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_codegen_ssa::base::to_immediate;
11 use rustc_codegen_ssa::common::{IntPredicate, RealPredicate, TypeKind};
12 use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
13 use rustc_codegen_ssa::mir::place::PlaceRef;
14 use rustc_codegen_ssa::traits::*;
15 use rustc_codegen_ssa::MemFlags;
16 use rustc_data_structures::const_cstr;
17 use rustc_data_structures::small_c_str::SmallCStr;
18 use rustc_hir::def_id::DefId;
19 use rustc_middle::ty::layout::TyAndLayout;
20 use rustc_middle::ty::{self, Ty, TyCtxt};
22 use rustc_target::abi::{self, Align, Size};
23 use rustc_target::spec::{HasTargetSpec, Target};
26 use std::iter::TrustedLen;
27 use std::ops::{Deref, Range};
30 // All Builders must have an llfn associated with them
32 pub struct Builder<'a, 'll, 'tcx> {
33 pub llbuilder: &'ll mut llvm::Builder<'ll>,
34 pub cx: &'a CodegenCx<'ll, 'tcx>,
37 impl Drop for Builder<'a, 'll, 'tcx> {
40 llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _));
45 // FIXME(eddyb) use a checked constructor when they become `const fn`.
46 const EMPTY_C_STR: &CStr = unsafe { CStr::from_bytes_with_nul_unchecked(b"\0") };
48 /// Empty string, to be used where LLVM expects an instruction name, indicating
49 /// that the instruction is to be left unnamed (i.e. numbered, in textual IR).
50 // FIXME(eddyb) pass `&CStr` directly to FFI once it's a thin pointer.
51 const UNNAMED: *const c_char = EMPTY_C_STR.as_ptr();
53 impl BackendTypes for Builder<'_, 'll, 'tcx> {
54 type Value = <CodegenCx<'ll, 'tcx> as BackendTypes>::Value;
55 type Function = <CodegenCx<'ll, 'tcx> as BackendTypes>::Function;
56 type BasicBlock = <CodegenCx<'ll, 'tcx> as BackendTypes>::BasicBlock;
57 type Type = <CodegenCx<'ll, 'tcx> as BackendTypes>::Type;
58 type Funclet = <CodegenCx<'ll, 'tcx> as BackendTypes>::Funclet;
60 type DIScope = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIScope;
61 type DIVariable = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIVariable;
64 impl abi::HasDataLayout for Builder<'_, '_, '_> {
65 fn data_layout(&self) -> &abi::TargetDataLayout {
70 impl ty::layout::HasTyCtxt<'tcx> for Builder<'_, '_, 'tcx> {
71 fn tcx(&self) -> TyCtxt<'tcx> {
76 impl ty::layout::HasParamEnv<'tcx> for Builder<'_, '_, 'tcx> {
77 fn param_env(&self) -> ty::ParamEnv<'tcx> {
82 impl HasTargetSpec for Builder<'_, '_, 'tcx> {
83 fn target_spec(&self) -> &Target {
84 &self.cx.target_spec()
88 impl abi::LayoutOf for Builder<'_, '_, 'tcx> {
90 type TyAndLayout = TyAndLayout<'tcx>;
92 fn layout_of(&self, ty: Ty<'tcx>) -> Self::TyAndLayout {
97 impl Deref for Builder<'_, 'll, 'tcx> {
98 type Target = CodegenCx<'ll, 'tcx>;
100 fn deref(&self) -> &Self::Target {
105 impl HasCodegen<'tcx> for Builder<'_, 'll, 'tcx> {
106 type CodegenCx = CodegenCx<'ll, 'tcx>;
109 macro_rules! builder_methods_for_value_instructions {
110 ($($name:ident($($arg:ident),*) => $llvm_capi:ident),+ $(,)?) => {
111 $(fn $name(&mut self, $($arg: &'ll Value),*) -> &'ll Value {
113 llvm::$llvm_capi(self.llbuilder, $($arg,)* UNNAMED)
119 impl BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
120 fn new_block<'b>(cx: &'a CodegenCx<'ll, 'tcx>, llfn: &'ll Value, name: &'b str) -> Self {
121 let mut bx = Builder::with_cx(cx);
123 let name = SmallCStr::new(name);
124 llvm::LLVMAppendBasicBlockInContext(cx.llcx, llfn, name.as_ptr())
126 bx.position_at_end(llbb);
130 fn with_cx(cx: &'a CodegenCx<'ll, 'tcx>) -> Self {
131 // Create a fresh builder from the crate context.
