1 use crate::common::Funclet;
2 use crate::context::CodegenCx;
3 use crate::llvm::{self, BasicBlock, False};
4 use crate::llvm::{AtomicOrdering, AtomicRmwBinOp, SynchronizationScope};
5 use crate::type_::Type;
6 use crate::type_of::LayoutLlvmExt;
7 use crate::value::Value;
8 use libc::{c_char, c_uint};
10 use rustc::session::config::{self, Sanitizer};
11 use rustc::ty::layout::{self, Align, Size, TyLayout};
12 use rustc::ty::{self, Ty, TyCtxt};
13 use rustc_codegen_ssa::base::to_immediate;
14 use rustc_codegen_ssa::common::{IntPredicate, RealPredicate, TypeKind};
15 use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
16 use rustc_codegen_ssa::mir::place::PlaceRef;
17 use rustc_codegen_ssa::traits::*;
18 use rustc_codegen_ssa::MemFlags;
19 use rustc_data_structures::const_cstr;
20 use rustc_data_structures::small_c_str::SmallCStr;
21 use rustc_hir::def_id::DefId;
22 use rustc_target::spec::{HasTargetSpec, Target};
25 use std::iter::TrustedLen;
26 use std::ops::{Deref, Range};
29 // All Builders must have an llfn associated with them
31 pub struct Builder<'a, 'll, 'tcx> {
32 pub llbuilder: &'ll mut llvm::Builder<'ll>,
33 pub cx: &'a CodegenCx<'ll, 'tcx>,
36 impl Drop for Builder<'a, 'll, 'tcx> {
39 llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _));
44 // FIXME(eddyb) use a checked constructor when they become `const fn`.
45 const EMPTY_C_STR: &CStr = unsafe { CStr::from_bytes_with_nul_unchecked(b"\0") };
47 /// Empty string, to be used where LLVM expects an instruction name, indicating
48 /// that the instruction is to be left unnamed (i.e. numbered, in textual IR).
49 // FIXME(eddyb) pass `&CStr` directly to FFI once it's a thin pointer.
50 const UNNAMED: *const c_char = EMPTY_C_STR.as_ptr();
52 impl BackendTypes for Builder<'_, 'll, 'tcx> {
53 type Value = <CodegenCx<'ll, 'tcx> as BackendTypes>::Value;
54 type Function = <CodegenCx<'ll, 'tcx> as BackendTypes>::Function;
55 type BasicBlock = <CodegenCx<'ll, 'tcx> as BackendTypes>::BasicBlock;
56 type Type = <CodegenCx<'ll, 'tcx> as BackendTypes>::Type;
57 type Funclet = <CodegenCx<'ll, 'tcx> as BackendTypes>::Funclet;
59 type DIScope = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIScope;
60 type DIVariable = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIVariable;
63 impl ty::layout::HasDataLayout for Builder<'_, '_, '_> {
64 fn data_layout(&self) -> &ty::layout::TargetDataLayout {
69 impl ty::layout::HasTyCtxt<'tcx> for Builder<'_, '_, 'tcx> {
70 fn tcx(&self) -> TyCtxt<'tcx> {
75 impl ty::layout::HasParamEnv<'tcx> for Builder<'_, '_, 'tcx> {
76 fn param_env(&self) -> ty::ParamEnv<'tcx> {
81 impl HasTargetSpec for Builder<'_, '_, 'tcx> {
82 fn target_spec(&self) -> &Target {
83 &self.cx.target_spec()
87 impl ty::layout::LayoutOf for Builder<'_, '_, 'tcx> {
89 type TyLayout = TyLayout<'tcx>;
91 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyLayout {
96 impl Deref for Builder<'_, 'll, 'tcx> {
97 type Target = CodegenCx<'ll, 'tcx>;
99 fn deref(&self) -> &Self::Target {
104 impl HasCodegen<'tcx> for Builder<'_, 'll, 'tcx> {
105 type CodegenCx = CodegenCx<'ll, 'tcx>;
108 macro_rules! builder_methods_for_value_instructions {
109 ($($name:ident($($arg:ident),*) => $llvm_capi:ident),+ $(,)?) => {
110 $(fn $name(&mut self, $($arg: &'ll Value),*) -> &'ll Value {
112 llvm::$llvm_capi(self.llbuilder, $($arg,)* UNNAMED)
118 impl BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
119 fn new_block<'b>(cx: &'a CodegenCx<'ll, 'tcx>, llfn: &'ll Value, name: &'b str) -> Self {
120 let mut bx = Builder::with_cx(cx);
122 let name = SmallCStr::new(name);
123 llvm::LLVMAppendBasicBlockInContext(cx.llcx, llfn, name.as_ptr())
125 bx.position_at_end(llbb);
129 fn with_cx(cx: &'a CodegenCx<'ll, 'tcx>) -> Self {
130 // Create a fresh builder from the crate context.
