rust/src/librustc_trans/trans/builder.rs

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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![allow(dead_code)] // FFI wrappers
use llvm;
use llvm::{CallConv, AtomicBinOp, AtomicOrdering, AsmDialect, AttrBuilder};
use llvm::{Opcode, IntPredicate, RealPredicate, False};
use llvm::{ValueRef, BasicBlockRef, BuilderRef, ModuleRef};
use trans::base;
use trans::common::*;
use trans::machine::llalign_of_pref;
use trans::type_::Type;
use util::nodemap::FnvHashMap;
use libc::{c_uint, c_char};
use std::string::String;
use syntax::codemap::Span;
pub struct Builder<'a, 'tcx: 'a> {
pub llbuilder: BuilderRef,
pub ccx: &'a CrateContext<'a, 'tcx>,
}
// 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.
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pub fn noname() -> *const c_char {
static CNULL: c_char = 0;
&CNULL as *const c_char
}
impl<'a, 'tcx> Builder<'a, 'tcx> {
pub fn new(ccx: &'a CrateContext<'a, 'tcx>) -> Builder<'a, 'tcx> {
Builder {
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llbuilder: ccx.raw_builder(),
ccx: ccx,
}
}
pub fn count_insn(&self, category: &str) {
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if self.ccx.sess().trans_stats() {
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self.ccx.stats().n_llvm_insns.set(self.ccx
.stats()
.n_llvm_insns
.get() + 1);
}
self.ccx.count_llvm_insn();
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if self.ccx.sess().count_llvm_insns() {
base::with_insn_ctxt(|v| {
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let mut h = self.ccx.stats().llvm_insns.borrow_mut();
// Build version of path with cycles removed.
// Pass 1: scan table mapping str -> rightmost pos.
let mut mm = FnvHashMap::new();
let len = v.len();
let mut i = 0u;
while i < len {
mm.insert(v[i], i);
i += 1u;
}
// Pass 2: concat strings for each elt, skipping
// forwards over any cycles by advancing to rightmost
// occurrence of each element in path.
let mut s = String::from_str(".");
i = 0u;
while i < len {
i = mm[v[i]];
s.push('/');
s.push_str(v[i]);
i += 1u;
}
s.push('/');
s.push_str(category);
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let n = match h.get(&s) {
Some(&n) => n,
_ => 0u
};
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h.insert(s, n+1u);
})
}
}
pub fn position_before(&self, insn: ValueRef) {
unsafe {
llvm::LLVMPositionBuilderBefore(self.llbuilder, insn);
}
}
pub fn position_at_end(&self, llbb: BasicBlockRef) {
unsafe {
llvm::LLVMPositionBuilderAtEnd(self.llbuilder, llbb);
}
}
pub fn ret_void(&self) {
self.count_insn("retvoid");
unsafe {
llvm::LLVMBuildRetVoid(self.llbuilder);
}
}
pub fn ret(&self, v: ValueRef) {
self.count_insn("ret");
unsafe {
llvm::LLVMBuildRet(self.llbuilder, v);
}
}
pub fn aggregate_ret(&self, ret_vals: &[ValueRef]) {
unsafe {
llvm::LLVMBuildAggregateRet(self.llbuilder,
ret_vals.as_ptr(),
ret_vals.len() as c_uint);
}
}
pub fn br(&self, dest: BasicBlockRef) {
self.count_insn("br");
unsafe {
llvm::LLVMBuildBr(self.llbuilder, dest);
}
}
pub fn cond_br(&self, cond: ValueRef, then_llbb: BasicBlockRef, else_llbb: BasicBlockRef) {
self.count_insn("condbr");
unsafe {
llvm::LLVMBuildCondBr(self.llbuilder, cond, then_llbb, else_llbb);
}
}
pub fn switch(&self, v: ValueRef, else_llbb: BasicBlockRef, num_cases: uint) -> ValueRef {
unsafe {
llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, num_cases as c_uint)
}
}
pub fn indirect_br(&self, addr: ValueRef, num_dests: uint) {
self.count_insn("indirectbr");
unsafe {
llvm::LLVMBuildIndirectBr(self.llbuilder, addr, num_dests as c_uint);
}
}
pub fn invoke(&self,
llfn: ValueRef,
args: &[ValueRef],
then: BasicBlockRef,
catch: BasicBlockRef,
attributes: Option<AttrBuilder>)
-> ValueRef {
self.count_insn("invoke");
debug!("Invoke {} with args ({})",
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self.ccx.tn().val_to_string(llfn),
args.iter()
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.map(|&v| self.ccx.tn().val_to_string(v))
.collect::<Vec<String>>()
.connect(", "));
unsafe {
let v = llvm::LLVMBuildInvoke(self.llbuilder,
llfn,
args.as_ptr(),
args.len() as c_uint,
then,
catch,
noname());
match attributes {
Some(a) => a.apply_callsite(v),
