Initial check in
Bug: 137197907
diff --git a/src/librustc_codegen_llvm/builder.rs b/src/librustc_codegen_llvm/builder.rs
new file mode 100644
index 0000000..123fda1
--- /dev/null
+++ b/src/librustc_codegen_llvm/builder.rs
@@ -0,0 +1,1520 @@
+use crate::llvm::{AtomicRmwBinOp, AtomicOrdering, SynchronizationScope};
+use crate::llvm::{self, False, BasicBlock};
+use crate::common::Funclet;
+use crate::context::CodegenCx;
+use crate::type_::Type;
+use crate::type_of::LayoutLlvmExt;
+use crate::value::Value;
+use syntax::symbol::LocalInternedString;
+use rustc_codegen_ssa::common::{IntPredicate, TypeKind, RealPredicate};
+use rustc_codegen_ssa::MemFlags;
+use libc::{c_uint, c_char};
+use rustc::ty::{self, Ty, TyCtxt};
+use rustc::ty::layout::{self, Align, Size, TyLayout};
+use rustc::hir::def_id::DefId;
+use rustc::session::config;
+use rustc_data_structures::small_c_str::SmallCStr;
+use rustc_codegen_ssa::traits::*;
+use rustc_codegen_ssa::base::to_immediate;
+use rustc_codegen_ssa::mir::operand::{OperandValue, OperandRef};
+use rustc_codegen_ssa::mir::place::PlaceRef;
+use std::borrow::Cow;
+use std::ops::{Deref, Range};
+use std::ptr;
+use std::iter::TrustedLen;
+
+// All Builders must have an llfn associated with them
+#[must_use]
+pub struct Builder<'a, 'll: 'a, 'tcx: 'll> {
+ pub llbuilder: &'ll mut llvm::Builder<'ll>,
+ pub cx: &'a CodegenCx<'ll, 'tcx>,
+}
+
+impl Drop for Builder<'a, 'll, 'tcx> {
+ fn drop(&mut self) {
+ unsafe {
+ llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _));
+ }
+ }
+}
+
+// This is a really awful way to get a zero-length c-string, but better (and a
+// lot more efficient) than doing str::as_c_str("", ...) every time.
+fn noname() -> *const c_char {
+ static CNULL: c_char = 0;
+ &CNULL
+}
+
+impl BackendTypes for Builder<'_, 'll, 'tcx> {
+ type Value = <CodegenCx<'ll, 'tcx> as BackendTypes>::Value;
+ type BasicBlock = <CodegenCx<'ll, 'tcx> as BackendTypes>::BasicBlock;
+ type Type = <CodegenCx<'ll, 'tcx> as BackendTypes>::Type;
+ type Funclet = <CodegenCx<'ll, 'tcx> as BackendTypes>::Funclet;
+
+ type DIScope = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIScope;
+}
+
+impl ty::layout::HasDataLayout for Builder<'_, '_, '_> {
+ fn data_layout(&self) -> &ty::layout::TargetDataLayout {
+ self.cx.data_layout()
+ }
+}
+
+impl ty::layout::HasTyCtxt<'tcx> for Builder<'_, '_, 'tcx> {
+ fn tcx<'a>(&'a self) -> TyCtxt<'a, 'tcx, 'tcx> {
+ self.cx.tcx
+ }
+}
+
+impl ty::layout::LayoutOf for Builder<'_, '_, 'tcx> {
+ type Ty = Ty<'tcx>;
+ type TyLayout = TyLayout<'tcx>;
+
+ fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
+ self.cx.layout_of(ty)
+ }
+}
+
+impl Deref for Builder<'_, 'll, 'tcx> {
+ type Target = CodegenCx<'ll, 'tcx>;
+
+ fn deref(&self) -> &Self::Target {
+ self.cx
+ }
+}
+
+impl HasCodegen<'tcx> for Builder<'_, 'll, 'tcx> {
+ type CodegenCx = CodegenCx<'ll, 'tcx>;
+}
+
+impl BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
+ fn new_block<'b>(
+ cx: &'a CodegenCx<'ll, 'tcx>,
+ llfn: &'ll Value,
+ name: &'b str
+ ) -> Self {
+ let mut bx = Builder::with_cx(cx);
+ let llbb = unsafe {
+ let name = SmallCStr::new(name);
+ llvm::LLVMAppendBasicBlockInContext(
+ cx.llcx,
+ llfn,
+ name.as_ptr()
+ )
+ };
+ bx.position_at_end(llbb);
+ bx
+ }
+
+ fn with_cx(cx: &'a CodegenCx<'ll, 'tcx>) -> Self {
+ // Create a fresh builder from the crate context.
