String constants are store in a table to limit variable count

5 files changed, 21 insertions, 4 deletions

diff --git a/src/intertyper.js b/src/intertyper.js
index d295a872..010b0d71 100644
--- a/src/intertyper.js
+++ b/src/intertyper.js
@@ -83,10 +83,12 @@ function intertyper(data, sidePass, baseLineNums) {
             var global = /([@%\w\d\.\" ]+) = .*/.exec(line);
             var globalIdent = toNiceIdent(global[1]);
             var testAlias = /[@%\w\d\.\" ]+ = alias .*/.exec(line);
+            var testString = /^[^"]+c\"[^"]+"/.exec( line );
             Variables.globals[globalIdent] = {
               name: globalIdent,
               alias: !!testAlias,
-              impl: VAR_EMULATED
+              impl: VAR_EMULATED,
+              isString : !!testString
             };
             unparsedGlobals.lines.push(line);
           } else {
diff --git a/src/jsifier.js b/src/jsifier.js
index 69a64d1a..6548e87f 100644
--- a/src/jsifier.js
+++ b/src/jsifier.js
@@ -247,7 +247,8 @@ function JSify(data, functionsOnly, givenFunctions) {
   substrate.addActor('GlobalVariable', {
     processItem: function(item) {
       function needsPostSet(value) {
-        return value[0] in UNDERSCORE_OPENPARENS || value.substr(0, 14) === 'CHECK_OVERFLOW';
+        return value[0] in UNDERSCORE_OPENPARENS || value.substr(0, 14) === 'CHECK_OVERFLOW'
+            || value.substr(0, 13) === 'STRING_TABLE.';
       }
 
       item.intertype = 'GlobalVariableStub';
@@ -264,7 +265,9 @@ function JSify(data, functionsOnly, givenFunctions) {
           // they would shadow similarly-named globals in the parent.
           item.JS = '';
         } else {
-          item.JS = 'var ' + item.ident + ';';
+          if(!(item.ident in Variables.globals ) || !Variables.globals[item.ident].isString) {
+          	item.JS = 'var ' + item.ident + ';';
+          } 
         }
         var constant = null;
         if (item.external) {
@@ -313,7 +316,13 @@ function JSify(data, functionsOnly, givenFunctions) {
           //       allocations in a shared library.
           constant = makePointer(constant, null, BUILD_AS_SHARED_LIB ? 'ALLOC_NORMAL' : 'ALLOC_STATIC', item.type);
 
-          var js = item.ident + '=' + constant + ';';
+          var js;
+          
+          if(Variables.globals[ item.ident ].isString) {
+            js = 'STRING_TABLE.' + item.ident + '=' + constant + ';';
+          } else {
+          	js = item.ident + '=' + constant + ';';
+          }
           // Special case: class vtables. We make sure they are null-terminated, to allow easy runtime operations
           if (item.ident.substr(0, 5) == '__ZTV') {
             js += '\n' + makePointer('[0]', null, BUILD_AS_SHARED_LIB ? 'ALLOC_NORMAL' : 'ALLOC_STATIC', ['void*']) + ';';
diff --git a/src/parseTools.js b/src/parseTools.js
index 18ce807e..0eaf4e0b 100644
--- a/src/parseTools.js
+++ b/src/parseTools.js
@@ -1434,6 +1434,9 @@ function finalizeLLVMParameter(param, noIndexizeFunctions) {
     }
   } else if (param.intertype == 'value') {
     ret = param.ident;
+    if(ret in Variables.globals && Variables.globals[ret].isString) {
+      ret = "STRING_TABLE." + ret;
+    }
     if (param.type == 'i64' && I64_MODE == 1) {
       ret = parseI64Constant(ret);
     }
diff --git a/src/preamble.js b/src/preamble.js
index 5c5c21ea..b9da766f 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -750,6 +750,8 @@ function intArrayToString(array) {
 }
 Module['intArrayToString'] = intArrayToString;
 
+var STRING_TABLE = [];
+
 {{{ unSign }}}
 {{{ reSign }}}
 
diff --git a/src/preamble_sharedlib.js b/src/preamble_sharedlib.js
index 2a071f6b..af204e2f 100644
--- a/src/preamble_sharedlib.js
+++ b/src/preamble_sharedlib.js
@@ -16,6 +16,7 @@ function callRuntimeCallbacks(callbacks) {
 }
 
 var __ATINIT__ = []; // functions called during startup
+var STRING_TABLE = [];
 
 function initRuntime() {
   callRuntimeCallbacks(__ATINIT__);