Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 50014b3..8acf779 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -714,6 +714,7 @@
maxStoresPerMemcpy = 16; // For %llvm.memcpy -> sequence of stores
maxStoresPerMemmove = 16; // For %llvm.memmove -> sequence of stores
allowUnalignedMemoryAccesses = true; // x86 supports it!
+ setPrefLoopAlignment(16);
}
/// getMaxByValAlign - Helper for getByValTypeAlignment to determine