132 let llbuilder = unsafe { llvm::LLVMCreateBuilderInContext(cx.llcx) };
133 Builder { llbuilder, cx }
136 fn build_sibling_block(&self, name: &str) -> Self {
137 Builder::new_block(self.cx, self.llfn(), name)
140 fn llbb(&self) -> &'ll BasicBlock {
141 unsafe { llvm::LLVMGetInsertBlock(self.llbuilder) }
144 fn position_at_end(&mut self, llbb: &'ll BasicBlock) {
146 llvm::LLVMPositionBuilderAtEnd(self.llbuilder, llbb);
150 fn ret_void(&mut self) {
152 llvm::LLVMBuildRetVoid(self.llbuilder);
156 fn ret(&mut self, v: &'ll Value) {
158 llvm::LLVMBuildRet(self.llbuilder, v);
162 fn br(&mut self, dest: &'ll BasicBlock) {
164 llvm::LLVMBuildBr(self.llbuilder, dest);
171 then_llbb: &'ll BasicBlock,
172 else_llbb: &'ll BasicBlock,
175 llvm::LLVMBuildCondBr(self.llbuilder, cond, then_llbb, else_llbb);
182 else_llbb: &'ll BasicBlock,
183 cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)> + TrustedLen,
186 unsafe { llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, cases.len() as c_uint) };
187 for (on_val, dest) in cases {
188 let on_val = self.const_uint_big(self.val_ty(v), on_val);
189 unsafe { llvm::LLVMAddCase(switch, on_val, dest) }
197 then: &'ll BasicBlock,
198 catch: &'ll BasicBlock,
199 funclet: Option<&Funclet<'ll>>,
201 debug!("invoke {:?} with args ({:?})", llfn, args);
203 let args = self.check_call("invoke", llfn, args);
204 let bundle = funclet.map(|funclet| funclet.bundle());
205 let bundle = bundle.as_ref().map(|b| &*b.raw);
208 llvm::LLVMRustBuildInvoke(
212 args.len() as c_uint,
221 fn unreachable(&mut self) {
223 llvm::LLVMBuildUnreachable(self.llbuilder);
227 builder_methods_for_value_instructions! {
228 add(a, b) => LLVMBuildAdd,
229 fadd(a, b) => LLVMBuildFAdd,
230 sub(a, b) => LLVMBuildSub,
231 fsub(a, b) => LLVMBuildFSub,
232 mul(a, b) => LLVMBuildMul,
233 fmul(a, b) => LLVMBuildFMul,
234 udiv(a, b) => LLVMBuildUDiv,
235 exactudiv(a, b) => LLVMBuildExactUDiv,
236 sdiv(a, b) => LLVMBuildSDiv,
237 exactsdiv(a, b) => LLVMBuildExactSDiv,
238 fdiv(a, b) => LLVMBuildFDiv,
239 urem(a, b) => LLVMBuildURem,
240 srem(a, b) => LLVMBuildSRem,
241 frem(a, b) => LLVMBuildFRem,
242 shl(a, b) => LLVMBuildShl,
243 lshr(a, b) => LLVMBuildLShr,
244 ashr(a, b) => LLVMBuildAShr,
245 and(a, b) => LLVMBuildAnd,
246 or(a, b) => LLVMBuildOr,
247 xor(a, b) => LLVMBuildXor,
248 neg(x) => LLVMBuildNeg,
249 fneg(x) => LLVMBuildFNeg,
250 not(x) => LLVMBuildNot,
251 unchecked_sadd(x, y) => LLVMBuildNSWAdd,
252 unchecked_uadd(x, y) => LLVMBuildNUWAdd,
253 unchecked_ssub(x, y) => LLVMBuildNSWSub,
254 unchecked_usub(x, y) => LLVMBuildNUWSub,
255 unchecked_smul(x, y) => LLVMBuildNSWMul,
256 unchecked_umul(x, y) => LLVMBuildNUWMul,
259 fn fadd_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
261 let instr = llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, UNNAMED);
262 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
267 fn fsub_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
269 let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, UNNAMED);
270 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
275 fn fmul_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
277 let instr = llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, UNNAMED);
278 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
283 fn fdiv_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
285 let instr = llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, UNNAMED);
286 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
291 fn frem_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
293 let instr = llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, UNNAMED);
294 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
305 ) -> (Self::Value, Self::Value) {
306 use rustc_ast::ast::IntTy::*;
307 use rustc_ast::ast::UintTy::*;
308 use rustc_middle::ty::{Int, Uint};
310 let new_kind = match ty.kind {
311 Int(t @ Isize) => Int(t.normalize(self.tcx.sess.target.ptr_width)),
312 Uint(t @ Usize) => Uint(t.normalize(self.tcx.sess.target.ptr_width)),
313 ref t @ (Uint(_) | Int(_)) => t.clone(),
