================
@@ -533,9 +533,80 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned
builtinID,
case X86::BI__builtin_ia32_xsaves:
case X86::BI__builtin_ia32_xsaves64:
case X86::BI__builtin_ia32_xsetbv:
- case X86::BI_xsetbv:
+ case X86::BI_xsetbv: {
+ mlir::Location loc = getLoc(expr->getExprLoc());
+ StringRef intrinsicName;
+ switch (builtinID) {
+ default:
+ llvm_unreachable("Unexpected builtin");
+ case X86::BI__builtin_ia32_xsave:
+ intrinsicName = "x86.xsave";
+ break;
+ case X86::BI__builtin_ia32_xsave64:
+ intrinsicName = "x86.xsave64";
+ break;
+ case X86::BI__builtin_ia32_xrstor:
+ intrinsicName = "x86.xrstor";
+ break;
+ case X86::BI__builtin_ia32_xrstor64:
+ intrinsicName = "x86.xrstor64";
+ break;
+ case X86::BI__builtin_ia32_xsaveopt:
+ intrinsicName = "x86.xsaveopt";
+ break;
+ case X86::BI__builtin_ia32_xsaveopt64:
+ intrinsicName = "x86.xsaveopt64";
+ break;
+ case X86::BI__builtin_ia32_xrstors:
+ intrinsicName = "x86.xrstors";
+ break;
+ case X86::BI__builtin_ia32_xrstors64:
+ intrinsicName = "x86.xrstors64";
+ break;
+ case X86::BI__builtin_ia32_xsavec:
+ intrinsicName = "x86.xsavec";
+ break;
+ case X86::BI__builtin_ia32_xsavec64:
+ intrinsicName = "x86.xsavec64";
+ break;
+ case X86::BI__builtin_ia32_xsaves:
+ intrinsicName = "x86.xsaves";
+ break;
+ case X86::BI__builtin_ia32_xsaves64:
+ intrinsicName = "x86.xsaves64";
+ break;
+ case X86::BI__builtin_ia32_xsetbv:
+ case X86::BI_xsetbv:
+ intrinsicName = "x86.xsetbv";
+ break;
+ }
+
+ // The xsave family of instructions take a 64-bit mask that specifies
+ // which processor state components to save/restore. The hardware expects
+ // this mask split into two 32-bit registers: EDX (high 32 bits) and
+ // EAX (low 32 bits).
+ mlir::Type i32Ty = builder.getSInt32Ty();
+ mlir::Type i64Ty = builder.getSInt64Ty();
+
+ // Mhi = (uint32_t)(ops[1] >> 32) - extract high 32 bits via right shift
+ cir::ConstantOp shift32 =
+ builder.getConstant(loc, cir::IntAttr::get(i64Ty, 32));
----------------
andykaylor wrote:
```suggestion
cir::ConstantOp shift32 = builder.getSInt64(32, loc);
```
https://github.com/llvm/llvm-project/pull/170877
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