None => {}
}
v
}
}
pub fn unreachable(&self) {
self.count_insn("unreachable");
unsafe {
llvm::LLVMBuildUnreachable(self.llbuilder);
}
}
/* Arithmetic */
pub fn add(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("add");
unsafe {
llvm::LLVMBuildAdd(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nswadd(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nswadd");
unsafe {
llvm::LLVMBuildNSWAdd(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nuwadd(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nuwadd");
unsafe {
llvm::LLVMBuildNUWAdd(self.llbuilder, lhs, rhs, noname())
}
}
pub fn fadd(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("fadd");
unsafe {
llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, noname())
}
}
pub fn sub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("sub");
unsafe {
llvm::LLVMBuildSub(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nswsub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nwsub");
unsafe {
llvm::LLVMBuildNSWSub(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nuwsub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nuwsub");
unsafe {
llvm::LLVMBuildNUWSub(self.llbuilder, lhs, rhs, noname())
}
}
pub fn fsub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("sub");
unsafe {
llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, noname())
}
}
pub fn mul(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("mul");
unsafe {
llvm::LLVMBuildMul(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nswmul(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nswmul");
unsafe {
llvm::LLVMBuildNSWMul(self.llbuilder, lhs, rhs, noname())
}
}
pub fn nuwmul(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("nuwmul");
unsafe {
llvm::LLVMBuildNUWMul(self.llbuilder, lhs, rhs, noname())
}
}
pub fn fmul(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("fmul");
unsafe {
llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, noname())
}
}
pub fn udiv(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("udiv");
unsafe {
llvm::LLVMBuildUDiv(self.llbuilder, lhs, rhs, noname())
}
}
pub fn sdiv(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("sdiv");
unsafe {
llvm::LLVMBuildSDiv(self.llbuilder, lhs, rhs, noname())
}
}
pub fn exactsdiv(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("exactsdiv");
unsafe {
llvm::LLVMBuildExactSDiv(self.llbuilder, lhs, rhs, noname())
}
}
pub fn fdiv(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("fdiv");
unsafe {
llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, noname())
}
}
pub fn urem(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("urem");
unsafe {
llvm::LLVMBuildURem(self.llbuilder, lhs, rhs, noname())
}
}
pub fn srem(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("srem");
unsafe {
llvm::LLVMBuildSRem(self.llbuilder, lhs, rhs, noname())
}
}
pub fn frem(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("frem");
unsafe {
llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, noname())
}
}
pub fn shl(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("shl");
unsafe {
llvm::LLVMBuildShl(self.llbuilder, lhs, rhs, noname())
}
}
pub fn lshr(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("lshr");
unsafe {
llvm::LLVMBuildLShr(self.llbuilder, lhs, rhs, noname())
}
}
pub fn ashr(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("ashr");
unsafe {
llvm::LLVMBuildAShr(self.llbuilder, lhs, rhs, noname())
}
}
pub fn and(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("and");
unsafe {
llvm::LLVMBuildAnd(self.llbuilder, lhs, rhs, noname())
}
}
pub fn or(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("or");
unsafe {
llvm::LLVMBuildOr(self.llbuilder, lhs, rhs, noname())
}
}
pub fn xor(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("xor");
unsafe {
llvm::LLVMBuildXor(self.llbuilder, lhs, rhs, noname())
}
}
pub fn binop(&self, op: Opcode, lhs: ValueRef, rhs: ValueRef)
-> ValueRef {
self.count_insn("binop");
unsafe {
llvm::LLVMBuildBinOp(self.llbuilder, op, lhs, rhs, noname())
}
}
pub fn neg(&self, v: ValueRef) -> ValueRef {
self.count_insn("neg");
unsafe {
llvm::LLVMBuildNeg(self.llbuilder, v, noname())
}
}
pub fn nswneg(&self, v: ValueRef) -> ValueRef {