131 let llbuilder = unsafe { llvm::LLVMCreateBuilderInContext(cx.llcx) };
132 Builder { llbuilder, cx }
135 fn build_sibling_block(&self, name: &str) -> Self {
136 Builder::new_block(self.cx, self.llfn(), name)
139 fn llbb(&self) -> &'ll BasicBlock {
140 unsafe { llvm::LLVMGetInsertBlock(self.llbuilder) }
143 fn position_at_end(&mut self, llbb: &'ll BasicBlock) {
145 llvm::LLVMPositionBuilderAtEnd(self.llbuilder, llbb);
149 fn ret_void(&mut self) {
151 llvm::LLVMBuildRetVoid(self.llbuilder);
155 fn ret(&mut self, v: &'ll Value) {
157 llvm::LLVMBuildRet(self.llbuilder, v);
161 fn br(&mut self, dest: &'ll BasicBlock) {
163 llvm::LLVMBuildBr(self.llbuilder, dest);
170 then_llbb: &'ll BasicBlock,
171 else_llbb: &'ll BasicBlock,
174 llvm::LLVMBuildCondBr(self.llbuilder, cond, then_llbb, else_llbb);
181 else_llbb: &'ll BasicBlock,
182 cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)> + TrustedLen,
185 unsafe { llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, cases.len() as c_uint) };
186 for (on_val, dest) in cases {
187 let on_val = self.const_uint_big(self.val_ty(v), on_val);
188 unsafe { llvm::LLVMAddCase(switch, on_val, dest) }
196 then: &'ll BasicBlock,
197 catch: &'ll BasicBlock,
198 funclet: Option<&Funclet<'ll>>,
200 debug!("invoke {:?} with args ({:?})", llfn, args);
202 let args = self.check_call("invoke", llfn, args);
203 let bundle = funclet.map(|funclet| funclet.bundle());
204 let bundle = bundle.as_ref().map(|b| &*b.raw);
207 llvm::LLVMRustBuildInvoke(
211 args.len() as c_uint,
220 fn unreachable(&mut self) {
222 llvm::LLVMBuildUnreachable(self.llbuilder);
226 builder_methods_for_value_instructions! {
227 add(a, b) => LLVMBuildAdd,
228 fadd(a, b) => LLVMBuildFAdd,
229 sub(a, b) => LLVMBuildSub,
230 fsub(a, b) => LLVMBuildFSub,
231 mul(a, b) => LLVMBuildMul,
232 fmul(a, b) => LLVMBuildFMul,
233 udiv(a, b) => LLVMBuildUDiv,
234 exactudiv(a, b) => LLVMBuildExactUDiv,
235 sdiv(a, b) => LLVMBuildSDiv,
236 exactsdiv(a, b) => LLVMBuildExactSDiv,
237 fdiv(a, b) => LLVMBuildFDiv,
238 urem(a, b) => LLVMBuildURem,
239 srem(a, b) => LLVMBuildSRem,
240 frem(a, b) => LLVMBuildFRem,
241 shl(a, b) => LLVMBuildShl,
242 lshr(a, b) => LLVMBuildLShr,
243 ashr(a, b) => LLVMBuildAShr,
244 and(a, b) => LLVMBuildAnd,
245 or(a, b) => LLVMBuildOr,
246 xor(a, b) => LLVMBuildXor,
247 neg(x) => LLVMBuildNeg,
248 fneg(x) => LLVMBuildFNeg,
249 not(x) => LLVMBuildNot,
250 unchecked_sadd(x, y) => LLVMBuildNSWAdd,
251 unchecked_uadd(x, y) => LLVMBuildNUWAdd,
252 unchecked_ssub(x, y) => LLVMBuildNSWSub,
253 unchecked_usub(x, y) => LLVMBuildNUWSub,
254 unchecked_smul(x, y) => LLVMBuildNSWMul,
255 unchecked_umul(x, y) => LLVMBuildNUWMul,
258 fn fadd_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
260 let instr = llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, UNNAMED);
261 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
266 fn fsub_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
268 let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, UNNAMED);
269 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
274 fn fmul_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
276 let instr = llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, UNNAMED);
277 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
282 fn fdiv_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
284 let instr = llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, UNNAMED);
285 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
290 fn frem_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
