================
@@ -126,4 +126,53 @@ PPC_LNX_CPU("power10",47)
#undef PPC_LNX_DEFINE_OFFSETS
#undef PPC_LNX_FEATURE
#undef PPC_LNX_CPU
+
+// Definition of the following values are found in the AIX header file:
<systemcfg.h>.
+#ifndef AIX_POWERPC_SYS_CONF
+#define AIX_POWERPC_SYS_CONF
+ #define AIX_SYSCON_IMPL_IDX 1
+ #define AIX_PPC7_VALUE 0x00008000
+ #define AIX_PPC8_VALUE 0x00010000
+ #define AIX_PPC9_VALUE 0x00020000
+ #define AIX_PPC10_VALUE 0x00040000
+
+ #define AIX_BUILTIN_PPC_TRUE 1
+ #define AIX_BUILTIN_PPC_FALSE 0
+ #define SYS_CONF 2
+
+ #define COMP_EQ 0
+
+#endif
+
+// When the value of SUPPORT_MAGIC is SYS_CONF, the return value depends on
the
+// _system_configuration[INDEX] COMPARE_OP VALUE.
+#ifndef PPC_AIX_CPU
+ #define PPC_AIX_CPU(NAME, SUPPORT_MAGIC, INDEX, COMPARE_OP, VALUE)
----------------
amy-kwan wrote:
Change we update this to the following, since it may be more clear?
```
#define PPC_AIX_CPU(NAME, SUPPORT_METHOD, SYS_CFG_INDEX, COMPARE_OP,
SYS_CFG_VALUE)
```
https://github.com/llvm/llvm-project/pull/80069
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