self.count_insn("nswneg");
unsafe {
llvm::LLVMBuildNSWNeg(self.llbuilder, v, noname())
}
}
pub fn nuwneg(&self, v: ValueRef) -> ValueRef {
self.count_insn("nuwneg");
unsafe {
llvm::LLVMBuildNUWNeg(self.llbuilder, v, noname())
}
}
pub fn fneg(&self, v: ValueRef) -> ValueRef {
self.count_insn("fneg");
unsafe {
llvm::LLVMBuildFNeg(self.llbuilder, v, noname())
}
}
pub fn not(&self, v: ValueRef) -> ValueRef {
self.count_insn("not");
unsafe {
llvm::LLVMBuildNot(self.llbuilder, v, noname())
}
}
/* Memory */
pub fn malloc(&self, ty: Type) -> ValueRef {
self.count_insn("malloc");
unsafe {
llvm::LLVMBuildMalloc(self.llbuilder, ty.to_ref(), noname())
}
}
pub fn array_malloc(&self, ty: Type, val: ValueRef) -> ValueRef {
self.count_insn("arraymalloc");
unsafe {
llvm::LLVMBuildArrayMalloc(self.llbuilder, ty.to_ref(), val, noname())
}
}
pub fn alloca(&self, ty: Type, name: &str) -> ValueRef {
self.count_insn("alloca");
unsafe {
if name.is_empty() {
llvm::LLVMBuildAlloca(self.llbuilder, ty.to_ref(), noname())
} else {
name.with_c_str(|c| {
llvm::LLVMBuildAlloca(self.llbuilder, ty.to_ref(), c)
})
}
}
}
pub fn array_alloca(&self, ty: Type, val: ValueRef) -> ValueRef {
self.count_insn("arrayalloca");
unsafe {
llvm::LLVMBuildArrayAlloca(self.llbuilder, ty.to_ref(), val, noname())
}
}
pub fn free(&self, ptr: ValueRef) {
self.count_insn("free");
unsafe {
llvm::LLVMBuildFree(self.llbuilder, ptr);
}
}
pub fn load(&self, ptr: ValueRef) -> ValueRef {
self.count_insn("load");
unsafe {
llvm::LLVMBuildLoad(self.llbuilder, ptr, noname())
}
}
pub fn volatile_load(&self, ptr: ValueRef) -> ValueRef {
self.count_insn("load.volatile");
unsafe {
let insn = llvm::LLVMBuildLoad(self.llbuilder, ptr, noname());
llvm::LLVMSetVolatile(insn, llvm::True);
insn
}
}
pub fn atomic_load(&self, ptr: ValueRef, order: AtomicOrdering) -> ValueRef {
self.count_insn("load.atomic");
unsafe {
let ty = Type::from_ref(llvm::LLVMTypeOf(ptr));
let align = llalign_of_pref(self.ccx, ty.element_type());
llvm::LLVMBuildAtomicLoad(self.llbuilder, ptr, noname(), order,
align as c_uint)
}
}
pub fn load_range_assert(&self, ptr: ValueRef, lo: u64,
hi: u64, signed: llvm::Bool) -> ValueRef {
let value = self.load(ptr);
unsafe {
let t = llvm::LLVMGetElementType(llvm::LLVMTypeOf(ptr));
let min = llvm::LLVMConstInt(t, lo, signed);
let max = llvm::LLVMConstInt(t, hi, signed);
let v = [min, max];
llvm::LLVMSetMetadata(value, llvm::MD_range as c_uint,
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llvm::LLVMMDNodeInContext(self.ccx.llcx(),
v.as_ptr(),
v.len() as c_uint));
}
value
}
pub fn store(&self, val: ValueRef, ptr: ValueRef) {
debug!("Store {} -> {}",
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self.ccx.tn().val_to_string(val),
self.ccx.tn().val_to_string(ptr));
assert!(self.llbuilder.is_not_null());
self.count_insn("store");
unsafe {
llvm::LLVMBuildStore(self.llbuilder, val, ptr);
}
}
pub fn volatile_store(&self, val: ValueRef, ptr: ValueRef) {
debug!("Store {} -> {}",
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self.ccx.tn().val_to_string(val),
self.ccx.tn().val_to_string(ptr));
assert!(self.llbuilder.is_not_null());
self.count_insn("store.volatile");
unsafe {
let insn = llvm::LLVMBuildStore(self.llbuilder, val, ptr);
llvm::LLVMSetVolatile(insn, llvm::True);
}
}
pub fn atomic_store(&self, val: ValueRef, ptr: ValueRef, order: AtomicOrdering) {
debug!("Store {} -> {}",
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self.ccx.tn().val_to_string(val),
self.ccx.tn().val_to_string(ptr));
self.count_insn("store.atomic");
unsafe {
let ty = Type::from_ref(llvm::LLVMTypeOf(ptr));
let align = llalign_of_pref(self.ccx, ty.element_type());
llvm::LLVMBuildAtomicStore(self.llbuilder, val, ptr, order, align as c_uint);
}
}
pub fn gep(&self, ptr: ValueRef, indices: &[ValueRef]) -> ValueRef {
self.count_insn("gep");
unsafe {
llvm::LLVMBuildGEP(self.llbuilder, ptr, indices.as_ptr(),
indices.len() as c_uint, noname())
}
}
// Simple wrapper around GEP that takes an array of ints and wraps them
// in C_i32()
#[inline]
pub fn gepi(&self, base: ValueRef, ixs: &[uint]) -> ValueRef {
// Small vector optimization. This should catch 100% of the cases that
// we care about.
