================
@@ -126,4 +126,57 @@ PPC_LNX_CPU("power10",47)
#undef PPC_LNX_DEFINE_OFFSETS
#undef PPC_LNX_FEATURE
#undef PPC_LNX_CPU
+
+// Definition of following value 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 COMP_OP 2
+
+#define OP_EQ 0
+
+#endif
+
+//The value of SUPPORT is COMP_OP, it means the feature depend on the
V(INDEX)&MASK OP VALUE
+//If the value of MASK is zero, it means we do not need to do mask, just check
V(INDEX) OP VALUE.
----------------
amy-kwan wrote:
```suggestion
// The value of SUPPORT is COMP_OP. This means that the feature depends on the
V(INDEX)&MASK OP VALUE.
// If the value of MASK is zero, it means we do not need to do the mask, and
just checking V(INDEX) OP VALUE is sufficient.
```
Maybe something like this is a bit more clear?
https://github.com/llvm/llvm-project/pull/80069
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