[WebAssembly] __builtin_wasm_replace_lane_* builtins
Summary: Depends on D52852.
Reviewers: aheejin, dschuff
Subscribers: sbc100, jgravelle-google, sunfish, kristina, cfe-commits
Differential Revision: https://reviews.llvm.org/D52856
llvm-svn: 343835
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index a52efd2..04d2583 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -12474,6 +12474,34 @@
llvm_unreachable("unexpected builtin ID");
}
}
+ case WebAssembly::BI__builtin_wasm_replace_lane_i8x16:
+ case WebAssembly::BI__builtin_wasm_replace_lane_i16x8:
+ case WebAssembly::BI__builtin_wasm_replace_lane_i32x4:
+ case WebAssembly::BI__builtin_wasm_replace_lane_i64x2:
+ case WebAssembly::BI__builtin_wasm_replace_lane_f32x4:
+ case WebAssembly::BI__builtin_wasm_replace_lane_f64x2: {
+ llvm::APSInt LaneConst;
+ if (!E->getArg(1)->isIntegerConstantExpr(LaneConst, getContext()))
+ llvm_unreachable("Constant arg isn't actually constant?");
+ Value *Vec = EmitScalarExpr(E->getArg(0));
+ Value *Lane = llvm::ConstantInt::get(getLLVMContext(), LaneConst);
+ Value *Val = EmitScalarExpr(E->getArg(2));
+ switch (BuiltinID) {
+ case WebAssembly::BI__builtin_wasm_replace_lane_i8x16:
+ case WebAssembly::BI__builtin_wasm_replace_lane_i16x8: {
+ llvm::Type *ElemType = ConvertType(E->getType())->getVectorElementType();
+ Value *Trunc = Builder.CreateTrunc(Val, ElemType);
+ return Builder.CreateInsertElement(Vec, Trunc, Lane);
+ }
+ case WebAssembly::BI__builtin_wasm_replace_lane_i32x4:
+ case WebAssembly::BI__builtin_wasm_replace_lane_i64x2:
+ case WebAssembly::BI__builtin_wasm_replace_lane_f32x4:
+ case WebAssembly::BI__builtin_wasm_replace_lane_f64x2:
+ return Builder.CreateInsertElement(Vec, Val, Lane);
+ default:
+ llvm_unreachable("unexpected builtin ID");
+ }
+ }
default:
return nullptr;