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

[oota-llvm.git] / lib / Target / X86 / X86ISelLowering.cpp

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 50014b31824a1a4c4b9e5c28bbc769d4e6fdea3b..8acf779676edd02a495c83cffa59317cbe781f77 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -714,6 +714,7 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
   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