314 _ => panic!("tried to get overflow intrinsic for op applied to non-int type"),
317 let name = match oop {
318 OverflowOp::Add => match new_kind {
319 Int(I8) => "llvm.sadd.with.overflow.i8",
320 Int(I16) => "llvm.sadd.with.overflow.i16",
321 Int(I32) => "llvm.sadd.with.overflow.i32",
322 Int(I64) => "llvm.sadd.with.overflow.i64",
323 Int(I128) => "llvm.sadd.with.overflow.i128",
325 Uint(U8) => "llvm.uadd.with.overflow.i8",
326 Uint(U16) => "llvm.uadd.with.overflow.i16",
327 Uint(U32) => "llvm.uadd.with.overflow.i32",
328 Uint(U64) => "llvm.uadd.with.overflow.i64",
329 Uint(U128) => "llvm.uadd.with.overflow.i128",
333 OverflowOp::Sub => match new_kind {
334 Int(I8) => "llvm.ssub.with.overflow.i8",
335 Int(I16) => "llvm.ssub.with.overflow.i16",
336 Int(I32) => "llvm.ssub.with.overflow.i32",
337 Int(I64) => "llvm.ssub.with.overflow.i64",
338 Int(I128) => "llvm.ssub.with.overflow.i128",
340 Uint(U8) => "llvm.usub.with.overflow.i8",
341 Uint(U16) => "llvm.usub.with.overflow.i16",
342 Uint(U32) => "llvm.usub.with.overflow.i32",
343 Uint(U64) => "llvm.usub.with.overflow.i64",
344 Uint(U128) => "llvm.usub.with.overflow.i128",
348 OverflowOp::Mul => match new_kind {
349 Int(I8) => "llvm.smul.with.overflow.i8",
350 Int(I16) => "llvm.smul.with.overflow.i16",
351 Int(I32) => "llvm.smul.with.overflow.i32",
352 Int(I64) => "llvm.smul.with.overflow.i64",
353 Int(I128) => "llvm.smul.with.overflow.i128",
355 Uint(U8) => "llvm.umul.with.overflow.i8",
356 Uint(U16) => "llvm.umul.with.overflow.i16",
357 Uint(U32) => "llvm.umul.with.overflow.i32",
358 Uint(U64) => "llvm.umul.with.overflow.i64",
359 Uint(U128) => "llvm.umul.with.overflow.i128",
365 let intrinsic = self.get_intrinsic(&name);
366 let res = self.call(intrinsic, &[lhs, rhs], None);
367 (self.extract_value(res, 0), self.extract_value(res, 1))
370 fn alloca(&mut self, ty: &'ll Type, align: Align) -> &'ll Value {
371 let mut bx = Builder::with_cx(self.cx);
372 bx.position_at_start(unsafe { llvm::LLVMGetFirstBasicBlock(self.llfn()) });
373 bx.dynamic_alloca(ty, align)
376 fn dynamic_alloca(&mut self, ty: &'ll Type, align: Align) -> &'ll Value {
378 let alloca = llvm::LLVMBuildAlloca(self.llbuilder, ty, UNNAMED);
379 llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
384 fn array_alloca(&mut self, ty: &'ll Type, len: &'ll Value, align: Align) -> &'ll Value {
386 let alloca = llvm::LLVMBuildArrayAlloca(self.llbuilder, ty, len, UNNAMED);
387 llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint);
392 fn load(&mut self, ptr: &'ll Value, align: Align) -> &'ll Value {
394 let load = llvm::LLVMBuildLoad(self.llbuilder, ptr, UNNAMED);
395 llvm::LLVMSetAlignment(load, align.bytes() as c_uint);
400 fn volatile_load(&mut self, ptr: &'ll Value) -> &'ll Value {
402 let load = llvm::LLVMBuildLoad(self.llbuilder, ptr, UNNAMED);
403 llvm::LLVMSetVolatile(load, llvm::True);
411 order: rustc_codegen_ssa::common::AtomicOrdering,
415 let load = llvm::LLVMRustBuildAtomicLoad(
419 AtomicOrdering::from_generic(order),
421 // LLVM requires the alignment of atomic loads to be at least the size of the type.
422 llvm::LLVMSetAlignment(load, size.bytes() as c_uint);
427 fn load_operand(&mut self, place: PlaceRef<'tcx, &'ll Value>) -> OperandRef<'tcx, &'ll Value> {
428 debug!("PlaceRef::load: {:?}", place);
430 assert_eq!(place.llextra.is_some(), place.layout.is_unsized());
432 if place.layout.is_zst() {
433 return OperandRef::new_zst(self, place.layout);
436 fn scalar_load_metadata<'a, 'll, 'tcx>(
437 bx: &mut Builder<'a, 'll, 'tcx>,
439 scalar: &abi::Scalar,
441 let vr = scalar.valid_range.clone();
444 let range = scalar.valid_range_exclusive(bx);
445 if range.start != range.end {
446 bx.range_metadata(load, range);
449 abi::Pointer if vr.start() < vr.end() && !vr.contains(&0) => {
450 bx.nonnull_metadata(load);
456 let val = if let Some(llextra) = place.llextra {
457 OperandValue::Ref(place.llval, Some(llextra), place.align)
458 } else if place.layout.is_llvm_immediate() {
459 let mut const_llval = None;
461 if let Some(global) = llvm::LLVMIsAGlobalVariable(place.llval) {
