Add C-/JS-APIs for inlining options (#2655)

Allows a user to modify the inlining limits using the C- and JS-APIs.

* binaryen.**getAlwaysInlineMaxSize**(): `number`
* binaryen.**setAlwaysInlineMaxSize**(size: `number`): `void`
* binaryen.**getFlexibleInlineMaxSize**(): `number`
* binaryen.**setFlexibleInlineMaxSize**(size: `number`): `void`
* binaryen.**getOneCallerInlineMaxSize**(): `number`
* binaryen.**setOneCallerInlineMaxSize**(size: `number`): `void`

5 files changed, 145 insertions, 0 deletions

diff --git a/src/binaryen-c.cpp b/src/binaryen-c.cpp
index 17c95c96e..fc16eee42 100644
--- a/src/binaryen-c.cpp
+++ b/src/binaryen-c.cpp
@@ -3958,6 +3958,54 @@ void BinaryenClearPassArguments(void) {
   globalPassOptions.arguments.clear();
 }
 
+BinaryenIndex BinaryenGetAlwaysInlineMaxSize(void) {
+  if (tracing) {
+    std::cout << "  BinaryenGetAlwaysInlineMaxSize();\n";
+  }
+
+  return globalPassOptions.inlining.alwaysInlineMaxSize;
+}
+
+void BinaryenSetAlwaysInlineMaxSize(BinaryenIndex size) {
+  if (tracing) {
+    std::cout << "  BinaryenSetAlwaysInlineMaxSize(" << size << ");\n";
+  }
+
+  globalPassOptions.inlining.alwaysInlineMaxSize = size;
+}
+
+BinaryenIndex BinaryenGetFlexibleInlineMaxSize(void) {
+  if (tracing) {
+    std::cout << "  BinaryenGetFlexibleInlineMaxSize();\n";
+  }
+
+  return globalPassOptions.inlining.flexibleInlineMaxSize;
+}
+
+void BinaryenSetFlexibleInlineMaxSize(BinaryenIndex size) {
+  if (tracing) {
+    std::cout << "  BinaryenSetFlexibleInlineMaxSize(" << size << ");\n";
+  }
+
+  globalPassOptions.inlining.flexibleInlineMaxSize = size;
+}
+
+BinaryenIndex BinaryenGetOneCallerInlineMaxSize(void) {
+  if (tracing) {
+    std::cout << "  BinaryenGetOneCallerInlineMaxSize();\n";
+  }
+
+  return globalPassOptions.inlining.oneCallerInlineMaxSize;
+}
+
+void BinaryenSetOneCallerInlineMaxSize(BinaryenIndex size) {
+  if (tracing) {
+    std::cout << "  BinaryenSetOneCallerInlineMaxSize(" << size << ");\n";
+  }
+
+  globalPassOptions.inlining.oneCallerInlineMaxSize = size;
+}
+
 void BinaryenModuleRunPasses(BinaryenModuleRef module,
                              const char** passes,
                              BinaryenIndex numPasses) {
diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index 66a68e8d2..39e0aca33 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -1304,6 +1304,30 @@ BINARYEN_API void BinaryenSetPassArgument(const char* name, const char* value);
 // Applies to all modules, globally.
 BINARYEN_API void BinaryenClearPassArguments();
 
+// Gets the function size at which we always inline.
+// Applies to all modules, globally.
+BINARYEN_API BinaryenIndex BinaryenGetAlwaysInlineMaxSize(void);
+
+// Sets the function size at which we always inline.
+// Applies to all modules, globally.
+BINARYEN_API void BinaryenSetAlwaysInlineMaxSize(BinaryenIndex size);
+
+// Gets the function size which we inline when functions are lightweight.
+// Applies to all modules, globally.
+BINARYEN_API BinaryenIndex BinaryenGetFlexibleInlineMaxSize(void);
+
+// Sets the function size which we inline when functions are lightweight.
+// Applies to all modules, globally.
+BINARYEN_API void BinaryenSetFlexibleInlineMaxSize(BinaryenIndex size);
+
+// Gets the function size which we inline when there is only one caller.
+// Applies to all modules, globally.
+BINARYEN_API BinaryenIndex BinaryenGetOneCallerInlineMaxSize(void);
+
+// Sets the function size which we inline when there is only one caller.
+// Applies to all modules, globally.
+BINARYEN_API void BinaryenSetOneCallerInlineMaxSize(BinaryenIndex size);
+
 // Runs the specified passes on the module. Uses the currently set global
 // optimize and shrink level.
 BINARYEN_API void BinaryenModuleRunPasses(BinaryenModuleRef module,
diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index d41e9575b..3ef19fd7d 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -2928,6 +2928,36 @@ Module['clearPassArguments'] = function() {
   Module['_BinaryenClearPassArguments']();
 };
 