292 let instr = llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, UNNAMED);
293 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
304 ) -> (Self::Value, Self::Value) {
305 use rustc::ty::{Int, Uint};
306 use syntax::ast::IntTy::*;
307 use syntax::ast::UintTy::*;
309 let new_kind = match ty.kind {
310 Int(t @ Isize) => Int(t.normalize(self.tcx.sess.target.ptr_width)),
311 Uint(t @ Usize) => Uint(t.normalize(self.tcx.sess.target.ptr_width)),
312 ref t @ Uint(_) | ref t @ Int(_) => t.clone(),
313 _ => panic!("tried to get overflow intrinsic for op applied to non-int type"),
316 let name = match oop {
317 OverflowOp::Add => match new_kind {
318 Int(I8) => "llvm.sadd.with.overflow.i8",
319 Int(I16) => "llvm.sadd.with.overflow.i16",
320 Int(I32) => "llvm.sadd.with.overflow.i32",
321 Int(I64) => "llvm.sadd.with.overflow.i64",
322 Int(I128) => "llvm.sadd.with.overflow.i128",
324 Uint(U8) => "llvm.uadd.with.overflow.i8",
325 Uint(U16) => "llvm.uadd.with.overflow.i16",
326 Uint(U32) => "llvm.uadd.with.overflow.i32",
327 Uint(U64) => "llvm.uadd.with.overflow.i64",
328 Uint(U128) => "llvm.uadd.with.overflow.i128",
332 OverflowOp::Sub => match new_kind {
333 Int(I8) => "llvm.ssub.with.overflow.i8",
334 Int(I16) => "llvm.ssub.with.overflow.i16",
335 Int(I32) => "llvm.ssub.with.overflow.i32",
336 Int(I64) => "llvm.ssub.with.overflow.i64",
337 Int(I128) => "llvm.ssub.with.overflow.i128",
339 Uint(U8) => "llvm.usub.with.overflow.i8",
340 Uint(U16) => "llvm.usub.with.overflow.i16",
341 Uint(U32) => "llvm.usub.with.overflow.i32",
342 Uint(U64) => "llvm.usub.with.overflow.i64",
343 Uint(U128) => "llvm.usub.with.overflow.i128",
347 OverflowOp::Mul => match new_kind {
348 Int(I8) => "llvm.smul.with.overflow.i8",
349 Int(I16) => "llvm.smul.with.overflow.i16",
350 Int(I32) => "llvm.smul.with.overflow.i32",
351 Int(I64) => "llvm.smul.with.overflow.i64",
352 Int(I128) => "llvm.smul.with.overflow.i128",
354 Uint(U8) => "llvm.umul.with.overflow.i8",
355 Uint(U16) => "llvm.umul.with.overflow.i16",
356 Uint(U32) => "llvm.umul.with.overflow.i32",
357 Uint(U64) => "llvm.umul.with.overflow.i64",
358 Uint(U128) => "llvm.umul.with.overflow.i128",
364 let intrinsic = self.get_intrinsic(&name);
365 let res = self.call(intrinsic, &[lhs, rhs], None);
366 (self.extract_value(res, 0), self.extract_value(res, 1))
369 fn alloca(&mut self, ty: &'ll Type, align: Align) -> &'ll Value {
370 let mut bx = Builder::with_cx(self.cx);
371 bx.position_at_start(unsafe { llvm::LLVMGetFirstBasicBlock(self.llfn()) });
372 bx.dynamic_alloca(ty, align)
375 fn dynamic_alloca(&mut self, ty: &'ll Type, align: Align) -> &'ll Value {
377 let alloca = llvm::LLVMBuildAlloca(self.llbuilder, ty, UNNAMED);
378 llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
383 fn array_alloca(&mut self, ty: &'ll Type, len: &'ll Value, align: Align) -> &'ll Value {
385 let alloca = llvm::LLVMBuildArrayAlloca(self.llbuilder, ty, len, UNNAMED);
386 llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
391 fn load(&mut self, ptr: &'ll Value, align: Align) -> &'ll Value {
393 let load = llvm::LLVMBuildLoad(self.llbuilder, ptr, UNNAMED);
394 llvm::LLVMSetAlignment(load, align.bytes() as c_uint);
399 fn volatile_load(&mut self, ptr: &'ll Value) -> &'ll Value {
401 let load = llvm::LLVMBuildLoad(self.llbuilder, ptr, UNNAMED);
402 llvm::LLVMSetVolatile(load, llvm::True);
410 order: rustc_codegen_ssa::common::AtomicOrdering,
414 let load = llvm::LLVMRustBuildAtomicLoad(
418 AtomicOrdering::from_generic(order),
420 // LLVM requires the alignment of atomic loads to be at least the size of the type.