+ let llbuilder = unsafe {
+ llvm::LLVMCreateBuilderInContext(cx.llcx)
+ };
+ Builder {
+ llbuilder,
+ cx,
+ }
+ }
+
+ fn build_sibling_block<'b>(&self, name: &'b str) -> Self {
+ Builder::new_block(self.cx, self.llfn(), name)
+ }
+
+ fn llbb(&self) -> &'ll BasicBlock {
+ unsafe {
+ llvm::LLVMGetInsertBlock(self.llbuilder)
+ }
+ }
+
+ fn position_at_end(&mut self, llbb: &'ll BasicBlock) {
+ unsafe {
+ llvm::LLVMPositionBuilderAtEnd(self.llbuilder, llbb);
+ }
+ }
+
+ fn ret_void(&mut self) {
+ self.count_insn("retvoid");
+ unsafe {
+ llvm::LLVMBuildRetVoid(self.llbuilder);
+ }
+ }
+
+ fn ret(&mut self, v: &'ll Value) {
+ self.count_insn("ret");
+ unsafe {
+ llvm::LLVMBuildRet(self.llbuilder, v);
+ }
+ }
+
+ fn br(&mut self, dest: &'ll BasicBlock) {
+ self.count_insn("br");
+ unsafe {
+ llvm::LLVMBuildBr(self.llbuilder, dest);
+ }
+ }
+
+ fn cond_br(
+ &mut self,
+ cond: &'ll Value,
+ then_llbb: &'ll BasicBlock,
+ else_llbb: &'ll BasicBlock,
+ ) {
+ self.count_insn("condbr");
+ unsafe {
+ llvm::LLVMBuildCondBr(self.llbuilder, cond, then_llbb, else_llbb);
+ }
+ }
+
+ fn switch(
+ &mut self,
+ v: &'ll Value,
+ else_llbb: &'ll BasicBlock,
+ cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)> + TrustedLen,
+ ) {
+ let switch = unsafe {
+ llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, cases.len() as c_uint)
+ };
+ for (on_val, dest) in cases {
+ let on_val = self.const_uint_big(self.val_ty(v), on_val);
+ unsafe {
+ llvm::LLVMAddCase(switch, on_val, dest)
+ }
+ }
+ }
+
+ fn invoke(
+ &mut self,
+ llfn: &'ll Value,
+ args: &[&'ll Value],
+ then: &'ll BasicBlock,
+ catch: &'ll BasicBlock,
+ funclet: Option<&Funclet<'ll>>,
+ ) -> &'ll Value {
+ self.count_insn("invoke");
+
+ debug!("Invoke {:?} with args ({:?})",
+ llfn,
+ args);
+
+ let args = self.check_call("invoke", llfn, args);
+ let bundle = funclet.map(|funclet| funclet.bundle());
+ let bundle = bundle.as_ref().map(|b| &*b.raw);
+
+ unsafe {
+ llvm::LLVMRustBuildInvoke(self.llbuilder,
+ llfn,
+ args.as_ptr(),
+ args.len() as c_uint,
+ then,
+ catch,
+ bundle,
+ noname())
+ }
+ }
+
+ fn unreachable(&mut self) {
+ self.count_insn("unreachable");
+ unsafe {
+ llvm::LLVMBuildUnreachable(self.llbuilder);
+ }
+ }
+
+ /* Arithmetic */
+ fn add(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("add");
+ unsafe {
+ llvm::LLVMBuildAdd(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fadd(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fadd");
+ unsafe {
+ llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fadd_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fadd");
+ unsafe {
+ let instr = llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, noname());
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+
+ fn sub(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("sub");
+ unsafe {
+ llvm::LLVMBuildSub(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fsub(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fsub");
+ unsafe {
+ llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fsub_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fsub");
+ unsafe {
+ let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, noname());
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+
+ fn mul(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("mul");
+ unsafe {
+ llvm::LLVMBuildMul(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fmul(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fmul");
+ unsafe {
+ llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fmul_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fmul");
+ unsafe {
+ let instr = llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, noname());
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+
+
+ fn udiv(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("udiv");
+ unsafe {
+ llvm::LLVMBuildUDiv(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn exactudiv(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("exactudiv");
+ unsafe {
+ llvm::LLVMBuildExactUDiv(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn sdiv(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("sdiv");
+ unsafe {
+ llvm::LLVMBuildSDiv(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn exactsdiv(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("exactsdiv");
+ unsafe {
+ llvm::LLVMBuildExactSDiv(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fdiv(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fdiv");
+ unsafe {
+ llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn fdiv_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fdiv");
+ unsafe {
+ let instr = llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, noname());
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+
+ fn urem(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("urem");
+ unsafe {
+ llvm::LLVMBuildURem(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn srem(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("srem");
+ unsafe {
+ llvm::LLVMBuildSRem(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn frem(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("frem");
+ unsafe {
+ llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn frem_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("frem");
+ unsafe {
+ let instr = llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, noname());
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+
+ fn shl(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("shl");
+ unsafe {
