================
@@ -16542,12 +16542,62 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned
BuiltinID,
Intrinsic::ID ID = Intrinsic::not_intrinsic;
+#include "llvm/TargetParser/PPCTargetParser.def"
+ // This lambda function converts builtin_cpu_is() into directly
+ // returning true or false, or it gets and checks the information from the
+ // kernel variable _system_configuration fromr the AIX OS.
+ auto GenAIXPPCBuiltinCpuExpr = [&](unsigned SupportMethod, unsigned FieldIdx,
+ unsigned CompOp,
+ unsigned OpValue) -> Value * {
+ if (SupportMethod == AIX_BUILTIN_PPC_FALSE)
+ return llvm::ConstantInt::getFalse(ConvertType(E->getType()));
+
+ if (SupportMethod == AIX_BUILTIN_PPC_TRUE)
+ return llvm::ConstantInt::getTrue(ConvertType(E->getType()));
+
+ assert(SupportMethod <= USE_SYS_CONF && "Invalid value for
SupportMethod.");
+ assert((CompOp == COMP_EQ) && "Only equal comparisons are supported.");
+
+ llvm::Type *STy = llvm::StructType::get(PPC_SYSTEMCONFIG_TYPE);
+ llvm::Constant *SysConf =
+ CGM.CreateRuntimeVariable(STy, "_system_configuration");
+
+ // Grab the appropriate field from _system_configuration.
+ llvm::Value *Idxs[] = {ConstantInt::get(Int32Ty, 0),
+ ConstantInt::get(Int32Ty, FieldIdx)};
+
+ llvm::Value *FieldValue = Builder.CreateGEP(STy, SysConf, Idxs);
+ FieldValue = Builder.CreateAlignedLoad(Int32Ty, FieldValue,
+ CharUnits::fromQuantity(4));
+ assert(FieldValue->getType()->isIntegerTy(32) &&
+ "Only supports 32-bit integer in the GenAIXPPCBuiltinCpuExpr.");
----------------
amy-kwan wrote:
```suggestion
"Only 32-bit integers are supported the GenAIXPPCBuiltinCpuExpr().");
```
I think this may be clearer.
https://github.com/llvm/llvm-project/pull/80069
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