_program.h"
 #include "courgette/courgette.h"
 #include "courgette/encoded_program.h"
+#include "courgette/image_utils.h"
 #include "courgette/streams.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -32,8 +34,20 @@ class AdjustmentMethodTest : public testing::Test {
         new courgette::AssemblyProgram(courgette::EXE_WIN_32_X86));
     prog->set_image_base(0x00400000);
 
-    courgette::Label* labelA = prog->FindOrMakeAbs32Label(0x00410000);
-    courgette::Label* labelB = prog->FindOrMakeAbs32Label(0x00410004);
+    courgette::RVA kRvaA = 0x00410000;
+    courgette::RVA kRvaB = 0x00410004;
+
+    std::vector<courgette::RVA> abs32_rvas;
+    abs32_rvas.push_back(kRvaA);
+    abs32_rvas.push_back(kRvaB);
+    std::vector<courgette::RVA> rel32_rvas;  // Stub.
+
+    courgette::TrivialRvaVisitor abs32_visitor(abs32_rvas);
+    courgette::TrivialRvaVisitor rel32_visitor(rel32_rvas);
+    prog->PrecomputeLabels(&abs32_visitor, &rel32_visitor);
+
+    courgette::Label* labelA = prog->FindAbs32Label(kRvaA);
+    courgette::Label* labelB = prog->FindAbs32Label(kRvaB);
 
     EXPECT_TRUE(prog->EmitAbs32(labelA));
     EXPECT_TRUE(prog->EmitAbs32(labelA));
@@ -88,7 +102,6 @@ class AdjustmentMethodTest : public testing::Test {
   }
 };
 
-
 void AdjustmentMethodTest::Test1() const {
   std::unique_ptr<courgette::AssemblyProgram> prog1 = MakeProgramA();
   std::unique_ptr<courgette::AssemblyProgram> prog2 = MakeProgramB();
@@ -109,7 +122,6 @@ void AdjustmentMethodTest::Test1() const {
   EXPECT_TRUE(s5 == s6);  // Adjustment did change B into A
 }
 
-
 TEST_F(AdjustmentMethodTest, All) {
   Test1();
 }