+ llvm::LLVMBuildShl(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn lshr(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("lshr");
+ unsafe {
+ llvm::LLVMBuildLShr(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn ashr(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("ashr");
+ unsafe {
+ llvm::LLVMBuildAShr(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn and(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("and");
+ unsafe {
+ llvm::LLVMBuildAnd(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn or(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("or");
+ unsafe {
+ llvm::LLVMBuildOr(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn xor(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("xor");
+ unsafe {
+ llvm::LLVMBuildXor(self.llbuilder, lhs, rhs, noname())
+ }
+ }
+
+ fn neg(&mut self, v: &'ll Value) -> &'ll Value {
+ self.count_insn("neg");
+ unsafe {
+ llvm::LLVMBuildNeg(self.llbuilder, v, noname())
+ }
+ }
+
+ fn fneg(&mut self, v: &'ll Value) -> &'ll Value {
+ self.count_insn("fneg");
+ unsafe {
+ llvm::LLVMBuildFNeg(self.llbuilder, v, noname())
+ }
+ }
+
+ fn not(&mut self, v: &'ll Value) -> &'ll Value {
+ self.count_insn("not");
+ unsafe {
+ llvm::LLVMBuildNot(self.llbuilder, v, noname())
+ }
+ }
+
+ fn checked_binop(
+ &mut self,
+ oop: OverflowOp,
+ ty: Ty<'_>,
+ lhs: Self::Value,
+ rhs: Self::Value,
+ ) -> (Self::Value, Self::Value) {
+ use syntax::ast::IntTy::*;
+ use syntax::ast::UintTy::*;
+ use rustc::ty::{Int, Uint};
+
+ let new_sty = match ty.sty {
+ Int(Isize) => Int(self.tcx.sess.target.isize_ty),
+ Uint(Usize) => Uint(self.tcx.sess.target.usize_ty),
+ ref t @ Uint(_) | ref t @ Int(_) => t.clone(),
+ _ => panic!("tried to get overflow intrinsic for op applied to non-int type")
+ };
+
+ let name = match oop {
+ OverflowOp::Add => match new_sty {
+ Int(I8) => "llvm.sadd.with.overflow.i8",
+ Int(I16) => "llvm.sadd.with.overflow.i16",
+ Int(I32) => "llvm.sadd.with.overflow.i32",
+ Int(I64) => "llvm.sadd.with.overflow.i64",
+ Int(I128) => "llvm.sadd.with.overflow.i128",
+
+ Uint(U8) => "llvm.uadd.with.overflow.i8",
+ Uint(U16) => "llvm.uadd.with.overflow.i16",
+ Uint(U32) => "llvm.uadd.with.overflow.i32",
+ Uint(U64) => "llvm.uadd.with.overflow.i64",
+ Uint(U128) => "llvm.uadd.with.overflow.i128",
+
+ _ => unreachable!(),
+ },
+ OverflowOp::Sub => match new_sty {
+ Int(I8) => "llvm.ssub.with.overflow.i8",
+ Int(I16) => "llvm.ssub.with.overflow.i16",
+ Int(I32) => "llvm.ssub.with.overflow.i32",
+ Int(I64) => "llvm.ssub.with.overflow.i64",
+ Int(I128) => "llvm.ssub.with.overflow.i128",
+
+ Uint(U8) => "llvm.usub.with.overflow.i8",
+ Uint(U16) => "llvm.usub.with.overflow.i16",
+ Uint(U32) => "llvm.usub.with.overflow.i32",
+ Uint(U64) => "llvm.usub.with.overflow.i64",
+ Uint(U128) => "llvm.usub.with.overflow.i128",
+
+ _ => unreachable!(),
+ },
+ OverflowOp::Mul => match new_sty {
+ Int(I8) => "llvm.smul.with.overflow.i8",
+ Int(I16) => "llvm.smul.with.overflow.i16",
+ Int(I32) => "llvm.smul.with.overflow.i32",
+ Int(I64) => "llvm.smul.with.overflow.i64",
+ Int(I128) => "llvm.smul.with.overflow.i128",
+
+ Uint(U8) => "llvm.umul.with.overflow.i8",
+ Uint(U16) => "llvm.umul.with.overflow.i16",
+ Uint(U32) => "llvm.umul.with.overflow.i32",
+ Uint(U64) => "llvm.umul.with.overflow.i64",
+ Uint(U128) => "llvm.umul.with.overflow.i128",
+
+ _ => unreachable!(),
+ },
+ };
+
+ let intrinsic = self.get_intrinsic(&name);
+ let res = self.call(intrinsic, &[lhs, rhs], None);
+ (
+ self.extract_value(res, 0),
+ self.extract_value(res, 1),
+ )
+ }
+
+ fn alloca(&mut self, ty: &'ll Type, name: &str, align: Align) -> &'ll Value {
+ let mut bx = Builder::with_cx(self.cx);
+ bx.position_at_start(unsafe {
+ llvm::LLVMGetFirstBasicBlock(self.llfn())
+ });
+ bx.dynamic_alloca(ty, name, align)
+ }
+
+ fn dynamic_alloca(&mut self, ty: &'ll Type, name: &str, align: Align) -> &'ll Value {
+ self.count_insn("alloca");
+ unsafe {
+ let alloca = if name.is_empty() {
+ llvm::LLVMBuildAlloca(self.llbuilder, ty, noname())
+ } else {
+ let name = SmallCStr::new(name);
+ llvm::LLVMBuildAlloca(self.llbuilder, ty,
+ name.as_ptr())
+ };
+ llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
+ alloca
+ }
+ }
+
+ fn array_alloca(&mut self,
+ ty: &'ll Type,
+ len: &'ll Value,
+ name: &str,
+ align: Align) -> &'ll Value {
+ self.count_insn("alloca");
+ unsafe {
+ let alloca = if name.is_empty() {
+ llvm::LLVMBuildArrayAlloca(self.llbuilder, ty, len, noname())
+ } else {
+ let name = SmallCStr::new(name);
+ llvm::LLVMBuildArrayAlloca(self.llbuilder, ty, len,
+ name.as_ptr())
+ };
+ llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
+ alloca
+ }
+ }
+
+ fn load(&mut self, ptr: &'ll Value, align: Align) -> &'ll Value {
+ self.count_insn("load");
+ unsafe {
+ let load = llvm::LLVMBuildLoad(self.llbuilder, ptr, noname());
+ llvm::LLVMSetAlignment(load, align.bytes() as c_uint);
+ load
+ }
+ }
+
+ fn volatile_load(&mut self, ptr: &'ll Value) -> &'ll Value {
+ self.count_insn("load.volatile");
+ unsafe {
+ let insn = llvm::LLVMBuildLoad(self.llbuilder, ptr, noname());
+ llvm::LLVMSetVolatile(insn, llvm::True);
+ insn
+ }
+ }
+
+ fn atomic_load(
+ &mut self,
+ ptr: &'ll Value,
+ order: rustc_codegen_ssa::common::AtomicOrdering,
+ size: Size,
+ ) -> &'ll Value {
+ self.count_insn("load.atomic");
+ unsafe {
+ let load = llvm::LLVMRustBuildAtomicLoad(
+ self.llbuilder,
+ ptr,
+ noname(),
+ AtomicOrdering::from_generic(order),
+ );
+ // LLVM requires the alignment of atomic loads to be at least the size of the type.