if ixs.len() < 16 {
let mut small_vec = [ C_i32(self.ccx, 0), ..16 ];
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for (small_vec_e, &ix) in small_vec.iter_mut().zip(ixs.iter()) {
*small_vec_e = C_i32(self.ccx, ix as i32);
}
self.inbounds_gep(base, small_vec[..ixs.len()])
} else {
let v = ixs.iter().map(|i| C_i32(self.ccx, *i as i32)).collect::<Vec<ValueRef>>();
self.count_insn("gepi");
self.inbounds_gep(base, v.as_slice())
}
}
pub fn inbounds_gep(&self, ptr: ValueRef, indices: &[ValueRef]) -> ValueRef {
self.count_insn("inboundsgep");
unsafe {
llvm::LLVMBuildInBoundsGEP(
self.llbuilder, ptr, indices.as_ptr(), indices.len() as c_uint, noname())
}
}
pub fn struct_gep(&self, ptr: ValueRef, idx: uint) -> ValueRef {
self.count_insn("structgep");
unsafe {
llvm::LLVMBuildStructGEP(self.llbuilder, ptr, idx as c_uint, noname())
}
}
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pub fn global_string(&self, _str: *const c_char) -> ValueRef {
self.count_insn("globalstring");
unsafe {
llvm::LLVMBuildGlobalString(self.llbuilder, _str, noname())
}
}
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pub fn global_string_ptr(&self, _str: *const c_char) -> ValueRef {
self.count_insn("globalstringptr");
unsafe {
llvm::LLVMBuildGlobalStringPtr(self.llbuilder, _str, noname())
}
}
/* Casts */
pub fn trunc(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("trunc");
unsafe {
llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn zext(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("zext");
unsafe {
llvm::LLVMBuildZExt(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn sext(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("sext");
unsafe {
llvm::LLVMBuildSExt(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn fptoui(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("fptoui");
unsafe {
llvm::LLVMBuildFPToUI(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn fptosi(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("fptosi");
unsafe {
llvm::LLVMBuildFPToSI(self.llbuilder, val, dest_ty.to_ref(),noname())
}
}
pub fn uitofp(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("uitofp");
unsafe {
llvm::LLVMBuildUIToFP(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn sitofp(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("sitofp");
unsafe {
llvm::LLVMBuildSIToFP(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn fptrunc(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("fptrunc");
unsafe {
llvm::LLVMBuildFPTrunc(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn fpext(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("fpext");
unsafe {
llvm::LLVMBuildFPExt(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn ptrtoint(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("ptrtoint");
unsafe {
llvm::LLVMBuildPtrToInt(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn inttoptr(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("inttoptr");
unsafe {
llvm::LLVMBuildIntToPtr(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn bitcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("bitcast");
unsafe {
llvm::LLVMBuildBitCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn zext_or_bitcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("zextorbitcast");
unsafe {
llvm::LLVMBuildZExtOrBitCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn sext_or_bitcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("sextorbitcast");
unsafe {
llvm::LLVMBuildSExtOrBitCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn trunc_or_bitcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("truncorbitcast");
unsafe {
llvm::LLVMBuildTruncOrBitCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn cast(&self, op: Opcode, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("cast");
unsafe {
llvm::LLVMBuildCast(self.llbuilder, op, val, dest_ty.to_ref(), noname())