421 llvm::LLVMSetAlignment(load, size.bytes() as c_uint);
426 fn load_operand(&mut self, place: PlaceRef<'tcx, &'ll Value>) -> OperandRef<'tcx, &'ll Value> {
427 debug!("PlaceRef::load: {:?}", place);
429 assert_eq!(place.llextra.is_some(), place.layout.is_unsized());
431 if place.layout.is_zst() {
432 return OperandRef::new_zst(self, place.layout);
435 fn scalar_load_metadata<'a, 'll, 'tcx>(
436 bx: &mut Builder<'a, 'll, 'tcx>,
438 scalar: &layout::Scalar,
440 let vr = scalar.valid_range.clone();
443 let range = scalar.valid_range_exclusive(bx);
444 if range.start != range.end {
445 bx.range_metadata(load, range);
448 layout::Pointer if vr.start() < vr.end() && !vr.contains(&0) => {
449 bx.nonnull_metadata(load);
455 let val = if let Some(llextra) = place.llextra {
456 OperandValue::Ref(place.llval, Some(llextra), place.align)
457 } else if place.layout.is_llvm_immediate() {
458 let mut const_llval = None;
460 if let Some(global) = llvm::LLVMIsAGlobalVariable(place.llval) {
461 if llvm::LLVMIsGlobalConstant(global) == llvm::True {
462 const_llval = llvm::LLVMGetInitializer(global);
466 let llval = const_llval.unwrap_or_else(|| {
467 let load = self.load(place.llval, place.align);
468 if let layout::Abi::Scalar(ref scalar) = place.layout.abi {
469 scalar_load_metadata(self, load, scalar);
473 OperandValue::Immediate(to_immediate(self, llval, place.layout))
474 } else if let layout::Abi::ScalarPair(ref a, ref b) = place.layout.abi {
475 let b_offset = a.value.size(self).align_to(b.value.align(self).abi);
477 let mut load = |i, scalar: &layout::Scalar, align| {
478 let llptr = self.struct_gep(place.llval, i as u64);
479 let load = self.load(llptr, align);
480 scalar_load_metadata(self, load, scalar);
481 if scalar.is_bool() { self.trunc(load, self.type_i1()) } else { load }
485 load(0, a, place.align),
486 load(1, b, place.align.restrict_for_offset(b_offset)),
489 OperandValue::Ref(place.llval, None, place.align)
492 OperandRef { val, layout: place.layout }
495 fn write_operand_repeatedly(
497 cg_elem: OperandRef<'tcx, &'ll Value>,
499 dest: PlaceRef<'tcx, &'ll Value>,
501 let zero = self.const_usize(0);
502 let count = self.const_usize(count);
503 let start = dest.project_index(&mut self, zero).llval;
504 let end = dest.project_index(&mut self, count).llval;
506 let mut header_bx = self.build_sibling_block("repeat_loop_header");
507 let mut body_bx = self.build_sibling_block("repeat_loop_body");
508 let next_bx = self.build_sibling_block("repeat_loop_next");
510 self.br(header_bx.llbb());
511 let current = header_bx.phi(self.val_ty(start), &[start], &[self.llbb()]);
513 let keep_going = header_bx.icmp(IntPredicate::IntNE, current, end);
514 header_bx.cond_br(keep_going, body_bx.llbb(), next_bx.llbb());
516 let align = dest.align.restrict_for_offset(dest.layout.field(self.cx(), 0).size);
519 .store(&mut body_bx, PlaceRef::new_sized_aligned(current, cg_elem.layout, align));
521 let next = body_bx.inbounds_gep(current, &[self.const_usize(1)]);
522 body_bx.br(header_bx.llbb());
523 header_bx.add_incoming_to_phi(current, next, body_bx.llbb());
528 fn range_metadata(&mut self, load: &'ll Value, range: Range<u128>) {
529 if self.sess().target.target.arch == "amdgpu" {
530 // amdgpu/LLVM does something weird and thinks a i64 value is
531 // split into a v2i32, halving the bitwidth LLVM expects,
532 // tripping an assertion. So, for now, just disable this
538 let llty = self.cx.val_ty(load);
540 self.cx.const_uint_big(llty, range.start),
541 self.cx.const_uint_big(llty, range.end),
544 llvm::LLVMSetMetadata(
546 llvm::MD_range as c_uint,
547 llvm::LLVMMDNodeInContext(self.cx.llcx, v.as_ptr(), v.len() as c_uint),
552 fn nonnull_metadata(&mut self, load: &'ll Value) {
554 llvm::LLVMSetMetadata(
556 llvm::MD_nonnull as c_uint,
557 llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0),
562 fn store(&mut self, val: &'ll Value, ptr: &'ll Value, align: Align) -> &'ll Value {
563 self.store_with_flags(val, ptr, align, MemFlags::empty())
573 debug!("Store {:?} -> {:?} ({:?})", val, ptr, flags);
574 let ptr = self.check_store(val, ptr);
576 let store = llvm::LLVMBuildStore(self.llbuilder, val, ptr);
578 if flags.contains(MemFlags::UNALIGNED) { 1 } else { align.bytes() as c_uint };
579 llvm::LLVMSetAlignment(store, align);
580 if flags.contains(MemFlags::VOLATILE) {
581 llvm::LLVMSetVolatile(store, llvm::True);
583 if flags.contains(MemFlags::NONTEMPORAL) {
584 // According to LLVM [1] building a nontemporal store must
585 // *always* point to a metadata value of the integer 1.