+ llvm::LLVMSetAlignment(load, size.bytes() as c_uint);
+ load
+ }
+ }
+
+ fn load_operand(
+ &mut self,
+ place: PlaceRef<'tcx, &'ll Value>
+ ) -> OperandRef<'tcx, &'ll Value> {
+ debug!("PlaceRef::load: {:?}", place);
+
+ assert_eq!(place.llextra.is_some(), place.layout.is_unsized());
+
+ if place.layout.is_zst() {
+ return OperandRef::new_zst(self, place.layout);
+ }
+
+ fn scalar_load_metadata<'a, 'll, 'tcx>(
+ bx: &mut Builder<'a, 'll, 'tcx>,
+ load: &'ll Value,
+ scalar: &layout::Scalar
+ ) {
+ let vr = scalar.valid_range.clone();
+ match scalar.value {
+ layout::Int(..) => {
+ let range = scalar.valid_range_exclusive(bx);
+ if range.start != range.end {
+ bx.range_metadata(load, range);
+ }
+ }
+ layout::Pointer if vr.start() < vr.end() && !vr.contains(&0) => {
+ bx.nonnull_metadata(load);
+ }
+ _ => {}
+ }
+ }
+
+ let val = if let Some(llextra) = place.llextra {
+ OperandValue::Ref(place.llval, Some(llextra), place.align)
+ } else if place.layout.is_llvm_immediate() {
+ let mut const_llval = None;
+ unsafe {
+ if let Some(global) = llvm::LLVMIsAGlobalVariable(place.llval) {
+ if llvm::LLVMIsGlobalConstant(global) == llvm::True {
+ const_llval = llvm::LLVMGetInitializer(global);
+ }
+ }
+ }
+ let llval = const_llval.unwrap_or_else(|| {
+ let load = self.load(place.llval, place.align);
+ if let layout::Abi::Scalar(ref scalar) = place.layout.abi {
+ scalar_load_metadata(self, load, scalar);
+ }
+ load
+ });
+ OperandValue::Immediate(to_immediate(self, llval, place.layout))
+ } else if let layout::Abi::ScalarPair(ref a, ref b) = place.layout.abi {
+ let b_offset = a.value.size(self).align_to(b.value.align(self).abi);
+
+ let mut load = |i, scalar: &layout::Scalar, align| {
+ let llptr = self.struct_gep(place.llval, i as u64);
+ let load = self.load(llptr, align);
+ scalar_load_metadata(self, load, scalar);
+ if scalar.is_bool() {
+ self.trunc(load, self.type_i1())
+ } else {
+ load
+ }
+ };
+
+ OperandValue::Pair(
+ load(0, a, place.align),
+ load(1, b, place.align.restrict_for_offset(b_offset)),
+ )
+ } else {
+ OperandValue::Ref(place.llval, None, place.align)
+ };
+
+ OperandRef { val, layout: place.layout }
+ }
+
+ fn write_operand_repeatedly(
+ mut self,
+ cg_elem: OperandRef<'tcx, &'ll Value>,
+ count: u64,
+ dest: PlaceRef<'tcx, &'ll Value>,
+ ) -> Self {
+ let zero = self.const_usize(0);
+ let count = self.const_usize(count);
+ let start = dest.project_index(&mut self, zero).llval;
+ let end = dest.project_index(&mut self, count).llval;
+
+ let mut header_bx = self.build_sibling_block("repeat_loop_header");
+ let mut body_bx = self.build_sibling_block("repeat_loop_body");
+ let next_bx = self.build_sibling_block("repeat_loop_next");
+
+ self.br(header_bx.llbb());
+ let current = header_bx.phi(self.val_ty(start), &[start], &[self.llbb()]);
+
+ let keep_going = header_bx.icmp(IntPredicate::IntNE, current, end);
+ header_bx.cond_br(keep_going, body_bx.llbb(), next_bx.llbb());
+
+ let align = dest.align.restrict_for_offset(dest.layout.field(self.cx(), 0).size);
+ cg_elem.val.store(&mut body_bx,
+ PlaceRef::new_sized(current, cg_elem.layout, align));
+
+ let next = body_bx.inbounds_gep(current, &[self.const_usize(1)]);
+ body_bx.br(header_bx.llbb());
+ header_bx.add_incoming_to_phi(current, next, body_bx.llbb());
+
+ next_bx
+ }
+
+ fn range_metadata(&mut self, load: &'ll Value, range: Range<u128>) {
+ if self.sess().target.target.arch == "amdgpu" {
+ // amdgpu/LLVM does something weird and thinks a i64 value is
+ // split into a v2i32, halving the bitwidth LLVM expects,
+ // tripping an assertion. So, for now, just disable this
+ // optimization.
+ return;
+ }
+
+ unsafe {
+ let llty = self.cx.val_ty(load);
+ let v = [
+ self.cx.const_uint_big(llty, range.start),
+ self.cx.const_uint_big(llty, range.end)
+ ];
+
+ llvm::LLVMSetMetadata(load, llvm::MD_range as c_uint,
+ llvm::LLVMMDNodeInContext(self.cx.llcx,
+ v.as_ptr(),
+ v.len() as c_uint));
+ }
+ }
+
+ fn nonnull_metadata(&mut self, load: &'ll Value) {
+ unsafe {
+ llvm::LLVMSetMetadata(load, llvm::MD_nonnull as c_uint,
+ llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0));
+ }
+ }
+
+ fn store(&mut self, val: &'ll Value, ptr: &'ll Value, align: Align) -> &'ll Value {
+ self.store_with_flags(val, ptr, align, MemFlags::empty())
+ }
+
+ fn store_with_flags(
+ &mut self,
+ val: &'ll Value,
+ ptr: &'ll Value,
+ align: Align,
+ flags: MemFlags,
+ ) -> &'ll Value {
+ debug!("Store {:?} -> {:?} ({:?})", val, ptr, flags);
+ self.count_insn("store");
+ let ptr = self.check_store(val, ptr);
+ unsafe {
+ let store = llvm::LLVMBuildStore(self.llbuilder, val, ptr);
+ let align = if flags.contains(MemFlags::UNALIGNED) {
+ 1
+ } else {
+ align.bytes() as c_uint
+ };
+ llvm::LLVMSetAlignment(store, align);
+ if flags.contains(MemFlags::VOLATILE) {
+ llvm::LLVMSetVolatile(store, llvm::True);
+ }
+ if flags.contains(MemFlags::NONTEMPORAL) {
+ // According to LLVM [1] building a nontemporal store must
+ // *always* point to a metadata value of the integer 1.
+ //
+ // [1]: http://llvm.org/docs/LangRef.html#store-instruction
+ let one = self.cx.const_i32(1);
+ let node = llvm::LLVMMDNodeInContext(self.cx.llcx, &one, 1);
+ llvm::LLVMSetMetadata(store, llvm::MD_nontemporal as c_uint, node);
+ }
+ store
+ }
+ }
+
+ fn atomic_store(&mut self, val: &'ll Value, ptr: &'ll Value,
+ order: rustc_codegen_ssa::common::AtomicOrdering, size: Size) {
+ debug!("Store {:?} -> {:?}", val, ptr);
+ self.count_insn("store.atomic");
+ let ptr = self.check_store(val, ptr);
+ unsafe {
+ let store = llvm::LLVMRustBuildAtomicStore(
+ self.llbuilder,
+ val,
+ ptr,
+ AtomicOrdering::from_generic(order),
+ );
+ // LLVM requires the alignment of atomic stores to be at least the size of the type.