}
}
pub fn pointercast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("pointercast");
unsafe {
llvm::LLVMBuildPointerCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn intcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("intcast");
unsafe {
llvm::LLVMBuildIntCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
pub fn fpcast(&self, val: ValueRef, dest_ty: Type) -> ValueRef {
self.count_insn("fpcast");
unsafe {
llvm::LLVMBuildFPCast(self.llbuilder, val, dest_ty.to_ref(), noname())
}
}
/* Comparisons */
pub fn icmp(&self, op: IntPredicate, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("icmp");
unsafe {
llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, noname())
}
}
pub fn fcmp(&self, op: RealPredicate, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("fcmp");
unsafe {
llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, noname())
}
}
/* Miscellaneous instructions */
pub fn empty_phi(&self, ty: Type) -> ValueRef {
self.count_insn("emptyphi");
unsafe {
llvm::LLVMBuildPhi(self.llbuilder, ty.to_ref(), noname())
}
}
pub fn phi(&self, ty: Type, vals: &[ValueRef], bbs: &[BasicBlockRef]) -> ValueRef {
assert_eq!(vals.len(), bbs.len());
let phi = self.empty_phi(ty);
self.count_insn("addincoming");
unsafe {
llvm::LLVMAddIncoming(phi, vals.as_ptr(),
bbs.as_ptr(),
vals.len() as c_uint);
phi
}
}
pub fn add_span_comment(&self, sp: Span, text: &str) {
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if self.ccx.sess().asm_comments() {
let s = format!("{} ({})",
text,
self.ccx.sess().codemap().span_to_string(sp));
debug!("{}", s.as_slice());
self.add_comment(s.as_slice());
}
}
pub fn add_comment(&self, text: &str) {
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if self.ccx.sess().asm_comments() {
let sanitized = text.replace("$", "");
let comment_text = format!("{} {}", "#",
sanitized.replace("\n", "\n\t# "));
self.count_insn("inlineasm");
let asm = comment_text.with_c_str(|c| {
unsafe {
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llvm::LLVMConstInlineAsm(Type::func(&[], &Type::void(self.ccx)).to_ref(),
c, noname(), False, False)
}
});
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self.call(asm, &[], None);
}
}
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pub fn inline_asm_call(&self, asm: *const c_char, cons: *const c_char,
inputs: &[ValueRef], output: Type,
volatile: bool, alignstack: bool,
dia: AsmDialect) -> ValueRef {
self.count_insn("inlineasm");
let volatile = if volatile { llvm::True }
else { llvm::False };
let alignstack = if alignstack { llvm::True }
else { llvm::False };
let argtys = inputs.iter().map(|v| {
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debug!("Asm Input Type: {}", self.ccx.tn().val_to_string(*v));
val_ty(*v)
}).collect::<Vec<_>>();
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debug!("Asm Output Type: {}", self.ccx.tn().type_to_string(output));
let fty = Type::func(argtys.as_slice(), &output);
unsafe {
let v = llvm::LLVMInlineAsm(
fty.to_ref(), asm, cons, volatile, alignstack, dia as c_uint);
self.call(v, inputs, None)
}
}
pub fn call(&self, llfn: ValueRef, args: &[ValueRef],
attributes: Option<AttrBuilder>) -> ValueRef {
self.count_insn("call");
debug!("Call {} with args ({})",
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self.ccx.tn().val_to_string(llfn),
args.iter()
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.map(|&v| self.ccx.tn().val_to_string(v))
.collect::<Vec<String>>()
.connect(", "));
unsafe {
let v = llvm::LLVMBuildCall(self.llbuilder, llfn, args.as_ptr(),
args.len() as c_uint, noname());
match attributes {
Some(a) => a.apply_callsite(v),
None => {}
}
v
}
}
pub fn call_with_conv(&self, llfn: ValueRef, args: &[ValueRef],
conv: CallConv, attributes: Option<AttrBuilder>) -> ValueRef {
self.count_insn("callwithconv");
let v = self.call(llfn, args, attributes);
llvm::SetInstructionCallConv(v, conv);
