Title: [148850] branches/dfgFourthTier
Revision
148850
Author
[email protected]
Date
2013-04-21 16:59:43 -0700 (Sun, 21 Apr 2013)

Log Message

fourthTier: WebKit's build system should relink _javascript_Core if LLVM's libraries changed but its headers didn't
https://bugs.webkit.org/show_bug.cgi?id=114926

Source/_javascript_Core: 

Reviewed by Geoffrey Garen.
        
Use a phony file that includes a phony header to force _javascript_Core to be relinked
if necessary. The external LLVM-importing scripts will touch the header if the libraries
are known to have changed.

* _javascript_Core.xcodeproj/project.pbxproj:
* ftl/WebKitLLVMLibraryAnchor.cpp: Added.

Tools: 

Reviewed by Geoffrey Garen.
        
If the LLVM libraries change, then touch a phony header, which will force relink
of _javascript_Core.

* Scripts/copy-webkitlibraries-to-product-directory:
(unpackIfNecessary):

Modified Paths

Added Paths

Diff

Modified: branches/dfgFourthTier/Source/_javascript_Core/ChangeLog (148849 => 148850)


--- branches/dfgFourthTier/Source/_javascript_Core/ChangeLog	2013-04-21 23:26:56 UTC (rev 148849)
+++ branches/dfgFourthTier/Source/_javascript_Core/ChangeLog	2013-04-21 23:59:43 UTC (rev 148850)
@@ -1,5 +1,19 @@
 2013-04-21  Filip Pizlo  <[email protected]>
 
+        fourthTier: WebKit's build system should relink _javascript_Core if LLVM's libraries changed but its headers didn't
+        https://bugs.webkit.org/show_bug.cgi?id=114926
+
+        Reviewed by Geoffrey Garen.
+        
+        Use a phony file that includes a phony header to force _javascript_Core to be relinked
+        if necessary. The external LLVM-importing scripts will touch the header if the libraries
+        are known to have changed.
+
+        * _javascript_Core.xcodeproj/project.pbxproj:
+        * ftl/WebKitLLVMLibraryAnchor.cpp: Added.
+
+2013-04-21  Filip Pizlo  <[email protected]>
+
         fourthTier: It should be possible to query WatchpointSets, and add Watchpoints, even if the compiler is running in another thread
         https://bugs.webkit.org/show_bug.cgi?id=114909
 

Modified: branches/dfgFourthTier/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj (148849 => 148850)


--- branches/dfgFourthTier/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj	2013-04-21 23:26:56 UTC (rev 148849)
+++ branches/dfgFourthTier/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj	2013-04-21 23:59:43 UTC (rev 148850)
@@ -190,6 +190,7 @@
 		0F63948515E4811B006A597C /* DFGArrayMode.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F63948215E48114006A597C /* DFGArrayMode.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		0F66E16B14DF3F1600B7B2E4 /* DFGAdjacencyList.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F66E16814DF3F1300B7B2E4 /* DFGAdjacencyList.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		0F66E16C14DF3F1600B7B2E4 /* DFGEdge.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F66E16914DF3F1300B7B2E4 /* DFGEdge.h */; settings = {ATTRIBUTES = (Private, ); }; };
+		0F6E5C191724AF3D005C574F /* WebKitLLVMLibraryAnchor.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F6E5C181724AF3D005C574F /* WebKitLLVMLibraryAnchor.cpp */; };
 		0F7025A91714B0FA00382C0E /* DFGOSRExitCompilerCommon.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F7025A71714B0F800382C0E /* DFGOSRExitCompilerCommon.cpp */; };
 		0F7025AA1714B0FC00382C0E /* DFGOSRExitCompilerCommon.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F7025A81714B0F800382C0E /* DFGOSRExitCompilerCommon.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		0F714CA416EA92F000F3EBEB /* DFGBackwardsPropagationPhase.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F714CA116EA92ED00F3EBEB /* DFGBackwardsPropagationPhase.cpp */; };
@@ -1151,6 +1152,7 @@
 		0F63948215E48114006A597C /* DFGArrayMode.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = DFGArrayMode.h; path = dfg/DFGArrayMode.h; sourceTree = "<group>"; };
 		0F66E16814DF3F1300B7B2E4 /* DFGAdjacencyList.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = DFGAdjacencyList.h; path = dfg/DFGAdjacencyList.h; sourceTree = "<group>"; };
 		0F66E16914DF3F1300B7B2E4 /* DFGEdge.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = DFGEdge.h; path = dfg/DFGEdge.h; sourceTree = "<group>"; };
+		0F6E5C181724AF3D005C574F /* WebKitLLVMLibraryAnchor.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = WebKitLLVMLibraryAnchor.cpp; path = ftl/WebKitLLVMLibraryAnchor.cpp; sourceTree = "<group>"; };
 		0F7025A71714B0F800382C0E /* DFGOSRExitCompilerCommon.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = DFGOSRExitCompilerCommon.cpp; path = dfg/DFGOSRExitCompilerCommon.cpp; sourceTree = "<group>"; };
 		0F7025A81714B0F800382C0E /* DFGOSRExitCompilerCommon.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = DFGOSRExitCompilerCommon.h; path = dfg/DFGOSRExitCompilerCommon.h; sourceTree = "<group>"; };
 		0F714CA116EA92ED00F3EBEB /* DFGBackwardsPropagationPhase.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = DFGBackwardsPropagationPhase.cpp; path = dfg/DFGBackwardsPropagationPhase.cpp; sourceTree = "<group>"; };
@@ -2129,6 +2131,7 @@
 				0F235BCE17178E1C00690C7F /* FTLValueFormat.h */,
 				0F235BCF17178E1C00690C7F /* FTLValueSource.cpp */,
 				0F235BD017178E1C00690C7F /* FTLValueSource.h */,
+				0F6E5C181724AF3D005C574F /* WebKitLLVMLibraryAnchor.cpp */,
 			);
 			name = ftl;
 			sourceTree = "<group>";
@@ -3977,6 +3980,7 @@
 				147F39BE107EC37600427A48 /* Arguments.cpp in Sources */,
 				86D3B2C310156BDE002865E7 /* ARMAssembler.cpp in Sources */,
 				0F7025A91714B0FA00382C0E /* DFGOSRExitCompilerCommon.cpp in Sources */,
+				0F6E5C191724AF3D005C574F /* WebKitLLVMLibraryAnchor.cpp in Sources */,
 				A74DE1D0120B875600D40D5B /* ARMv7Assembler.cpp in Sources */,
 				0F8335B71639C1E6001443B5 /* ArrayAllocationProfile.cpp in Sources */,
 				147F39BF107EC37600427A48 /* ArrayConstructor.cpp in Sources */,

