[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, 14 insertions, 0 deletions

diff --git a/llvm/lib/Support/TargetParser.cpp b/llvm/lib/Support/TargetParser.cpp
index 35bb7e6b8d0..8edc26fb5e0 100644
--- a/llvm/lib/Support/TargetParser.cpp
+++ b/llvm/lib/Support/TargetParser.cpp
@@ -235,6 +235,16 @@ bool llvm::ARM::getExtensionFeatures(unsigned Extensions,
   else
     Features.push_back("-dsp");
 
+  if (Extensions & ARM::AEK_RAS)
+    Features.push_back("+ras");
+  else
+    Features.push_back("-ras");
+
+  if (Extensions & ARM::AEK_DOTPROD)
+    Features.push_back("+dotprod");
+  else
+    Features.push_back("-dotprod");
+
   return getHWDivFeatures(Extensions, Features);
 }
 
@@ -438,6 +448,8 @@ bool llvm::AArch64::getExtensionFeatures(unsigned Extensions,
     Features.push_back("+crc");
   if (Extensions & AArch64::AEK_CRYPTO)
     Features.push_back("+crypto");
+  if (Extensions & AArch64::AEK_DOTPROD)
+    Features.push_back("+dotprod");
   if (Extensions & AArch64::AEK_FP16)
     Features.push_back("+fullfp16");
   if (Extensions & AArch64::AEK_PROFILE)
@@ -448,6 +460,8 @@ bool llvm::AArch64::getExtensionFeatures(unsigned Extensions,
     Features.push_back("+lse");
   if (Extensions & AArch64::AEK_SVE)
     Features.push_back("+sve");
+  if (Extensions & AArch64::AEK_RCPC)
+    Features.push_back("+rcpc");
 
   return true;
 }