================
@@ -546,11 +567,51 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned
builtinID,
case X86::BI__builtin_ia32_kshiftliqi:
case X86::BI__builtin_ia32_kshiftlihi:
case X86::BI__builtin_ia32_kshiftlisi:
- case X86::BI__builtin_ia32_kshiftlidi:
+ case X86::BI__builtin_ia32_kshiftlidi: {
+ unsigned shiftVal =
+ ops[1].getDefiningOp<cir::ConstantOp>().getIntValue().getZExtValue() &
+ 0xff;
+ auto numElems = cast<cir::IntType>(ops[0].getType()).getWidth();
+
+ if (shiftVal >= numElems)
+ return builder.getNullValue(ops[0].getType(),
getLoc(expr->getExprLoc()));
+
+ mlir::Value in = getMaskVecValue(*this, expr, ops[0], numElems);
+
+ SmallVector<int64_t, 64> indices;
+ for (auto i : llvm::seq<unsigned>(0, numElems))
+ indices.push_back(numElems + i - shiftVal);
+
+ mlir::Value zero =
+ builder.getNullValue(in.getType(), getLoc(expr->getExprLoc()));
+ mlir::Value sv =
+ builder.createVecShuffle(getLoc(expr->getExprLoc()), zero, in,
indices);
+ return builder.createBitcast(sv, ops[0].getType());
+ }
case X86::BI__builtin_ia32_kshiftriqi:
case X86::BI__builtin_ia32_kshiftrihi:
case X86::BI__builtin_ia32_kshiftrisi:
- case X86::BI__builtin_ia32_kshiftridi:
+ case X86::BI__builtin_ia32_kshiftridi: {
+ unsigned shiftVal =
+ ops[1].getDefiningOp<cir::ConstantOp>().getIntValue().getZExtValue() &
+ 0xff;
+ auto numElems = cast<cir::IntType>(ops[0].getType()).getWidth();
+
+ if (shiftVal >= numElems)
+ return builder.getNullValue(ops[0].getType(),
getLoc(expr->getExprLoc()));
----------------
andykaylor wrote:
The tests don't exercise this case.
https://github.com/llvm/llvm-project/pull/168591
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