Rebase [to squash]

Updated to match the implemented LLVM attribute names recognised by
the SMEAttrs class.

Author: sdesmalen-arm

clang/lib/CodeGen/CGCall.cpp

@@ -1785,13 +1785,13 @@ static void AddAttributesFromFunctionProtoType(ASTContext &Ctx,
 
   // ZT0
   if (FunctionType::getArmZT0State(SMEBits) == FunctionType::ARM_Preserves)
-    FuncAttrs.addAttribute("aarch64_zt0_preserved");
+    FuncAttrs.addAttribute("aarch64_preserves_zt0");
   if (FunctionType::getArmZT0State(SMEBits) == FunctionType::ARM_In)
-    FuncAttrs.addAttribute("aarch64_zt0_in");
+    FuncAttrs.addAttribute("aarch64_in_zt0");
   if (FunctionType::getArmZT0State(SMEBits) == FunctionType::ARM_Out)
-    FuncAttrs.addAttribute("aarch64_zt0_out");
+    FuncAttrs.addAttribute("aarch64_out_zt0");
   if (FunctionType::getArmZT0State(SMEBits) == FunctionType::ARM_InOut)
-    FuncAttrs.addAttribute("aarch64_zt0_inout");
+    FuncAttrs.addAttribute("aarch64_inout_zt0");
 }
 
 static void AddAttributesFromAssumes(llvm::AttrBuilder &FuncAttrs,

clang/lib/CodeGen/CodeGenModule.cpp

@@ -2416,7 +2416,7 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
     if (Attr->isNewZA())
       B.addAttribute("aarch64_pstate_za_new");
     if (Attr->isNewZT0())
-      B.addAttribute("aarch64_zt0_new");
+      B.addAttribute("aarch64_new_zt0");
   }
 
   // Track whether we need to add the optnone LLVM attribute,

clang/test/CodeGen/aarch64-sme2-intrinsics/aarch64-sme2-attrs.cpp

@@ -50,8 +50,8 @@ __arm_new("za", "zt0") void new_za_zt0() { }
 
 }
 
-// CHECK: attributes #[[ZT0_IN]] = {{{.*}} "aarch64_zt0_in" {{.*}}}
-// CHECK: attributes #[[ZT0_OUT]] = {{{.*}} "aarch64_zt0_out" {{.*}}}
-// CHECK: attributes #[[ZT0_INOUT]] = {{{.*}} "aarch64_zt0_inout" {{.*}}}
-// CHECK: attributes #[[ZT0_PRESERVED]] = {{{.*}} "aarch64_zt0_preserved" {{.*}}}
-// CHECK: attributes #[[ZT0_NEW]] = {{{.*}} "aarch64_zt0_new" {{.*}}}
+// CHECK: attributes #[[ZT0_IN]] = {{{.*}} "aarch64_in_zt0" {{.*}}}
+// CHECK: attributes #[[ZT0_OUT]] = {{{.*}} "aarch64_out_zt0" {{.*}}}
+// CHECK: attributes #[[ZT0_INOUT]] = {{{.*}} "aarch64_inout_zt0" {{.*}}}
+// CHECK: attributes #[[ZT0_PRESERVED]] = {{{.*}} "aarch64_preserves_zt0" {{.*}}}
+// CHECK: attributes #[[ZT0_NEW]] = {{{.*}} "aarch64_new_zt0" {{.*}}}