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492 lines
17 KiB
492 lines
17 KiB
/******************************************************************************
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* Copyright (C) 2015-2020 Dibyendu Majumdar
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************************/
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#include "ravi_llvmcodegen.h"
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namespace ravi {
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// R(A+1), ..., R(A+B) := nil
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void RaviCodeGenerator::emit_LOADNIL(RaviFunctionDef *def, int A, int B,
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int pc) {
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emit_debug_trace(def, OP_LOADNIL, pc);
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#if 1
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// Inline version, we unroll the loop
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emit_load_base(def);
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do {
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llvm::Value *dest = emit_gep_register(def, A);
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emit_store_type_(def, dest, LUA_TNIL);
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A++;
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} while (B--);
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#else
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CreateCall3(def->builder, def->raviV_op_loadnilF, def->ci_val,
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llvm::ConstantInt::get(def->types->C_intT, A),
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llvm::ConstantInt::get(def->types->C_intT, B));
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#endif
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}
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// R(A) := tonumber(0)
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void RaviCodeGenerator::emit_LOADFZ(RaviFunctionDef *def, int A, int pc) {
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emit_debug_trace(def, OP_RAVI_LOADFZ, pc);
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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// destvalue->n = 0.0
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emit_store_reg_n_withtype(
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def, llvm::ConstantFP::get(def->types->lua_NumberT, 0.0), dest);
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}
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// R(A) := tointeger(0)
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void RaviCodeGenerator::emit_LOADIZ(RaviFunctionDef *def, int A, int pc) {
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emit_debug_trace(def, OP_RAVI_LOADIZ, pc);
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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// dest->i = 0
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emit_store_reg_i_withtype(def, def->types->kluaInteger[0], dest);
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}
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// R(A) := (Bool)B; if (C) pc++
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void RaviCodeGenerator::emit_LOADBOOL(RaviFunctionDef *def, int A, int B, int C,
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int j, int pc) {
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// setbvalue(ra, GETARG_B(i));
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// if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */
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emit_debug_trace(def, OP_LOADBOOL, pc);
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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// dest->i = 0
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emit_store_reg_b_withtype(def, llvm::ConstantInt::get(def->types->C_intT, B),
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dest);
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if (C) {
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// Skip next instruction if C
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def->builder->CreateBr(def->jmp_targets[j].jmp1);
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llvm::BasicBlock *block =
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llvm::BasicBlock::Create(def->jitState->context(), "nextblock", def->f);
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def->builder->SetInsertPoint(block);
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}
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}
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// R(A) := R(B)
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void RaviCodeGenerator::emit_MOVE(RaviFunctionDef *def, int A, int B, int pc) {
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// setobjs2s(L, ra, RB(i));
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emit_debug_trace(def, OP_MOVE, pc);
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// Load pointer to base
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emit_load_base(def);
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lua_assert(A != B);
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llvm::Value *src = emit_gep_register(def, B);
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llvm::Value *dest = emit_gep_register(def, A);
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emit_assign(def, dest, src);
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}
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// R(A) := R(B), check R(B) is int
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void RaviCodeGenerator::emit_MOVEI(RaviFunctionDef *def, int A, int B, int pc) {
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// TValue *rb = RB(i);
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// lua_Integer j;
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// if (tointeger(rb, &j)) {
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// setivalue(ra, j);
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// }
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// else
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// luaG_runerror(L, "integer expected");
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llvm::IRBuilder<> TmpB(def->entry, def->entry->begin());
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llvm::Value *var = TmpB.CreateAlloca(def->types->lua_IntegerT, nullptr, "i");
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emit_debug_trace(def, OP_RAVI_MOVEI, pc);
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// Load pointer to base
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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llvm::Value *src = emit_gep_register(def, B);
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llvm::Value *src_type = emit_load_type(def, src);
