Cleanup patch set, and update README.TXT. Add three new patches.

1 files changed, 22 insertions, 0 deletions

diff --git a/contrib/llvm/patches/patch-11-llvm-r222562-loop-rotate.diff b/contrib/llvm/patches/patch-11-llvm-r222562-loop-rotate.diff
new file mode 100644
index 0000000..96a3948
--- /dev/null
+++ b/contrib/llvm/patches/patch-11-llvm-r222562-loop-rotate.diff
@@ -0,0 +1,22 @@
+Pull in r222562 from upstream llvm trunk (by Roman Divacky):
+
+  Disable header duplication at -Oz in loop-rotate pass.
+
+This helps to minimize the size of boot2.
+
+Introduced here: http://svnweb.freebsd.org/changeset/base/274968
+
+Index: lib/Transforms/IPO/PassManagerBuilder.cpp
+===================================================================
+--- lib/Transforms/IPO/PassManagerBuilder.cpp	(revision 11)
++++ lib/Transforms/IPO/PassManagerBuilder.cpp	(revision 12)
+@@ -195,7 +195,8 @@ void PassManagerBuilder::populateModulePassManager
+     MPM.add(createTailCallEliminationPass()); // Eliminate tail calls
+   MPM.add(createCFGSimplificationPass());     // Merge & remove BBs
+   MPM.add(createReassociatePass());           // Reassociate expressions
+-  MPM.add(createLoopRotatePass());            // Rotate Loop
++  // Rotate Loop - disable header duplication at -Oz
++  MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1));
+   MPM.add(createLICMPass());                  // Hoist loop invariants
+   MPM.add(createLoopUnswitchPass(SizeLevel || OptLevel < 3));
+   MPM.add(createInstructionCombiningPass());