+ llvm::LLVMSetAlignment(store, size.bytes() as c_uint);
+ }
+ }
+
+ fn gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
+ self.count_insn("gep");
+ unsafe {
+ llvm::LLVMBuildGEP(self.llbuilder, ptr, indices.as_ptr(),
+ indices.len() as c_uint, noname())
+ }
+ }
+
+ fn inbounds_gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
+ self.count_insn("inboundsgep");
+ unsafe {
+ llvm::LLVMBuildInBoundsGEP(
+ self.llbuilder, ptr, indices.as_ptr(), indices.len() as c_uint, noname())
+ }
+ }
+
+ fn struct_gep(&mut self, ptr: &'ll Value, idx: u64) -> &'ll Value {
+ self.count_insn("structgep");
+ assert_eq!(idx as c_uint as u64, idx);
+ unsafe {
+ llvm::LLVMBuildStructGEP(self.llbuilder, ptr, idx as c_uint, noname())
+ }
+ }
+
+ /* Casts */
+ fn trunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("trunc");
+ unsafe {
+ llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn sext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("sext");
+ unsafe {
+ llvm::LLVMBuildSExt(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn fptoui(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("fptoui");
+ unsafe {
+ llvm::LLVMBuildFPToUI(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn fptosi(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("fptosi");
+ unsafe {
+ llvm::LLVMBuildFPToSI(self.llbuilder, val, dest_ty,noname())
+ }
+ }
+
+ fn uitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("uitofp");
+ unsafe {
+ llvm::LLVMBuildUIToFP(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn sitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("sitofp");
+ unsafe {
+ llvm::LLVMBuildSIToFP(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn fptrunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("fptrunc");
+ unsafe {
+ llvm::LLVMBuildFPTrunc(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn fpext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("fpext");
+ unsafe {
+ llvm::LLVMBuildFPExt(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn ptrtoint(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("ptrtoint");
+ unsafe {
+ llvm::LLVMBuildPtrToInt(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn inttoptr(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("inttoptr");
+ unsafe {
+ llvm::LLVMBuildIntToPtr(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ fn bitcast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("bitcast");
+ unsafe {
+ llvm::LLVMBuildBitCast(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+
+ fn intcast(&mut self, val: &'ll Value, dest_ty: &'ll Type, is_signed: bool) -> &'ll Value {
+ self.count_insn("intcast");
+ unsafe {
+ llvm::LLVMRustBuildIntCast(self.llbuilder, val, dest_ty, is_signed)
+ }
+ }
+
+ fn pointercast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("pointercast");
+ unsafe {
+ llvm::LLVMBuildPointerCast(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+ /* Comparisons */
+ fn icmp(&mut self, op: IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("icmp");
+ let op = llvm::IntPredicate::from_generic(op);
+ unsafe {
+ llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, noname())
+ }
+ }
+
+ fn fcmp(&mut self, op: RealPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("fcmp");
+ unsafe {
+ llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, noname())
+ }
+ }
+
+ /* Miscellaneous instructions */
+ fn memcpy(&mut self, dst: &'ll Value, dst_align: Align,
+ src: &'ll Value, src_align: Align,
+ size: &'ll Value, flags: MemFlags) {
+ if flags.contains(MemFlags::NONTEMPORAL) {
+ // HACK(nox): This is inefficient but there is no nontemporal memcpy.
+ let val = self.load(src, src_align);
+ let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
+ self.store_with_flags(val, ptr, dst_align, flags);
+ return;
+ }
+ let size = self.intcast(size, self.type_isize(), false);
+ let is_volatile = flags.contains(MemFlags::VOLATILE);
+ let dst = self.pointercast(dst, self.type_i8p());
+ let src = self.pointercast(src, self.type_i8p());
+ unsafe {
+ llvm::LLVMRustBuildMemCpy(self.llbuilder, dst, dst_align.bytes() as c_uint,
+ src, src_align.bytes() as c_uint, size, is_volatile);
+ }
+ }
+
+ fn memmove(&mut self, dst: &'ll Value, dst_align: Align,
+ src: &'ll Value, src_align: Align,
+ size: &'ll Value, flags: MemFlags) {
+ if flags.contains(MemFlags::NONTEMPORAL) {
+ // HACK(nox): This is inefficient but there is no nontemporal memmove.
+ let val = self.load(src, src_align);
+ let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
+ self.store_with_flags(val, ptr, dst_align, flags);
+ return;
+ }
+ let size = self.intcast(size, self.type_isize(), false);
+ let is_volatile = flags.contains(MemFlags::VOLATILE);
+ let dst = self.pointercast(dst, self.type_i8p());
+ let src = self.pointercast(src, self.type_i8p());
+ unsafe {
+ llvm::LLVMRustBuildMemMove(self.llbuilder, dst, dst_align.bytes() as c_uint,
+ src, src_align.bytes() as c_uint, size, is_volatile);
+ }
+ }
+
+ fn memset(
+ &mut self,
+ ptr: &'ll Value,