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// Compare src->tt == LUA_TNUMINT
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llvm::Value *cmp1 =
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emit_is_value_of_type(def, src_type, LUA__TNUMINT, "is.src.integer");
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llvm::BasicBlock *then1 =
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llvm::BasicBlock::Create(def->jitState->context(), "if.integer", def->f);
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llvm::BasicBlock *else1 =
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llvm::BasicBlock::Create(def->jitState->context(), "if.not.integer");
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llvm::BasicBlock *end1 =
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llvm::BasicBlock::Create(def->jitState->context(), "done");
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def->builder->CreateCondBr(cmp1, then1, else1);
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def->builder->SetInsertPoint(then1);
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// Already a int - move
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llvm::Instruction *tmp = emit_load_reg_i(def, src);
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emit_store_local_n(def, tmp, var);
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def->builder->CreateBr(end1);
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// we need to convert
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def->f->getBasicBlockList().push_back(else1);
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def->builder->SetInsertPoint(else1);
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// Call luaV_tointeger_()
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llvm::Value *var_isint =
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CreateCall2(def->builder, def->luaV_tointegerF, src, var);
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llvm::Value *tobool = def->builder->CreateICmpEQ(
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var_isint, def->types->kInt[0], "int.conversion.failed");
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// Did conversion fail?
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llvm::BasicBlock *else2 = llvm::BasicBlock::Create(
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def->jitState->context(), "if.conversion.failed", def->f);
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def->builder->CreateCondBr(tobool, else2, end1);
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// Conversion failed, so raise error
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def->builder->SetInsertPoint(else2);
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emit_raise_lua_error(def, "integer expected");
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def->builder->CreateBr(end1);
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// Conversion OK
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def->f->getBasicBlockList().push_back(end1);
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def->builder->SetInsertPoint(end1);
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auto load_var = emit_load_local_n(def, var);
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emit_store_reg_i_withtype(def, load_var, dest);
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}
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void RaviCodeGenerator::emit_MOVEF(RaviFunctionDef *def, int A, int B, int pc) {
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// case OP_RAVI_MOVEF: {
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// TValue *rb = RB(i);
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// lua_Number j;
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// if (tonumber(rb, &j)) {
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// setfltvalue(ra, j);
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// }
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// else
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// luaG_runerror(L, "float expected");
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// } break;
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llvm::IRBuilder<> TmpB(def->entry, def->entry->begin());
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llvm::Value *var = TmpB.CreateAlloca(def->types->lua_NumberT, nullptr, "n");
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emit_debug_trace(def, OP_RAVI_MOVEF, pc);
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// Load pointer to base
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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llvm::Value *src = emit_gep_register(def, B);
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llvm::Value *src_type = emit_load_type(def, src);
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// Compare src->tt == LUA_TNUMFLT
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llvm::Value *cmp1 =
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emit_is_value_of_type(def, src_type, LUA__TNUMFLT, "is.src.float");
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llvm::BasicBlock *then1 =
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llvm::BasicBlock::Create(def->jitState->context(), "if.float", def->f);
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llvm::BasicBlock *else1 =
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llvm::BasicBlock::Create(def->jitState->context(), "if.not.float");
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llvm::BasicBlock *end1 =
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llvm::BasicBlock::Create(def->jitState->context(), "done");
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def->builder->CreateCondBr(cmp1, then1, else1);
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def->builder->SetInsertPoint(then1);
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// Already a float - copy to var
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llvm::Instruction *tmp = emit_load_reg_n(def, src);
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emit_store_local_n(def, tmp, var);
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def->builder->CreateBr(end1);
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// we need to convert
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def->f->getBasicBlockList().push_back(else1);
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def->builder->SetInsertPoint(else1);
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// Call luaV_tonumber()
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llvm::Value *var_isflt =
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CreateCall2(def->builder, def->luaV_tonumberF, src, var);
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llvm::Value *tobool = def->builder->CreateICmpEQ(
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var_isflt, def->types->kInt[0], "float.conversion.failed");
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// Did conversion fail?