587 // [1]: http://llvm.org/docs/LangRef.html#store-instruction
588 let one = self.cx.const_i32(1);
589 let node = llvm::LLVMMDNodeInContext(self.cx.llcx, &one, 1);
590 llvm::LLVMSetMetadata(store, llvm::MD_nontemporal as c_uint, node);
600 order: rustc_codegen_ssa::common::AtomicOrdering,
603 debug!("Store {:?} -> {:?}", val, ptr);
604 let ptr = self.check_store(val, ptr);
606 let store = llvm::LLVMRustBuildAtomicStore(
610 AtomicOrdering::from_generic(order),
612 // LLVM requires the alignment of atomic stores to be at least the size of the type.
613 llvm::LLVMSetAlignment(store, size.bytes() as c_uint);
617 fn gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
623 indices.len() as c_uint,
629 fn inbounds_gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
631 llvm::LLVMBuildInBoundsGEP(
635 indices.len() as c_uint,
641 fn struct_gep(&mut self, ptr: &'ll Value, idx: u64) -> &'ll Value {
642 assert_eq!(idx as c_uint as u64, idx);
643 unsafe { llvm::LLVMBuildStructGEP(self.llbuilder, ptr, idx as c_uint, UNNAMED) }
647 fn trunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
648 unsafe { llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty, UNNAMED) }
651 fn sext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
652 unsafe { llvm::LLVMBuildSExt(self.llbuilder, val, dest_ty, UNNAMED) }
655 fn fptoui(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
656 unsafe { llvm::LLVMBuildFPToUI(self.llbuilder, val, dest_ty, UNNAMED) }
659 fn fptosi(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
660 unsafe { llvm::LLVMBuildFPToSI(self.llbuilder, val, dest_ty, UNNAMED) }
663 fn uitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
664 unsafe { llvm::LLVMBuildUIToFP(self.llbuilder, val, dest_ty, UNNAMED) }
667 fn sitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
668 unsafe { llvm::LLVMBuildSIToFP(self.llbuilder, val, dest_ty, UNNAMED) }
671 fn fptrunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
672 unsafe { llvm::LLVMBuildFPTrunc(self.llbuilder, val, dest_ty, UNNAMED) }
675 fn fpext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
676 unsafe { llvm::LLVMBuildFPExt(self.llbuilder, val, dest_ty, UNNAMED) }
679 fn ptrtoint(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
680 unsafe { llvm::LLVMBuildPtrToInt(self.llbuilder, val, dest_ty, UNNAMED) }
683 fn inttoptr(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
684 unsafe { llvm::LLVMBuildIntToPtr(self.llbuilder, val, dest_ty, UNNAMED) }
687 fn bitcast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
688 unsafe { llvm::LLVMBuildBitCast(self.llbuilder, val, dest_ty, UNNAMED) }
691 fn intcast(&mut self, val: &'ll Value, dest_ty: &'ll Type, is_signed: bool) -> &'ll Value {
692 unsafe { llvm::LLVMRustBuildIntCast(self.llbuilder, val, dest_ty, is_signed) }
695 fn pointercast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
696 unsafe { llvm::LLVMBuildPointerCast(self.llbuilder, val, dest_ty, UNNAMED) }
700 fn icmp(&mut self, op: IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
701 let op = llvm::IntPredicate::from_generic(op);
702 unsafe { llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) }
705 fn fcmp(&mut self, op: RealPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
706 unsafe { llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) }
709 /* Miscellaneous instructions */
719 if flags.contains(MemFlags::NONTEMPORAL) {
720 // HACK(nox): This is inefficient but there is no nontemporal memcpy.
721 let val = self.load(src, src_align);
722 let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
723 self.store_with_flags(val, ptr, dst_align, flags);
726 let size = self.intcast(size, self.type_isize(), false);
727 let is_volatile = flags.contains(MemFlags::VOLATILE);
728 let dst = self.pointercast(dst, self.type_i8p());
729 let src = self.pointercast(src, self.type_i8p());
731 llvm::LLVMRustBuildMemCpy(
734 dst_align.bytes() as c_uint,
736 src_align.bytes() as c_uint,
752 if flags.contains(MemFlags::NONTEMPORAL) {
753 // HACK(nox): This is inefficient but there is no nontemporal memmove.