+ fill_byte: &'ll Value,
+ size: &'ll Value,
+ align: Align,
+ flags: MemFlags,
+ ) {
+ let ptr_width = &self.sess().target.target.target_pointer_width;
+ let intrinsic_key = format!("llvm.memset.p0i8.i{}", ptr_width);
+ let llintrinsicfn = self.get_intrinsic(&intrinsic_key);
+ let ptr = self.pointercast(ptr, self.type_i8p());
+ let align = self.const_u32(align.bytes() as u32);
+ let volatile = self.const_bool(flags.contains(MemFlags::VOLATILE));
+ self.call(llintrinsicfn, &[ptr, fill_byte, size, align, volatile], None);
+ }
+
+ fn select(
+ &mut self, cond: &'ll Value,
+ then_val: &'ll Value,
+ else_val: &'ll Value,
+ ) -> &'ll Value {
+ self.count_insn("select");
+ unsafe {
+ llvm::LLVMBuildSelect(self.llbuilder, cond, then_val, else_val, noname())
+ }
+ }
+
+ #[allow(dead_code)]
+ fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
+ self.count_insn("vaarg");
+ unsafe {
+ llvm::LLVMBuildVAArg(self.llbuilder, list, ty, noname())
+ }
+ }
+
+ fn extract_element(&mut self, vec: &'ll Value, idx: &'ll Value) -> &'ll Value {
+ self.count_insn("extractelement");
+ unsafe {
+ llvm::LLVMBuildExtractElement(self.llbuilder, vec, idx, noname())
+ }
+ }
+
+ fn vector_splat(&mut self, num_elts: usize, elt: &'ll Value) -> &'ll Value {
+ unsafe {
+ let elt_ty = self.cx.val_ty(elt);
+ let undef = llvm::LLVMGetUndef(self.type_vector(elt_ty, num_elts as u64));
+ let vec = self.insert_element(undef, elt, self.cx.const_i32(0));
+ let vec_i32_ty = self.type_vector(self.type_i32(), num_elts as u64);
+ self.shuffle_vector(vec, undef, self.const_null(vec_i32_ty))
+ }
+ }
+
+ fn extract_value(&mut self, agg_val: &'ll Value, idx: u64) -> &'ll Value {
+ self.count_insn("extractvalue");
+ assert_eq!(idx as c_uint as u64, idx);
+ unsafe {
+ llvm::LLVMBuildExtractValue(self.llbuilder, agg_val, idx as c_uint, noname())
+ }
+ }
+
+ fn insert_value(&mut self, agg_val: &'ll Value, elt: &'ll Value,
+ idx: u64) -> &'ll Value {
+ self.count_insn("insertvalue");
+ assert_eq!(idx as c_uint as u64, idx);
+ unsafe {
+ llvm::LLVMBuildInsertValue(self.llbuilder, agg_val, elt, idx as c_uint,
+ noname())
+ }
+ }
+
+ fn landing_pad(&mut self, ty: &'ll Type, pers_fn: &'ll Value,
+ num_clauses: usize) -> &'ll Value {
+ self.count_insn("landingpad");
+ unsafe {
+ llvm::LLVMBuildLandingPad(self.llbuilder, ty, pers_fn,
+ num_clauses as c_uint, noname())
+ }
+ }
+
+ fn set_cleanup(&mut self, landing_pad: &'ll Value) {
+ self.count_insn("setcleanup");
+ unsafe {
+ llvm::LLVMSetCleanup(landing_pad, llvm::True);
+ }
+ }
+
+ fn resume(&mut self, exn: &'ll Value) -> &'ll Value {
+ self.count_insn("resume");
+ unsafe {
+ llvm::LLVMBuildResume(self.llbuilder, exn)
+ }
+ }
+
+ fn cleanup_pad(&mut self,
+ parent: Option<&'ll Value>,
+ args: &[&'ll Value]) -> Funclet<'ll> {
+ self.count_insn("cleanuppad");
+ let name = const_cstr!("cleanuppad");
+ let ret = unsafe {
+ llvm::LLVMRustBuildCleanupPad(self.llbuilder,
+ parent,
+ args.len() as c_uint,
+ args.as_ptr(),
+ name.as_ptr())
+ };
+ Funclet::new(ret.expect("LLVM does not have support for cleanuppad"))
+ }
+
+ fn cleanup_ret(
+ &mut self, funclet: &Funclet<'ll>,
+ unwind: Option<&'ll BasicBlock>,
+ ) -> &'ll Value {
+ self.count_insn("cleanupret");
+ let ret = unsafe {
+ llvm::LLVMRustBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind)
+ };
+ ret.expect("LLVM does not have support for cleanupret")
+ }
+
+ fn catch_pad(&mut self,
+ parent: &'ll Value,
+ args: &[&'ll Value]) -> Funclet<'ll> {
+ self.count_insn("catchpad");
+ let name = const_cstr!("catchpad");
+ let ret = unsafe {
+ llvm::LLVMRustBuildCatchPad(self.llbuilder, parent,
+ args.len() as c_uint, args.as_ptr(),
+ name.as_ptr())
+ };
+ Funclet::new(ret.expect("LLVM does not have support for catchpad"))
+ }
+
+ fn catch_switch(
+ &mut self,
+ parent: Option<&'ll Value>,
+ unwind: Option<&'ll BasicBlock>,
+ num_handlers: usize,
+ ) -> &'ll Value {
+ self.count_insn("catchswitch");
+ let name = const_cstr!("catchswitch");
+ let ret = unsafe {
+ llvm::LLVMRustBuildCatchSwitch(self.llbuilder, parent, unwind,
+ num_handlers as c_uint,
+ name.as_ptr())
+ };
+ ret.expect("LLVM does not have support for catchswitch")
+ }
+
+ fn add_handler(&mut self, catch_switch: &'ll Value, handler: &'ll BasicBlock) {
+ unsafe {
+ llvm::LLVMRustAddHandler(catch_switch, handler);
+ }
+ }
+
+ fn set_personality_fn(&mut self, personality: &'ll Value) {
+ unsafe {
+ llvm::LLVMSetPersonalityFn(self.llfn(), personality);
+ }
+ }
+
+ // Atomic Operations
+ fn atomic_cmpxchg(
+ &mut self,
+ dst: &'ll Value,
+ cmp: &'ll Value,
+ src: &'ll Value,
+ order: rustc_codegen_ssa::common::AtomicOrdering,
+ failure_order: rustc_codegen_ssa::common::AtomicOrdering,
+ weak: bool,
+ ) -> &'ll Value {
+ let weak = if weak { llvm::True } else { llvm::False };
+ unsafe {
+ llvm::LLVMRustBuildAtomicCmpXchg(
+ self.llbuilder,
+ dst,
+ cmp,
+ src,
+ AtomicOrdering::from_generic(order),
+ AtomicOrdering::from_generic(failure_order),
+ weak
+ )
+ }
+ }
+ fn atomic_rmw(
+ &mut self,
+ op: rustc_codegen_ssa::common::AtomicRmwBinOp,