Added: branches/dfgFourthTier/Source/_javascript_Core/ftl/WebKitLLVMLibraryAnchor.cpp (0 => 148850)


--- branches/dfgFourthTier/Source/_javascript_Core/ftl/WebKitLLVMLibraryAnchor.cpp	                        (rev 0)
+++ branches/dfgFourthTier/Source/_javascript_Core/ftl/WebKitLLVMLibraryAnchor.cpp	2013-04-21 23:59:43 UTC (rev 148850)
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+
+// This is a hack for ensuring that the build system relinks _javascript_Core if any
+// of the LLVM libraries are known to have changed.
+#include "WebKitLLVMLibraryToken.h"

Modified: branches/dfgFourthTier/Tools/ChangeLog (148849 => 148850)


--- branches/dfgFourthTier/Tools/ChangeLog	2013-04-21 23:26:56 UTC (rev 148849)
+++ branches/dfgFourthTier/Tools/ChangeLog	2013-04-21 23:59:43 UTC (rev 148850)
@@ -1,5 +1,18 @@
 2013-04-21  Filip Pizlo  <[email protected]>
 
+        fourthTier: WebKit's build system should relink _javascript_Core if LLVM's libraries changed but its headers didn't
+        https://bugs.webkit.org/show_bug.cgi?id=114926
+
+        Reviewed by Geoffrey Garen.
+        
+        If the LLVM libraries change, then touch a phony header, which will force relink
+        of _javascript_Core.
+
+        * Scripts/copy-webkitlibraries-to-product-directory:
+        (unpackIfNecessary):
+
+2013-04-21  Filip Pizlo  <[email protected]>
+
         fourthTier: developing LLVM in tandem with WebKit should be fun and easy
         https://bugs.webkit.org/show_bug.cgi?id=114925
 

Modified: branches/dfgFourthTier/Tools/Scripts/copy-webkitlibraries-to-product-directory (148849 => 148850)


--- branches/dfgFourthTier/Tools/Scripts/copy-webkitlibraries-to-product-directory	2013-04-21 23:26:56 UTC (rev 148849)
+++ branches/dfgFourthTier/Tools/Scripts/copy-webkitlibraries-to-product-directory	2013-04-21 23:59:43 UTC (rev 148850)
@@ -93,7 +93,9 @@
                 (system($ranlib, $targetDir . "/" . $library) == 0) or die;
             }
         }
+        return 1;
     }
+    return 0;
 }
 
 sub fileContains
@@ -115,6 +117,8 @@
     return $contents eq $string;
 }
 
+my $shouldUpdateLLVMLibraryToken;
+
 if ($useOwnLLVM) {
     print("Building LLVM.\n");
     chdir $ownLLVMDirectory;
@@ -136,6 +140,7 @@
     
     my $librarySourceDirectory = "$ownLLVMDirectory/$ownLLVMBuildMode/lib";
     my $libraryTargetDirectory = $productDir;
+    $shouldUpdateLLVMLibraryToken = 0;
     print("Symlinking libraries from $librarySourceDirectory to $libraryTargetDirectory\n");
     opendir (my $dirHandle, $librarySourceDirectory);
     while (my $filename = readdir($dirHandle)) {
@@ -154,11 +159,13 @@
             (open my $fileHandle, ">", $ranlibToken) or die;
             print {$fileHandle} "$sourceLibrary";
             close $fileHandle;
+            $shouldUpdateLLVMLibraryToken = 1;
         }
     }
     closedir $dirHandle;
 } else {
-    unpackIfNecessary($productDir, "$productDir/libLLVMCore.a", $llvmLibraryPackage, 1);
+    $shouldUpdateLLVMLibraryToken =
+        unpackIfNecessary($productDir, "$productDir/libLLVMCore.a", $llvmLibraryPackage, 1);
 }
 
 sub dittoHeaders
@@ -182,3 +189,10 @@
     unpackIfNecessary("$productDir/usr/local/include", "$productDir/usr/local/include/llvm-c/Core.h", $llvmIncludePackage, 0);
 }
 
+my $llvmLibraryToken = "$productDir/usr/local/include/WebKitLLVMLibraryToken.h";
+if ($shouldUpdateLLVMLibraryToken || !-e $llvmLibraryToken) {
+    (open my $fileHandle, ">", $llvmLibraryToken) or die;
+    print {$fileHandle} "/* This file fools WebKit's build system into relinking _javascript_Core if the LLVM libraries changed. */\n";
+    close $fileHandle;
+}
+
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