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Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47703 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-02-28 00:43:03 +00:00
parent 41ce5b82da
commit fb8075d03f
25 changed files with 173 additions and 50 deletions
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2
lib/CodeGen/BranchFolding.cpp
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@@ -44,7 +44,7 @@ namespace {
cl::desc("Max number of predecessors to consider tail merging"),
cl::init(100), cl::Hidden);
struct BranchFolder : public MachineFunctionPass {
struct VISIBILITY_HIDDEN BranchFolder : public MachineFunctionPass {
static char ID;
explicit BranchFolder(bool defaultEnableTailMerge) :
MachineFunctionPass((intptr_t)&ID) {