[ARM][AArch64] Cortex-A75 and Cortex-A55 support

This patch introduces support for Cortex-A75 and Cortex-A55, Arm's
latest big.LITTLE A-class cores. They implement the ARMv8.2-A
architecture, including the cryptography and RAS extensions, plus
the optional dot product extension. They also implement the RCpc
AArch64 extension from ARMv8.3-A.

Cortex-A75:
https://developer.arm.com/products/processors/cortex-a/cortex-a75

Cortex-A55:
https://developer.arm.com/products/processors/cortex-a/cortex-a55

Differential Revision: https://reviews.llvm.org/D36667

llvm-svn: 311316

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index 5d0482918e0..9fdcff333cc 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -130,10 +130,10 @@ void AArch64Subtarget::initializeProperties() {
   case CortexA53:
     PrefFunctionAlignment = 3;
     break;
+  case CortexA55: break;
   case CortexA72:
-    PrefFunctionAlignment = 4;
-    break;
   case CortexA73:
+  case CortexA75:
     PrefFunctionAlignment = 4;
     break;
   case Others: break;