+ dst: &'ll Value,
+ src: &'ll Value,
+ order: rustc_codegen_ssa::common::AtomicOrdering,
+ ) -> &'ll Value {
+ unsafe {
+ llvm::LLVMBuildAtomicRMW(
+ self.llbuilder,
+ AtomicRmwBinOp::from_generic(op),
+ dst,
+ src,
+ AtomicOrdering::from_generic(order),
+ False)
+ }
+ }
+
+ fn atomic_fence(
+ &mut self,
+ order: rustc_codegen_ssa::common::AtomicOrdering,
+ scope: rustc_codegen_ssa::common::SynchronizationScope
+ ) {
+ unsafe {
+ llvm::LLVMRustBuildAtomicFence(
+ self.llbuilder,
+ AtomicOrdering::from_generic(order),
+ SynchronizationScope::from_generic(scope)
+ );
+ }
+ }
+
+ fn set_invariant_load(&mut self, load: &'ll Value) {
+ unsafe {
+ llvm::LLVMSetMetadata(load, llvm::MD_invariant_load as c_uint,
+ llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0));
+ }
+ }
+
+ fn lifetime_start(&mut self, ptr: &'ll Value, size: Size) {
+ self.call_lifetime_intrinsic("llvm.lifetime.start", ptr, size);
+ }
+
+ fn lifetime_end(&mut self, ptr: &'ll Value, size: Size) {
+ self.call_lifetime_intrinsic("llvm.lifetime.end", ptr, size);
+ }
+
+ fn call(
+ &mut self,
+ llfn: &'ll Value,
+ args: &[&'ll Value],
+ funclet: Option<&Funclet<'ll>>,
+ ) -> &'ll Value {
+ self.count_insn("call");
+
+ debug!("Call {:?} with args ({:?})",
+ llfn,
+ args);
+
+ let args = self.check_call("call", llfn, args);
+ let bundle = funclet.map(|funclet| funclet.bundle());
+ let bundle = bundle.as_ref().map(|b| &*b.raw);
+
+ unsafe {
+ llvm::LLVMRustBuildCall(
+ self.llbuilder,
+ llfn,
+ args.as_ptr() as *const &llvm::Value,
+ args.len() as c_uint,
+ bundle, noname()
+ )
+ }
+ }
+
+ fn zext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
+ self.count_insn("zext");
+ unsafe {
+ llvm::LLVMBuildZExt(self.llbuilder, val, dest_ty, noname())
+ }
+ }
+
+
+ fn cx(&self) -> &CodegenCx<'ll, 'tcx> {
+ self.cx
+ }
+
+ unsafe fn delete_basic_block(&mut self, bb: &'ll BasicBlock) {
+ llvm::LLVMDeleteBasicBlock(bb);
+ }
+
+ fn do_not_inline(&mut self, llret: &'ll Value) {
+ llvm::Attribute::NoInline.apply_callsite(llvm::AttributePlace::Function, llret);
+ }
+}
+
+impl StaticBuilderMethods<'tcx> for Builder<'a, 'll, 'tcx> {
+fn get_static(&mut self, def_id: DefId) -> &'ll Value {
+ // Forward to the `get_static` method of `CodegenCx`
+ self.cx().get_static(def_id)
+ }
+
+ fn static_panic_msg(
+ &mut self,
+ msg: Option<LocalInternedString>,
+ filename: LocalInternedString,
+ line: Self::Value,
+ col: Self::Value,
+ kind: &str,
+ ) -> Self::Value {
+ let align = self.tcx.data_layout.aggregate_align.abi
+ .max(self.tcx.data_layout.i32_align.abi)
+ .max(self.tcx.data_layout.pointer_align.abi);
+
+ let filename = self.const_str_slice(filename);
+
+ let with_msg_components;
+ let without_msg_components;
+
+ let components = if let Some(msg) = msg {
+ let msg = self.const_str_slice(msg);
+ with_msg_components = [msg, filename, line, col];
+ &with_msg_components as &[_]
+ } else {
+ without_msg_components = [filename, line, col];
+ &without_msg_components as &[_]
+ };
+
+ let struct_ = self.const_struct(&components, false);
+ self.static_addr_of(struct_, align, Some(kind))
+ }
+}
+
+impl Builder<'a, 'll, 'tcx> {
+ pub fn llfn(&self) -> &'ll Value {
+ unsafe {
+ llvm::LLVMGetBasicBlockParent(self.llbb())
+ }
+ }
+
+ fn count_insn(&self, category: &str) {
+ if self.sess().codegen_stats() {
+ self.stats.borrow_mut().n_llvm_insns += 1;
+ }
+ if self.sess().count_llvm_insns() {
+ *self.stats
+ .borrow_mut()
+ .llvm_insns
+ .entry(category.to_string())
+ .or_insert(0) += 1;
+ }
+ }
+
+ fn position_at_start(&mut self, llbb: &'ll BasicBlock) {
+ unsafe {
+ llvm::LLVMRustPositionBuilderAtStart(self.llbuilder, llbb);
+ }
+ }
+
+ pub fn minnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("minnum");
+ unsafe { llvm::LLVMRustBuildMinNum(self.llbuilder, lhs, rhs) }
+ }
+
+ pub fn maxnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
+ self.count_insn("maxnum");
+ unsafe { llvm::LLVMRustBuildMaxNum(self.llbuilder, lhs, rhs) }
+ }
+
+ pub fn insert_element(
+ &mut self, vec: &'ll Value,
+ elt: &'ll Value,
+ idx: &'ll Value,
+ ) -> &'ll Value {
+ self.count_insn("insertelement");
+ unsafe {
+ llvm::LLVMBuildInsertElement(self.llbuilder, vec, elt, idx, noname())
+ }
+ }
+
+ pub fn shuffle_vector(
+ &mut self,
+ v1: &'ll Value,
+ v2: &'ll Value,
+ mask: &'ll Value,
+ ) -> &'ll Value {
+ self.count_insn("shufflevector");
+ unsafe {
+ llvm::LLVMBuildShuffleVector(self.llbuilder, v1, v2, mask, noname())
+ }
+ }
+
+ pub fn vector_reduce_fadd_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fadd_fast");
+ unsafe {
+ // FIXME: add a non-fast math version once
+ // https://bugs.llvm.org/show_bug.cgi?id=36732
+ // is fixed.
+ let instr = llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src);
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+ pub fn vector_reduce_fmul_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fmul_fast");
+ unsafe {
+ // FIXME: add a non-fast math version once
+ // https://bugs.llvm.org/show_bug.cgi?id=36732
+ // is fixed.