462 if llvm::LLVMIsGlobalConstant(global) == llvm::True {
463 const_llval = llvm::LLVMGetInitializer(global);
467 let llval = const_llval.unwrap_or_else(|| {
468 let load = self.load(place.llval, place.align);
469 if let abi::Abi::Scalar(ref scalar) = place.layout.abi {
470 scalar_load_metadata(self, load, scalar);
474 OperandValue::Immediate(to_immediate(self, llval, place.layout))
475 } else if let abi::Abi::ScalarPair(ref a, ref b) = place.layout.abi {
476 let b_offset = a.value.size(self).align_to(b.value.align(self).abi);
478 let mut load = |i, scalar: &abi::Scalar, align| {
479 let llptr = self.struct_gep(place.llval, i as u64);
480 let load = self.load(llptr, align);
481 scalar_load_metadata(self, load, scalar);
482 if scalar.is_bool() {
483 self.trunc(load, self.type_i1())
490 load(0, a, place.align),
491 load(1, b, place.align.restrict_for_offset(b_offset)),
494 OperandValue::Ref(place.llval, None, place.align)
497 OperandRef { val, layout: place.layout }
500 fn write_operand_repeatedly(
502 cg_elem: OperandRef<'tcx, &'ll Value>,
504 dest: PlaceRef<'tcx, &'ll Value>,
506 let zero = self.const_usize(0);
507 let count = self.const_usize(count);
508 let start = dest.project_index(&mut self, zero).llval;
509 let end = dest.project_index(&mut self, count).llval;
511 let mut header_bx = self.build_sibling_block("repeat_loop_header");
512 let mut body_bx = self.build_sibling_block("repeat_loop_body");
513 let next_bx = self.build_sibling_block("repeat_loop_next");
515 self.br(header_bx.llbb());
516 let current = header_bx.phi(self.val_ty(start), &[start], &[self.llbb()]);
518 let keep_going = header_bx.icmp(IntPredicate::IntNE, current, end);
519 header_bx.cond_br(keep_going, body_bx.llbb(), next_bx.llbb());
521 let align = dest.align.restrict_for_offset(dest.layout.field(self.cx(), 0).size);
524 .store(&mut body_bx, PlaceRef::new_sized_aligned(current, cg_elem.layout, align));
526 let next = body_bx.inbounds_gep(current, &[self.const_usize(1)]);
527 body_bx.br(header_bx.llbb());
528 header_bx.add_incoming_to_phi(current, next, body_bx.llbb());
533 fn range_metadata(&mut self, load: &'ll Value, range: Range<u128>) {
534 if self.sess().target.target.arch == "amdgpu" {
535 // amdgpu/LLVM does something weird and thinks a i64 value is
536 // split into a v2i32, halving the bitwidth LLVM expects,
537 // tripping an assertion. So, for now, just disable this
543 let llty = self.cx.val_ty(load);
545 self.cx.const_uint_big(llty, range.start),
546 self.cx.const_uint_big(llty, range.end),
549 llvm::LLVMSetMetadata(
551 llvm::MD_range as c_uint,
552 llvm::LLVMMDNodeInContext(self.cx.llcx, v.as_ptr(), v.len() as c_uint),
557 fn nonnull_metadata(&mut self, load: &'ll Value) {
559 llvm::LLVMSetMetadata(
561 llvm::MD_nonnull as c_uint,
562 llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0),
567 fn store(&mut self, val: &'ll Value, ptr: &'ll Value, align: Align) -> &'ll Value {
568 self.store_with_flags(val, ptr, align, MemFlags::empty())
578 debug!("Store {:?} -> {:?} ({:?})", val, ptr, flags);
579 let ptr = self.check_store(val, ptr);
581 let store = llvm::LLVMBuildStore(self.llbuilder, val, ptr);
583 if flags.contains(MemFlags::UNALIGNED) { 1 } else { align.bytes() as c_uint };
584 llvm::LLVMSetAlignment(store, align);
585 if flags.contains(MemFlags::VOLATILE) {
586 llvm::LLVMSetVolatile(store, llvm::True);
588 if flags.contains(MemFlags::NONTEMPORAL) {
589 // According to LLVM [1] building a nontemporal store must
590 // *always* point to a metadata value of the integer 1.
592 // [1]: http://llvm.org/docs/LangRef.html#store-instruction
593 let one = self.cx.const_i32(1);
594 let node = llvm::LLVMMDNodeInContext(self.cx.llcx, &one, 1);
595 llvm::LLVMSetMetadata(store, llvm::MD_nontemporal as c_uint, node);
605 order: rustc_codegen_ssa::common::AtomicOrdering,
608 debug!("Store {:?} -> {:?}", val, ptr);
609 let ptr = self.check_store(val, ptr);
611 let store = llvm::LLVMRustBuildAtomicStore(
615 AtomicOrdering::from_generic(order),
617 // LLVM requires the alignment of atomic stores to be at least the size of the type.