754 let val = self.load(src, src_align);
755 let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
756 self.store_with_flags(val, ptr, dst_align, flags);
759 let size = self.intcast(size, self.type_isize(), false);
760 let is_volatile = flags.contains(MemFlags::VOLATILE);
761 let dst = self.pointercast(dst, self.type_i8p());
762 let src = self.pointercast(src, self.type_i8p());
764 llvm::LLVMRustBuildMemMove(
767 dst_align.bytes() as c_uint,
769 src_align.bytes() as c_uint,
779 fill_byte: &'ll Value,
784 let is_volatile = flags.contains(MemFlags::VOLATILE);
785 let ptr = self.pointercast(ptr, self.type_i8p());
787 llvm::LLVMRustBuildMemSet(
790 align.bytes() as c_uint,
801 then_val: &'ll Value,
802 else_val: &'ll Value,
804 unsafe { llvm::LLVMBuildSelect(self.llbuilder, cond, then_val, else_val, UNNAMED) }
808 fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
809 unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) }
812 fn extract_element(&mut self, vec: &'ll Value, idx: &'ll Value) -> &'ll Value {
813 unsafe { llvm::LLVMBuildExtractElement(self.llbuilder, vec, idx, UNNAMED) }
816 fn vector_splat(&mut self, num_elts: usize, elt: &'ll Value) -> &'ll Value {
818 let elt_ty = self.cx.val_ty(elt);
819 let undef = llvm::LLVMGetUndef(self.type_vector(elt_ty, num_elts as u64));
820 let vec = self.insert_element(undef, elt, self.cx.const_i32(0));
821 let vec_i32_ty = self.type_vector(self.type_i32(), num_elts as u64);
822 self.shuffle_vector(vec, undef, self.const_null(vec_i32_ty))
826 fn extract_value(&mut self, agg_val: &'ll Value, idx: u64) -> &'ll Value {
827 assert_eq!(idx as c_uint as u64, idx);
828 unsafe { llvm::LLVMBuildExtractValue(self.llbuilder, agg_val, idx as c_uint, UNNAMED) }
831 fn insert_value(&mut self, agg_val: &'ll Value, elt: &'ll Value, idx: u64) -> &'ll Value {
832 assert_eq!(idx as c_uint as u64, idx);
833 unsafe { llvm::LLVMBuildInsertValue(self.llbuilder, agg_val, elt, idx as c_uint, UNNAMED) }
843 llvm::LLVMBuildLandingPad(self.llbuilder, ty, pers_fn, num_clauses as c_uint, UNNAMED)
847 fn set_cleanup(&mut self, landing_pad: &'ll Value) {
849 llvm::LLVMSetCleanup(landing_pad, llvm::True);
853 fn resume(&mut self, exn: &'ll Value) -> &'ll Value {
854 unsafe { llvm::LLVMBuildResume(self.llbuilder, exn) }
857 fn cleanup_pad(&mut self, parent: Option<&'ll Value>, args: &[&'ll Value]) -> Funclet<'ll> {
858 let name = const_cstr!("cleanuppad");
860 llvm::LLVMRustBuildCleanupPad(
863 args.len() as c_uint,
868 Funclet::new(ret.expect("LLVM does not have support for cleanuppad"))
873 funclet: &Funclet<'ll>,
874 unwind: Option<&'ll BasicBlock>,
877 unsafe { llvm::LLVMRustBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind) };
878 ret.expect("LLVM does not have support for cleanupret")
881 fn catch_pad(&mut self, parent: &'ll Value, args: &[&'ll Value]) -> Funclet<'ll> {
882 let name = const_cstr!("catchpad");
884 llvm::LLVMRustBuildCatchPad(
887 args.len() as c_uint,
892 Funclet::new(ret.expect("LLVM does not have support for catchpad"))
897 parent: Option<&'ll Value>,
898 unwind: Option<&'ll BasicBlock>,
901 let name = const_cstr!("catchswitch");
903 llvm::LLVMRustBuildCatchSwitch(
907 num_handlers as c_uint,
911 ret.expect("LLVM does not have support for catchswitch")
914 fn add_handler(&mut self, catch_switch: &'ll Value, handler: &'ll BasicBlock) {
916 llvm::LLVMRustAddHandler(catch_switch, handler);
920 fn set_personality_fn(&mut self, personality: &'ll Value) {
922 llvm::LLVMSetPersonalityFn(self.llfn(), personality);
932 order: rustc_codegen_ssa::common::AtomicOrdering,
933 failure_order: rustc_codegen_ssa::common::AtomicOrdering,
936 let weak = if weak { llvm::True } else { llvm::False };
938 llvm::LLVMRustBuildAtomicCmpXchg(
943 AtomicOrdering::from_generic(order),
944 AtomicOrdering::from_generic(failure_order),
951 op: rustc_codegen_ssa::common::AtomicRmwBinOp,
954 order: rustc_codegen_ssa::common::AtomicOrdering,
957 llvm::LLVMBuildAtomicRMW(
959 AtomicRmwBinOp::from_generic(op),
962 AtomicOrdering::from_generic(order),