+ let instr = llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src);
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+ pub fn vector_reduce_add(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.add");
+ unsafe { llvm::LLVMRustBuildVectorReduceAdd(self.llbuilder, src) }
+ }
+ pub fn vector_reduce_mul(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.mul");
+ unsafe { llvm::LLVMRustBuildVectorReduceMul(self.llbuilder, src) }
+ }
+ pub fn vector_reduce_and(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.and");
+ unsafe { llvm::LLVMRustBuildVectorReduceAnd(self.llbuilder, src) }
+ }
+ pub fn vector_reduce_or(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.or");
+ unsafe { llvm::LLVMRustBuildVectorReduceOr(self.llbuilder, src) }
+ }
+ pub fn vector_reduce_xor(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.xor");
+ unsafe { llvm::LLVMRustBuildVectorReduceXor(self.llbuilder, src) }
+ }
+ pub fn vector_reduce_fmin(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fmin");
+ unsafe { llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ false) }
+ }
+ pub fn vector_reduce_fmax(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fmax");
+ unsafe { llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ false) }
+ }
+ pub fn vector_reduce_fmin_fast(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fmin_fast");
+ unsafe {
+ let instr = llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ true);
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+ pub fn vector_reduce_fmax_fast(&mut self, src: &'ll Value) -> &'ll Value {
+ self.count_insn("vector.reduce.fmax_fast");
+ unsafe {
+ let instr = llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ true);
+ llvm::LLVMRustSetHasUnsafeAlgebra(instr);
+ instr
+ }
+ }
+ pub fn vector_reduce_min(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
+ self.count_insn("vector.reduce.min");
+ unsafe { llvm::LLVMRustBuildVectorReduceMin(self.llbuilder, src, is_signed) }
+ }
+ pub fn vector_reduce_max(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
+ self.count_insn("vector.reduce.max");
+ unsafe { llvm::LLVMRustBuildVectorReduceMax(self.llbuilder, src, is_signed) }
+ }
+
+ pub fn add_clause(&mut self, landing_pad: &'ll Value, clause: &'ll Value) {
+ unsafe {
+ llvm::LLVMAddClause(landing_pad, clause);
+ }
+ }
+
+ pub fn catch_ret(&mut self, funclet: &Funclet<'ll>, unwind: &'ll BasicBlock) -> &'ll Value {
+ self.count_insn("catchret");
+ let ret = unsafe {
+ llvm::LLVMRustBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind)
+ };
+ ret.expect("LLVM does not have support for catchret")
+ }
+
+ fn check_store<'b>(&mut self,
+ val: &'ll Value,
+ ptr: &'ll Value) -> &'ll Value {
+ let dest_ptr_ty = self.cx.val_ty(ptr);
+ let stored_ty = self.cx.val_ty(val);
+ let stored_ptr_ty = self.cx.type_ptr_to(stored_ty);
+
+ assert_eq!(self.cx.type_kind(dest_ptr_ty), TypeKind::Pointer);
+
+ if dest_ptr_ty == stored_ptr_ty {
+ ptr
+ } else {
+ debug!("Type mismatch in store. \
+ Expected {:?}, got {:?}; inserting bitcast",
+ dest_ptr_ty, stored_ptr_ty);
+ self.bitcast(ptr, stored_ptr_ty)
+ }
+ }
+
+ fn check_call<'b>(&mut self,
+ typ: &str,
+ llfn: &'ll Value,
+ args: &'b [&'ll Value]) -> Cow<'b, [&'ll Value]> {
+ let mut fn_ty = self.cx.val_ty(llfn);
+ // Strip off pointers
+ while self.cx.type_kind(fn_ty) == TypeKind::Pointer {
+ fn_ty = self.cx.element_type(fn_ty);
+ }
+
+ assert!(self.cx.type_kind(fn_ty) == TypeKind::Function,
+ "builder::{} not passed a function, but {:?}", typ, fn_ty);
+
+ let param_tys = self.cx.func_params_types(fn_ty);
+
+ let all_args_match = param_tys.iter()
+ .zip(args.iter().map(|&v| self.val_ty(v)))
+ .all(|(expected_ty, actual_ty)| *expected_ty == actual_ty);
+
+ if all_args_match {
+ return Cow::Borrowed(args);
+ }
+
+ let casted_args: Vec<_> = param_tys.into_iter()
+ .zip(args.iter())
+ .enumerate()
+ .map(|(i, (expected_ty, &actual_val))| {
+ let actual_ty = self.val_ty(actual_val);
+ if expected_ty != actual_ty {
+ debug!("Type mismatch in function call of {:?}. \
+ Expected {:?} for param {}, got {:?}; injecting bitcast",
+ llfn, expected_ty, i, actual_ty);
+ self.bitcast(actual_val, expected_ty)
+ } else {
+ actual_val
+ }
+ })
+ .collect();
+
+ Cow::Owned(casted_args)
+ }
+
+ pub fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
+ self.count_insn("vaarg");
+ unsafe {
+ llvm::LLVMBuildVAArg(self.llbuilder, list, ty, noname())
+ }
+ }
+
+ fn call_lifetime_intrinsic(&mut self, intrinsic: &str, ptr: &'ll Value, size: Size) {
+ if self.cx.sess().opts.optimize == config::OptLevel::No {
+ return;
+ }
+
+ let size = size.bytes();
+ if size == 0 {
+ return;
+ }
+
+ let lifetime_intrinsic = self.cx.get_intrinsic(intrinsic);
+
+ let ptr = self.pointercast(ptr, self.cx.type_i8p());
+ self.call(lifetime_intrinsic, &[self.cx.const_u64(size), ptr], None);
+ }
+
+ fn phi(&mut self, ty: &'ll Type, vals: &[&'ll Value], bbs: &[&'ll BasicBlock]) -> &'ll Value {
+ self.count_insn("addincoming");
+ assert_eq!(vals.len(), bbs.len());
+ let phi = unsafe {
+ llvm::LLVMBuildPhi(self.llbuilder, ty, noname())
+ };
+ unsafe {
+ llvm::LLVMAddIncoming(phi, vals.as_ptr(),
+ bbs.as_ptr(),
+ vals.len() as c_uint);
+ phi
+ }
+ }
+
+ fn add_incoming_to_phi(&mut self, phi: &'ll Value, val: &'ll Value, bb: &'ll BasicBlock) {
+ self.count_insn("addincoming");
+ unsafe {
+ llvm::LLVMAddIncoming(phi, &val, &bb, 1 as c_uint);
+ }
+ }
+}