618 llvm::LLVMSetAlignment(store, size.bytes() as c_uint);
622 fn gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
628 indices.len() as c_uint,
634 fn inbounds_gep(&mut self, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value {
636 llvm::LLVMBuildInBoundsGEP(
640 indices.len() as c_uint,
646 fn struct_gep(&mut self, ptr: &'ll Value, idx: u64) -> &'ll Value {
647 assert_eq!(idx as c_uint as u64, idx);
648 unsafe { llvm::LLVMBuildStructGEP(self.llbuilder, ptr, idx as c_uint, UNNAMED) }
652 fn trunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
653 unsafe { llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty, UNNAMED) }
656 fn sext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
657 unsafe { llvm::LLVMBuildSExt(self.llbuilder, val, dest_ty, UNNAMED) }
660 fn fptoui_sat(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> Option<&'ll Value> {
661 if self.sess().target.target.arch == "wasm32"
662 && self.sess().target_features.contains(&sym::wasm_nontrapping_fptoint)
664 let src_ty = self.cx.val_ty(val);
665 let float_width = self.cx.float_width(src_ty);
666 let int_width = self.cx.int_width(dest_ty);
667 let name = match (int_width, float_width) {
668 (32, 32) => Some("llvm.wasm.trunc.saturate.unsigned.i32.f32"),
669 (32, 64) => Some("llvm.wasm.trunc.saturate.unsigned.i32.f64"),
670 (64, 32) => Some("llvm.wasm.trunc.saturate.unsigned.i64.f32"),
671 (64, 64) => Some("llvm.wasm.trunc.saturate.unsigned.i64.f64"),
674 if let Some(name) = name {
675 let intrinsic = self.get_intrinsic(name);
676 return Some(self.call(intrinsic, &[val], None));
682 fn fptosi_sat(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> Option<&'ll Value> {
683 if self.sess().target.target.arch == "wasm32"
684 && self.sess().target_features.contains(&sym::wasm_nontrapping_fptoint)
686 let src_ty = self.cx.val_ty(val);
687 let float_width = self.cx.float_width(src_ty);
688 let int_width = self.cx.int_width(dest_ty);
689 let name = match (int_width, float_width) {
690 (32, 32) => Some("llvm.wasm.trunc.saturate.signed.i32.f32"),
691 (32, 64) => Some("llvm.wasm.trunc.saturate.signed.i32.f64"),
692 (64, 32) => Some("llvm.wasm.trunc.saturate.signed.i64.f32"),
693 (64, 64) => Some("llvm.wasm.trunc.saturate.signed.i64.f64"),
696 if let Some(name) = name {
697 let intrinsic = self.get_intrinsic(name);
698 return Some(self.call(intrinsic, &[val], None));
704 fn fptoui(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
705 unsafe { llvm::LLVMBuildFPToUI(self.llbuilder, val, dest_ty, UNNAMED) }
708 fn fptosi(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
709 unsafe { llvm::LLVMBuildFPToSI(self.llbuilder, val, dest_ty, UNNAMED) }
712 fn uitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
713 unsafe { llvm::LLVMBuildUIToFP(self.llbuilder, val, dest_ty, UNNAMED) }
716 fn sitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
717 unsafe { llvm::LLVMBuildSIToFP(self.llbuilder, val, dest_ty, UNNAMED) }
720 fn fptrunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
721 unsafe { llvm::LLVMBuildFPTrunc(self.llbuilder, val, dest_ty, UNNAMED) }
724 fn fpext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
725 unsafe { llvm::LLVMBuildFPExt(self.llbuilder, val, dest_ty, UNNAMED) }
728 fn ptrtoint(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
729 unsafe { llvm::LLVMBuildPtrToInt(self.llbuilder, val, dest_ty, UNNAMED) }
732 fn inttoptr(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
733 unsafe { llvm::LLVMBuildIntToPtr(self.llbuilder, val, dest_ty, UNNAMED) }
736 fn bitcast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
737 unsafe { llvm::LLVMBuildBitCast(self.llbuilder, val, dest_ty, UNNAMED) }
740 fn intcast(&mut self, val: &'ll Value, dest_ty: &'ll Type, is_signed: bool) -> &'ll Value {
741 unsafe { llvm::LLVMRustBuildIntCast(self.llbuilder, val, dest_ty, is_signed) }
744 fn pointercast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
745 unsafe { llvm::LLVMBuildPointerCast(self.llbuilder, val, dest_ty, UNNAMED) }
749 fn icmp(&mut self, op: IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
750 let op = llvm::IntPredicate::from_generic(op);
751 unsafe { llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) }
754 fn fcmp(&mut self, op: RealPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
755 unsafe { llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) }
758 /* Miscellaneous instructions */
768 if flags.contains(MemFlags::NONTEMPORAL) {
769 // HACK(nox): This is inefficient but there is no nontemporal memcpy.
770 let val = self.load(src, src_align);
771 let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
772 self.store_with_flags(val, ptr, dst_align, flags);
775 let size = self.intcast(size, self.type_isize(), false);
776 let is_volatile = flags.contains(MemFlags::VOLATILE);
777 let dst = self.pointercast(dst, self.type_i8p());
778 let src = self.pointercast(src, self.type_i8p());
780 llvm::LLVMRustBuildMemCpy(
783 dst_align.bytes() as c_uint,
785 src_align.bytes() as c_uint,
801 if flags.contains(MemFlags::NONTEMPORAL) {
802 // HACK(nox): This is inefficient but there is no nontemporal memmove.