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llvm::BasicBlock *else2 = llvm::BasicBlock::Create(
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def->jitState->context(), "if.conversion.failed", def->f);
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def->builder->CreateCondBr(tobool, else2, end1);
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// Conversion failed, so raise error
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def->builder->SetInsertPoint(else2);
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emit_raise_lua_error(def, "number expected");
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def->builder->CreateBr(end1);
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// Conversion OK
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def->f->getBasicBlockList().push_back(end1);
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def->builder->SetInsertPoint(end1);
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// Set R(A)
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auto load_var = emit_load_local_n(def, var);
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emit_store_reg_n_withtype(def, load_var, dest);
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}
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void RaviCodeGenerator::emit_TOSTRING(RaviFunctionDef *def, int A, int pc) {
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emit_debug_trace(def, OP_RAVI_TOSTRING, pc);
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emit_load_base(def);
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llvm::Value *ra = emit_gep_register(def, A);
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llvm::Instruction *type = emit_load_type(def, ra);
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llvm::Value *isnotnil = emit_is_not_value_of_type(def, type, LUA__TNIL);
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// check if string type
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llvm::Value *cmp1 = emit_is_not_value_of_type_class(def, type, LUA_TSTRING);
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cmp1 = def->builder->CreateAnd(isnotnil, cmp1, "OP_RAVI_TOSTRING_is.not.expected.type");
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llvm::BasicBlock *raise_error = llvm::BasicBlock::Create(
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def->jitState->context(), "OP_RAVI_TOSTRING_if.not.expected_type", def->f);
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llvm::BasicBlock *done =
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llvm::BasicBlock::Create(def->jitState->context(), "OP_RAVI_TOSTRING_done");
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auto brinst1 = def->builder->CreateCondBr(cmp1, raise_error, done);
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attach_branch_weights(def, brinst1, 0, 100);
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def->builder->SetInsertPoint(raise_error);
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// Conversion failed, so raise error
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emit_raise_lua_error(def, "string expected");
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def->builder->CreateBr(done);
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def->f->getBasicBlockList().push_back(done);
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def->builder->SetInsertPoint(done);
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}
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void RaviCodeGenerator::emit_TOCLOSURE(RaviFunctionDef *def, int A, int pc) {
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emit_debug_trace(def, OP_RAVI_TOCLOSURE, pc);
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emit_load_base(def);
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llvm::Value *ra = emit_gep_register(def, A);
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llvm::Instruction *type = emit_load_type(def, ra);
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llvm::Value *isnotnil = emit_is_not_value_of_type(def, type, LUA__TNIL);
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// check if function type
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llvm::Value *cmp1 = emit_is_not_value_of_type_class(
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def, type, LUA_TFUNCTION);
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cmp1 = def->builder->CreateAnd(isnotnil, cmp1, "OP_RAVI_TOCLOSURE_is.not.expected.type");
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llvm::BasicBlock *raise_error = llvm::BasicBlock::Create(
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def->jitState->context(), "OP_RAVI_TOCLOSURE_if.not.expected_type",
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def->f);
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llvm::BasicBlock *done = llvm::BasicBlock::Create(def->jitState->context(),
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"OP_RAVI_TOCLOSURE_done");
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auto brinst1 = def->builder->CreateCondBr(cmp1, raise_error, done);
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attach_branch_weights(def, brinst1, 0, 100);
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def->builder->SetInsertPoint(raise_error);
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// Conversion failed, so raise error
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emit_raise_lua_error(def, "closure expected");
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def->builder->CreateBr(done);
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def->f->getBasicBlockList().push_back(done);
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def->builder->SetInsertPoint(done);
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}
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void RaviCodeGenerator::emit_TOTYPE(RaviFunctionDef *def, int A, int Bx,
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int pc) {
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emit_debug_trace(def, OP_RAVI_TOTYPE, pc);
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// Load pointer to base
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emit_load_base(def);
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llvm::Value *ra = emit_gep_register(def, A);
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llvm::Value *rb = emit_gep_constant(def, Bx);
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CreateCall3(def->builder, def->raviV_op_totypeF, def->L, ra, rb);
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}
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void RaviCodeGenerator::emit_TOINT(RaviFunctionDef *def, int A, int pc) {
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// case OP_RAVI_TOINT: {
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// lua_Integer j;
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// if (tointeger(ra, &j)) {
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// setivalue(ra, j);
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// }
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// else
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// luaG_runerror(L, "integer expected");
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// } break;
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llvm::IRBuilder<> TmpB(def->entry, def->entry->begin());
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llvm::Value *var = TmpB.CreateAlloca(def->types->lua_IntegerT, nullptr, "i");
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emit_debug_trace(def, OP_RAVI_TOINT, pc);
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// Load pointer to base
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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llvm::Value *src = dest;
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llvm::Value *src_type = emit_load_type(def, src);
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// Is src->tt != LUA_TNUMINT?