970 order: rustc_codegen_ssa::common::AtomicOrdering,
971 scope: rustc_codegen_ssa::common::SynchronizationScope,
974 llvm::LLVMRustBuildAtomicFence(
976 AtomicOrdering::from_generic(order),
977 SynchronizationScope::from_generic(scope),
982 fn set_invariant_load(&mut self, load: &'ll Value) {
984 llvm::LLVMSetMetadata(
986 llvm::MD_invariant_load as c_uint,
987 llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0),
992 fn lifetime_start(&mut self, ptr: &'ll Value, size: Size) {
993 self.call_lifetime_intrinsic("llvm.lifetime.start.p0i8", ptr, size);
996 fn lifetime_end(&mut self, ptr: &'ll Value, size: Size) {
997 self.call_lifetime_intrinsic("llvm.lifetime.end.p0i8", ptr, size);
1003 args: &[&'ll Value],
1004 funclet: Option<&Funclet<'ll>>,
1006 debug!("call {:?} with args ({:?})", llfn, args);
1008 let args = self.check_call("call", llfn, args);
1009 let bundle = funclet.map(|funclet| funclet.bundle());
1010 let bundle = bundle.as_ref().map(|b| &*b.raw);
1013 llvm::LLVMRustBuildCall(
1016 args.as_ptr() as *const &llvm::Value,
1017 args.len() as c_uint,
1024 fn zext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
1025 unsafe { llvm::LLVMBuildZExt(self.llbuilder, val, dest_ty, UNNAMED) }
1028 fn cx(&self) -> &CodegenCx<'ll, 'tcx> {
1032 unsafe fn delete_basic_block(&mut self, bb: &'ll BasicBlock) {
1033 llvm::LLVMDeleteBasicBlock(bb);
1036 fn do_not_inline(&mut self, llret: &'ll Value) {
1037 llvm::Attribute::NoInline.apply_callsite(llvm::AttributePlace::Function, llret);
1041 impl StaticBuilderMethods for Builder<'a, 'll, 'tcx> {
1042 fn get_static(&mut self, def_id: DefId) -> &'ll Value {
1043 // Forward to the `get_static` method of `CodegenCx`
1044 self.cx().get_static(def_id)
1048 impl Builder<'a, 'll, 'tcx> {
1049 pub fn llfn(&self) -> &'ll Value {
1050 unsafe { llvm::LLVMGetBasicBlockParent(self.llbb()) }
1053 fn position_at_start(&mut self, llbb: &'ll BasicBlock) {
1055 llvm::LLVMRustPositionBuilderAtStart(self.llbuilder, llbb);
1059 pub fn minnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
1060 unsafe { llvm::LLVMRustBuildMinNum(self.llbuilder, lhs, rhs) }
1063 pub fn maxnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
1064 unsafe { llvm::LLVMRustBuildMaxNum(self.llbuilder, lhs, rhs) }
1067 pub fn insert_element(
1073 unsafe { llvm::LLVMBuildInsertElement(self.llbuilder, vec, elt, idx, UNNAMED) }
1076 pub fn shuffle_vector(
1082 unsafe { llvm::LLVMBuildShuffleVector(self.llbuilder, v1, v2, mask, UNNAMED) }
1085 pub fn vector_reduce_fadd(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1086 unsafe { llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src) }
1088 pub fn vector_reduce_fmul(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1089 unsafe { llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src) }
1091 pub fn vector_reduce_fadd_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1093 let instr = llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src);
1094 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1098 pub fn vector_reduce_fmul_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1100 let instr = llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src);
1101 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1105 pub fn vector_reduce_add(&mut self, src: &'ll Value) -> &'ll Value {
1106 unsafe { llvm::LLVMRustBuildVectorReduceAdd(self.llbuilder, src) }
1108 pub fn vector_reduce_mul(&mut self, src: &'ll Value) -> &'ll Value {
1109 unsafe { llvm::LLVMRustBuildVectorReduceMul(self.llbuilder, src) }
1111 pub fn vector_reduce_and(&mut self, src: &'ll Value) -> &'ll Value {
1112 unsafe { llvm::LLVMRustBuildVectorReduceAnd(self.llbuilder, src) }
1114 pub fn vector_reduce_or(&mut self, src: &'ll Value) -> &'ll Value {
1115 unsafe { llvm::LLVMRustBuildVectorReduceOr(self.llbuilder, src) }
1117 pub fn vector_reduce_xor(&mut self, src: &'ll Value) -> &'ll Value {
1118 unsafe { llvm::LLVMRustBuildVectorReduceXor(self.llbuilder, src) }
1120 pub fn vector_reduce_fmin(&mut self, src: &'ll Value) -> &'ll Value {