803 let val = self.load(src, src_align);
804 let ptr = self.pointercast(dst, self.type_ptr_to(self.val_ty(val)));
805 self.store_with_flags(val, ptr, dst_align, flags);
808 let size = self.intcast(size, self.type_isize(), false);
809 let is_volatile = flags.contains(MemFlags::VOLATILE);
810 let dst = self.pointercast(dst, self.type_i8p());
811 let src = self.pointercast(src, self.type_i8p());
813 llvm::LLVMRustBuildMemMove(
816 dst_align.bytes() as c_uint,
818 src_align.bytes() as c_uint,
828 fill_byte: &'ll Value,
833 let is_volatile = flags.contains(MemFlags::VOLATILE);
834 let ptr = self.pointercast(ptr, self.type_i8p());
836 llvm::LLVMRustBuildMemSet(
839 align.bytes() as c_uint,
850 then_val: &'ll Value,
851 else_val: &'ll Value,
853 unsafe { llvm::LLVMBuildSelect(self.llbuilder, cond, then_val, else_val, UNNAMED) }
857 fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
858 unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) }
861 fn extract_element(&mut self, vec: &'ll Value, idx: &'ll Value) -> &'ll Value {
862 unsafe { llvm::LLVMBuildExtractElement(self.llbuilder, vec, idx, UNNAMED) }
865 fn vector_splat(&mut self, num_elts: usize, elt: &'ll Value) -> &'ll Value {
867 let elt_ty = self.cx.val_ty(elt);
868 let undef = llvm::LLVMGetUndef(self.type_vector(elt_ty, num_elts as u64));
869 let vec = self.insert_element(undef, elt, self.cx.const_i32(0));
870 let vec_i32_ty = self.type_vector(self.type_i32(), num_elts as u64);
871 self.shuffle_vector(vec, undef, self.const_null(vec_i32_ty))
875 fn extract_value(&mut self, agg_val: &'ll Value, idx: u64) -> &'ll Value {
876 assert_eq!(idx as c_uint as u64, idx);
877 unsafe { llvm::LLVMBuildExtractValue(self.llbuilder, agg_val, idx as c_uint, UNNAMED) }
880 fn insert_value(&mut self, agg_val: &'ll Value, elt: &'ll Value, idx: u64) -> &'ll Value {
881 assert_eq!(idx as c_uint as u64, idx);
882 unsafe { llvm::LLVMBuildInsertValue(self.llbuilder, agg_val, elt, idx as c_uint, UNNAMED) }
892 llvm::LLVMBuildLandingPad(self.llbuilder, ty, pers_fn, num_clauses as c_uint, UNNAMED)
896 fn set_cleanup(&mut self, landing_pad: &'ll Value) {
898 llvm::LLVMSetCleanup(landing_pad, llvm::True);
902 fn resume(&mut self, exn: &'ll Value) -> &'ll Value {
903 unsafe { llvm::LLVMBuildResume(self.llbuilder, exn) }
906 fn cleanup_pad(&mut self, parent: Option<&'ll Value>, args: &[&'ll Value]) -> Funclet<'ll> {
907 let name = const_cstr!("cleanuppad");
909 llvm::LLVMRustBuildCleanupPad(
912 args.len() as c_uint,
917 Funclet::new(ret.expect("LLVM does not have support for cleanuppad"))
922 funclet: &Funclet<'ll>,
923 unwind: Option<&'ll BasicBlock>,
926 unsafe { llvm::LLVMRustBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind) };
927 ret.expect("LLVM does not have support for cleanupret")
930 fn catch_pad(&mut self, parent: &'ll Value, args: &[&'ll Value]) -> Funclet<'ll> {
931 let name = const_cstr!("catchpad");
933 llvm::LLVMRustBuildCatchPad(
936 args.len() as c_uint,
941 Funclet::new(ret.expect("LLVM does not have support for catchpad"))
946 parent: Option<&'ll Value>,
947 unwind: Option<&'ll BasicBlock>,
950 let name = const_cstr!("catchswitch");
952 llvm::LLVMRustBuildCatchSwitch(
956 num_handlers as c_uint,
960 ret.expect("LLVM does not have support for catchswitch")
963 fn add_handler(&mut self, catch_switch: &'ll Value, handler: &'ll BasicBlock) {
965 llvm::LLVMRustAddHandler(catch_switch, handler);
969 fn set_personality_fn(&mut self, personality: &'ll Value) {
971 llvm::LLVMSetPersonalityFn(self.llfn(), personality);
981 order: rustc_codegen_ssa::common::AtomicOrdering,
982 failure_order: rustc_codegen_ssa::common::AtomicOrdering,
985 let weak = if weak { llvm::True } else { llvm::False };
987 llvm::LLVMRustBuildAtomicCmpXchg(
992 AtomicOrdering::from_generic(order),
993 AtomicOrdering::from_generic(failure_order),
1000 op: rustc_codegen_ssa::common::AtomicRmwBinOp,
1003 order: rustc_codegen_ssa::common::AtomicOrdering,
1006 llvm::LLVMBuildAtomicRMW(
1008 AtomicRmwBinOp::from_generic(op),
1011 AtomicOrdering::from_generic(order),
1019 order: rustc_codegen_ssa::common::AtomicOrdering,