+// Gets the function size at which we always inline.
+Module['getAlwaysInlineMaxSize'] = function() {
+  return Module['_BinaryenGetAlwaysInlineMaxSize']();
+};
+
+// Sets the function size at which we always inline.
+Module['setAlwaysInlineMaxSize'] = function(size) {
+  Module['_BinaryenSetAlwaysInlineMaxSize'](size);
+};
+
+// Gets the function size which we inline when functions are lightweight.
+Module['getFlexibleInlineMaxSize'] = function() {
+  return Module['_BinaryenGetFlexibleInlineMaxSize']();
+};
+
+// Sets the function size which we inline when functions are lightweight.
+Module['setFlexibleInlineMaxSize'] = function(size) {
+  Module['_BinaryenSetFlexibleInlineMaxSize'](size);
+};
+
+// Gets the function size which we inline when there is only one caller.
+Module['getOneCallerInlineMaxSize'] = function() {
+  return Module['_BinaryenGetOneCallerInlineMaxSize']();
+};
+
+// Sets the function size which we inline when there is only one caller.
+Module['setOneCallerInlineMaxSize'] = function(size) {
+  Module['_BinaryenSetOneCallerInlineMaxSize'](size);
+};
+
 // Enables or disables C-API tracing
 Module['setAPITracing'] = function(on) {
   return Module['_BinaryenSetAPITracing'](on);
diff --git a/test/binaryen.js/inlining-options.js b/test/binaryen.js/inlining-options.js
new file mode 100644
index 000000000..7884f0ed4
--- /dev/null
+++ b/test/binaryen.js/inlining-options.js
@@ -0,0 +1,15 @@
+binaryen.setAPITracing(true);
+
+console.log("// alwaysInlineMaxSize=" + binaryen.getAlwaysInlineMaxSize());
+binaryen.setAlwaysInlineMaxSize(11);
+assert(binaryen.getAlwaysInlineMaxSize() == 11);
+
+console.log("// flexibleInlineMaxSize=" + binaryen.getFlexibleInlineMaxSize());
+binaryen.setFlexibleInlineMaxSize(22);
+assert(binaryen.getFlexibleInlineMaxSize() == 22);
+
+console.log("// oneCallerInlineMaxSize=" + binaryen.getOneCallerInlineMaxSize());
+binaryen.setOneCallerInlineMaxSize(33);
+assert(binaryen.getOneCallerInlineMaxSize() == 33);
+
+binaryen.setAPITracing(false);
diff --git a/test/binaryen.js/inlining-options.js.txt b/test/binaryen.js/inlining-options.js.txt
new file mode 100644
index 000000000..4993fd0d6
--- /dev/null
+++ b/test/binaryen.js/inlining-options.js.txt
@@ -0,0 +1,28 @@
+// beginning a Binaryen API trace
+#include <math.h>
+#include <map>
+#include "binaryen-c.h"
+int main() {
+  std::map<size_t, BinaryenExpressionRef> expressions;
+  std::map<size_t, BinaryenFunctionRef> functions;
+  std::map<size_t, BinaryenGlobalRef> globals;
+  std::map<size_t, BinaryenEventRef> events;
+  std::map<size_t, BinaryenExportRef> exports;
+  std::map<size_t, RelooperBlockRef> relooperBlocks;
+  BinaryenModuleRef the_module = NULL;
+  RelooperRef the_relooper = NULL;
+  BinaryenGetAlwaysInlineMaxSize();
+// alwaysInlineMaxSize=2
+  BinaryenSetAlwaysInlineMaxSize(11);
+  BinaryenGetAlwaysInlineMaxSize();
+  BinaryenGetFlexibleInlineMaxSize();
+// flexibleInlineMaxSize=20
+  BinaryenSetFlexibleInlineMaxSize(22);
+  BinaryenGetFlexibleInlineMaxSize();
+  BinaryenGetOneCallerInlineMaxSize();
+// oneCallerInlineMaxSize=15
+  BinaryenSetOneCallerInlineMaxSize(33);
+  BinaryenGetOneCallerInlineMaxSize();
+  return 0;
+}
+// ending a Binaryen API trace