1122 llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ false)
1125 pub fn vector_reduce_fmax(&mut self, src: &'ll Value) -> &'ll Value {
1127 llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ false)
1130 pub fn vector_reduce_fmin_fast(&mut self, src: &'ll Value) -> &'ll Value {
1133 llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ true);
1134 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1138 pub fn vector_reduce_fmax_fast(&mut self, src: &'ll Value) -> &'ll Value {
1141 llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ true);
1142 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1146 pub fn vector_reduce_min(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
1147 unsafe { llvm::LLVMRustBuildVectorReduceMin(self.llbuilder, src, is_signed) }
1149 pub fn vector_reduce_max(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
1150 unsafe { llvm::LLVMRustBuildVectorReduceMax(self.llbuilder, src, is_signed) }
1153 pub fn add_clause(&mut self, landing_pad: &'ll Value, clause: &'ll Value) {
1155 llvm::LLVMAddClause(landing_pad, clause);
1159 pub fn catch_ret(&mut self, funclet: &Funclet<'ll>, unwind: &'ll BasicBlock) -> &'ll Value {
1161 unsafe { llvm::LLVMRustBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind) };
1162 ret.expect("LLVM does not have support for catchret")
1165 fn check_store(&mut self, val: &'ll Value, ptr: &'ll Value) -> &'ll Value {
1166 let dest_ptr_ty = self.cx.val_ty(ptr);
1167 let stored_ty = self.cx.val_ty(val);
1168 let stored_ptr_ty = self.cx.type_ptr_to(stored_ty);
1170 assert_eq!(self.cx.type_kind(dest_ptr_ty), TypeKind::Pointer);
1172 if dest_ptr_ty == stored_ptr_ty {
1176 "type mismatch in store. \
1177 Expected {:?}, got {:?}; inserting bitcast",
1178 dest_ptr_ty, stored_ptr_ty
1180 self.bitcast(ptr, stored_ptr_ty)
1188 args: &'b [&'ll Value],
1189 ) -> Cow<'b, [&'ll Value]> {
1190 let mut fn_ty = self.cx.val_ty(llfn);
1191 // Strip off pointers
1192 while self.cx.type_kind(fn_ty) == TypeKind::Pointer {
1193 fn_ty = self.cx.element_type(fn_ty);
1197 self.cx.type_kind(fn_ty) == TypeKind::Function,
1198 "builder::{} not passed a function, but {:?}",
1203 let param_tys = self.cx.func_params_types(fn_ty);
1205 let all_args_match = param_tys
1207 .zip(args.iter().map(|&v| self.val_ty(v)))
1208 .all(|(expected_ty, actual_ty)| *expected_ty == actual_ty);
1211 return Cow::Borrowed(args);
1214 let casted_args: Vec<_> = param_tys
1218 .map(|(i, (expected_ty, &actual_val))| {
1219 let actual_ty = self.val_ty(actual_val);
1220 if expected_ty != actual_ty {
1222 "type mismatch in function call of {:?}. \
1223 Expected {:?} for param {}, got {:?}; injecting bitcast",
1224 llfn, expected_ty, i, actual_ty
1226 self.bitcast(actual_val, expected_ty)
1233 Cow::Owned(casted_args)
1236 pub fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
1237 unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) }
1240 fn call_lifetime_intrinsic(&mut self, intrinsic: &str, ptr: &'ll Value, size: Size) {
1241 let size = size.bytes();
1246 let opts = &self.cx.sess().opts;
1247 let emit = match opts.debugging_opts.sanitizer {
1248 // Some sanitizer use lifetime intrinsics. When they are in use,
1249 // emit lifetime intrinsics regardless of optimization level.
1250 Some(Sanitizer::Address) | Some(Sanitizer::Memory) => true,
1251 _ => opts.optimize != config::OptLevel::No,
1257 let lifetime_intrinsic = self.cx.get_intrinsic(intrinsic);
1259 let ptr = self.pointercast(ptr, self.cx.type_i8p());
1260 self.call(lifetime_intrinsic, &[self.cx.const_u64(size), ptr], None);
1263 fn phi(&mut self, ty: &'ll Type, vals: &[&'ll Value], bbs: &[&'ll BasicBlock]) -> &'ll Value {
1264 assert_eq!(vals.len(), bbs.len());
1265 let phi = unsafe { llvm::LLVMBuildPhi(self.llbuilder, ty, UNNAMED) };
1267 llvm::LLVMAddIncoming(phi, vals.as_ptr(), bbs.as_ptr(), vals.len() as c_uint);
1272 fn add_incoming_to_phi(&mut self, phi: &'ll Value, val: &'ll Value, bb: &'ll BasicBlock) {
1274 llvm::LLVMAddIncoming(phi, &val, &bb, 1 as c_uint);