1020 scope: rustc_codegen_ssa::common::SynchronizationScope,
1023 llvm::LLVMRustBuildAtomicFence(
1025 AtomicOrdering::from_generic(order),
1026 SynchronizationScope::from_generic(scope),
1031 fn set_invariant_load(&mut self, load: &'ll Value) {
1033 llvm::LLVMSetMetadata(
1035 llvm::MD_invariant_load as c_uint,
1036 llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0),
1041 fn lifetime_start(&mut self, ptr: &'ll Value, size: Size) {
1042 self.call_lifetime_intrinsic("llvm.lifetime.start.p0i8", ptr, size);
1045 fn lifetime_end(&mut self, ptr: &'ll Value, size: Size) {
1046 self.call_lifetime_intrinsic("llvm.lifetime.end.p0i8", ptr, size);
1049 fn instrprof_increment(
1051 fn_name: &'ll Value,
1053 num_counters: &'ll Value,
1057 "instrprof_increment() with args ({:?}, {:?}, {:?}, {:?})",
1058 fn_name, hash, num_counters, index
1061 let llfn = unsafe { llvm::LLVMRustGetInstrprofIncrementIntrinsic(self.cx().llmod) };
1062 let args = &[fn_name, hash, num_counters, index];
1063 let args = self.check_call("call", llfn, args);
1066 llvm::LLVMRustBuildCall(
1069 args.as_ptr() as *const &llvm::Value,
1070 args.len() as c_uint,
1079 args: &[&'ll Value],
1080 funclet: Option<&Funclet<'ll>>,
1082 debug!("call {:?} with args ({:?})", llfn, args);
1084 let args = self.check_call("call", llfn, args);
1085 let bundle = funclet.map(|funclet| funclet.bundle());
1086 let bundle = bundle.as_ref().map(|b| &*b.raw);
1089 llvm::LLVMRustBuildCall(
1092 args.as_ptr() as *const &llvm::Value,
1093 args.len() as c_uint,
1099 fn zext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
1100 unsafe { llvm::LLVMBuildZExt(self.llbuilder, val, dest_ty, UNNAMED) }
1103 fn cx(&self) -> &CodegenCx<'ll, 'tcx> {
1107 unsafe fn delete_basic_block(&mut self, bb: &'ll BasicBlock) {
1108 llvm::LLVMDeleteBasicBlock(bb);
1111 fn do_not_inline(&mut self, llret: &'ll Value) {
1112 llvm::Attribute::NoInline.apply_callsite(llvm::AttributePlace::Function, llret);
1116 impl StaticBuilderMethods for Builder<'a, 'll, 'tcx> {
1117 fn get_static(&mut self, def_id: DefId) -> &'ll Value {
1118 // Forward to the `get_static` method of `CodegenCx`
1119 self.cx().get_static(def_id)
1123 impl Builder<'a, 'll, 'tcx> {
1124 pub fn llfn(&self) -> &'ll Value {
1125 unsafe { llvm::LLVMGetBasicBlockParent(self.llbb()) }
1128 fn position_at_start(&mut self, llbb: &'ll BasicBlock) {
1130 llvm::LLVMRustPositionBuilderAtStart(self.llbuilder, llbb);
1134 pub fn minnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
1135 unsafe { llvm::LLVMRustBuildMinNum(self.llbuilder, lhs, rhs) }
1138 pub fn maxnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
1139 unsafe { llvm::LLVMRustBuildMaxNum(self.llbuilder, lhs, rhs) }
1142 pub fn insert_element(
1148 unsafe { llvm::LLVMBuildInsertElement(self.llbuilder, vec, elt, idx, UNNAMED) }
1151 pub fn shuffle_vector(
1157 unsafe { llvm::LLVMBuildShuffleVector(self.llbuilder, v1, v2, mask, UNNAMED) }
1160 pub fn vector_reduce_fadd(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1161 unsafe { llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src) }
1163 pub fn vector_reduce_fmul(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1164 unsafe { llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src) }
1166 pub fn vector_reduce_fadd_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1168 let instr = llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src);
1169 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1173 pub fn vector_reduce_fmul_fast(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value {
1175 let instr = llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src);
1176 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1180 pub fn vector_reduce_add(&mut self, src: &'ll Value) -> &'ll Value {
1181 unsafe { llvm::LLVMRustBuildVectorReduceAdd(self.llbuilder, src) }
1183 pub fn vector_reduce_mul(&mut self, src: &'ll Value) -> &'ll Value {
1184 unsafe { llvm::LLVMRustBuildVectorReduceMul(self.llbuilder, src) }
1186 pub fn vector_reduce_and(&mut self, src: &'ll Value) -> &'ll Value {
1187 unsafe { llvm::LLVMRustBuildVectorReduceAnd(self.llbuilder, src) }