v
}
pub fn select(&self, cond: ValueRef, then_val: ValueRef, else_val: ValueRef) -> ValueRef {
self.count_insn("select");
unsafe {
llvm::LLVMBuildSelect(self.llbuilder, cond, then_val, else_val, noname())
}
}
pub fn va_arg(&self, list: ValueRef, ty: Type) -> ValueRef {
self.count_insn("vaarg");
unsafe {
llvm::LLVMBuildVAArg(self.llbuilder, list, ty.to_ref(), noname())
}
}
pub fn extract_element(&self, vec: ValueRef, idx: ValueRef) -> ValueRef {
self.count_insn("extractelement");
unsafe {
llvm::LLVMBuildExtractElement(self.llbuilder, vec, idx, noname())
}
}
pub fn insert_element(&self, vec: ValueRef, elt: ValueRef, idx: ValueRef) -> ValueRef {
self.count_insn("insertelement");
unsafe {
llvm::LLVMBuildInsertElement(self.llbuilder, vec, elt, idx, noname())
}
}
pub fn shuffle_vector(&self, v1: ValueRef, v2: ValueRef, mask: ValueRef) -> ValueRef {
self.count_insn("shufflevector");
unsafe {
llvm::LLVMBuildShuffleVector(self.llbuilder, v1, v2, mask, noname())
}
}
pub fn vector_splat(&self, num_elts: uint, elt: ValueRef) -> ValueRef {
unsafe {
let elt_ty = val_ty(elt);
let undef = llvm::LLVMGetUndef(Type::vector(&elt_ty, num_elts as u64).to_ref());
let vec = self.insert_element(undef, elt, C_i32(self.ccx, 0));
let vec_i32_ty = Type::vector(&Type::i32(self.ccx), num_elts as u64);
self.shuffle_vector(vec, undef, C_null(vec_i32_ty))
}
}
pub fn extract_value(&self, agg_val: ValueRef, idx: uint) -> ValueRef {
self.count_insn("extractvalue");
unsafe {
llvm::LLVMBuildExtractValue(self.llbuilder, agg_val, idx as c_uint, noname())
}
}
pub fn insert_value(&self, agg_val: ValueRef, elt: ValueRef,
idx: uint) -> ValueRef {
self.count_insn("insertvalue");
unsafe {
llvm::LLVMBuildInsertValue(self.llbuilder, agg_val, elt, idx as c_uint,
noname())
}
}
pub fn is_null(&self, val: ValueRef) -> ValueRef {
self.count_insn("isnull");
unsafe {
llvm::LLVMBuildIsNull(self.llbuilder, val, noname())
}
}
pub fn is_not_null(&self, val: ValueRef) -> ValueRef {
self.count_insn("isnotnull");
unsafe {
llvm::LLVMBuildIsNotNull(self.llbuilder, val, noname())
}
}
pub fn ptrdiff(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
self.count_insn("ptrdiff");
unsafe {
llvm::LLVMBuildPtrDiff(self.llbuilder, lhs, rhs, noname())
}
}
pub fn trap(&self) {
unsafe {
let bb: BasicBlockRef = llvm::LLVMGetInsertBlock(self.llbuilder);
let fn_: ValueRef = llvm::LLVMGetBasicBlockParent(bb);
let m: ModuleRef = llvm::LLVMGetGlobalParent(fn_);
let t: ValueRef = "llvm.trap".with_c_str(|buf| {
llvm::LLVMGetNamedFunction(m, buf)
});
assert!((t as int != 0));
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let args: &[ValueRef] = &[];
self.count_insn("trap");
llvm::LLVMBuildCall(
self.llbuilder, t, args.as_ptr(), args.len() as c_uint, noname());
}
}
pub fn landing_pad(&self, ty: Type, pers_fn: ValueRef, num_clauses: uint) -> ValueRef {
self.count_insn("landingpad");
unsafe {
llvm::LLVMBuildLandingPad(
self.llbuilder, ty.to_ref(), pers_fn, num_clauses as c_uint, noname())
}
}
pub fn set_cleanup(&self, landing_pad: ValueRef) {
self.count_insn("setcleanup");
unsafe {
llvm::LLVMSetCleanup(landing_pad, llvm::True);
}
}
pub fn resume(&self, exn: ValueRef) -> ValueRef {
self.count_insn("resume");
unsafe {
llvm::LLVMBuildResume(self.llbuilder, exn)
}
}
// Atomic Operations
pub fn atomic_cmpxchg(&self, dst: ValueRef,
cmp: ValueRef, src: ValueRef,
order: AtomicOrdering,
failure_order: AtomicOrdering) -> ValueRef {
unsafe {
llvm::LLVMBuildAtomicCmpXchg(self.llbuilder, dst, cmp, src,
order, failure_order)
}
}
pub fn atomic_rmw(&self, op: AtomicBinOp,
dst: ValueRef, src: ValueRef,
order: AtomicOrdering) -> ValueRef {
unsafe {
llvm::LLVMBuildAtomicRMW(self.llbuilder, op, dst, src, order, False)
}
}
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pub fn atomic_fence(&self, order: AtomicOrdering) {
unsafe {
llvm::LLVMBuildAtomicFence(self.llbuilder, order);
}
}
}