1189 pub fn vector_reduce_or(&mut self, src: &'ll Value) -> &'ll Value {
1190 unsafe { llvm::LLVMRustBuildVectorReduceOr(self.llbuilder, src) }
1192 pub fn vector_reduce_xor(&mut self, src: &'ll Value) -> &'ll Value {
1193 unsafe { llvm::LLVMRustBuildVectorReduceXor(self.llbuilder, src) }
1195 pub fn vector_reduce_fmin(&mut self, src: &'ll Value) -> &'ll Value {
1197 llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ false)
1200 pub fn vector_reduce_fmax(&mut self, src: &'ll Value) -> &'ll Value {
1202 llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ false)
1205 pub fn vector_reduce_fmin_fast(&mut self, src: &'ll Value) -> &'ll Value {
1208 llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ true);
1209 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1213 pub fn vector_reduce_fmax_fast(&mut self, src: &'ll Value) -> &'ll Value {
1216 llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ true);
1217 llvm::LLVMRustSetHasUnsafeAlgebra(instr);
1221 pub fn vector_reduce_min(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
1222 unsafe { llvm::LLVMRustBuildVectorReduceMin(self.llbuilder, src, is_signed) }
1224 pub fn vector_reduce_max(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value {
1225 unsafe { llvm::LLVMRustBuildVectorReduceMax(self.llbuilder, src, is_signed) }
1228 pub fn add_clause(&mut self, landing_pad: &'ll Value, clause: &'ll Value) {
1230 llvm::LLVMAddClause(landing_pad, clause);
1234 pub fn catch_ret(&mut self, funclet: &Funclet<'ll>, unwind: &'ll BasicBlock) -> &'ll Value {
1236 unsafe { llvm::LLVMRustBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind) };
1237 ret.expect("LLVM does not have support for catchret")
1240 fn check_store(&mut self, val: &'ll Value, ptr: &'ll Value) -> &'ll Value {
1241 let dest_ptr_ty = self.cx.val_ty(ptr);
1242 let stored_ty = self.cx.val_ty(val);
1243 let stored_ptr_ty = self.cx.type_ptr_to(stored_ty);
1245 assert_eq!(self.cx.type_kind(dest_ptr_ty), TypeKind::Pointer);
1247 if dest_ptr_ty == stored_ptr_ty {
1251 "type mismatch in store. \
1252 Expected {:?}, got {:?}; inserting bitcast",
1253 dest_ptr_ty, stored_ptr_ty
1255 self.bitcast(ptr, stored_ptr_ty)
1263 args: &'b [&'ll Value],
1264 ) -> Cow<'b, [&'ll Value]> {
1265 let mut fn_ty = self.cx.val_ty(llfn);
1266 // Strip off pointers
1267 while self.cx.type_kind(fn_ty) == TypeKind::Pointer {
1268 fn_ty = self.cx.element_type(fn_ty);
1272 self.cx.type_kind(fn_ty) == TypeKind::Function,
1273 "builder::{} not passed a function, but {:?}",
1278 let param_tys = self.cx.func_params_types(fn_ty);
1280 let all_args_match = param_tys
1282 .zip(args.iter().map(|&v| self.val_ty(v)))
1283 .all(|(expected_ty, actual_ty)| *expected_ty == actual_ty);
1286 return Cow::Borrowed(args);
1289 let casted_args: Vec<_> = param_tys
1293 .map(|(i, (expected_ty, &actual_val))| {
1294 let actual_ty = self.val_ty(actual_val);
1295 if expected_ty != actual_ty {
1297 "type mismatch in function call of {:?}. \
1298 Expected {:?} for param {}, got {:?}; injecting bitcast",
1299 llfn, expected_ty, i, actual_ty
1301 self.bitcast(actual_val, expected_ty)
1308 Cow::Owned(casted_args)
1311 pub fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value {
1312 unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) }
1315 fn call_lifetime_intrinsic(&mut self, intrinsic: &str, ptr: &'ll Value, size: Size) {
1316 let size = size.bytes();
1321 if !self.cx().sess().emit_lifetime_markers() {
1325 let lifetime_intrinsic = self.cx.get_intrinsic(intrinsic);
1327 let ptr = self.pointercast(ptr, self.cx.type_i8p());
1328 self.call(lifetime_intrinsic, &[self.cx.const_u64(size), ptr], None);
1331 fn phi(&mut self, ty: &'ll Type, vals: &[&'ll Value], bbs: &[&'ll BasicBlock]) -> &'ll Value {
1332 assert_eq!(vals.len(), bbs.len());
1333 let phi = unsafe { llvm::LLVMBuildPhi(self.llbuilder, ty, UNNAMED) };
1335 llvm::LLVMAddIncoming(phi, vals.as_ptr(), bbs.as_ptr(), vals.len() as c_uint);
1340 fn add_incoming_to_phi(&mut self, phi: &'ll Value, val: &'ll Value, bb: &'ll BasicBlock) {
1342 llvm::LLVMAddIncoming(phi, &val, &bb, 1 as c_uint);