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llvm::Value *cmp1 =
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emit_is_not_value_of_type(def, src_type, LUA__TNUMINT, "is.not.integer");
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llvm::BasicBlock *then1 = llvm::BasicBlock::Create(def->jitState->context(),
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"if.not.integer", def->f);
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llvm::BasicBlock *end1 =
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llvm::BasicBlock::Create(def->jitState->context(), "done");
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def->builder->CreateCondBr(cmp1, then1, end1);
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def->builder->SetInsertPoint(then1);
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// Call luaV_tointeger_()
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llvm::Value *var_isint =
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CreateCall2(def->builder, def->luaV_tointegerF, src, var);
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llvm::Value *tobool = def->builder->CreateICmpEQ(
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var_isint, def->types->kInt[0], "int.conversion.failed");
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// Did conversion fail?
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llvm::BasicBlock *then2 = llvm::BasicBlock::Create(
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def->jitState->context(), "if.conversion.failed", def->f);
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llvm::BasicBlock *else2 =
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llvm::BasicBlock::Create(def->jitState->context(), "conversion.ok");
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def->builder->CreateCondBr(tobool, then2, else2);
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def->builder->SetInsertPoint(then2);
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// Conversion failed, so raise error
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emit_raise_lua_error(def, "integer expected");
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def->builder->CreateBr(else2);
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// Conversion OK
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def->f->getBasicBlockList().push_back(else2);
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def->builder->SetInsertPoint(else2);
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auto load_var = emit_load_local_n(def, var);
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emit_store_reg_i_withtype(def, load_var, dest);
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def->builder->CreateBr(end1);
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def->f->getBasicBlockList().push_back(end1);
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def->builder->SetInsertPoint(end1);
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}
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void RaviCodeGenerator::emit_TOFLT(RaviFunctionDef *def, int A, int pc) {
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// case OP_RAVI_TOFLT: {
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// lua_Number j;
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// if (tonumber(ra, &j)) {
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// setfltvalue(ra, j);
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// }
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// else
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// luaG_runerror(L, "float expected");
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// } break;
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llvm::IRBuilder<> TmpB(def->entry, def->entry->begin());
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llvm::Value *var = TmpB.CreateAlloca(def->types->lua_NumberT, nullptr, "n");
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emit_debug_trace(def, OP_RAVI_TOFLT, pc);
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// Load pointer to base
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emit_load_base(def);
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llvm::Value *dest = emit_gep_register(def, A);
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llvm::Value *src = dest;
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llvm::Value *src_type = emit_load_type(def, src);
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// Is src->tt != LUA_TNUMFLT?
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llvm::Value *cmp1 =
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emit_is_not_value_of_type(def, src_type, LUA__TNUMFLT, "is.not.float");
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llvm::BasicBlock *then1 = llvm::BasicBlock::Create(def->jitState->context(),
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"if.not.float", def->f);
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llvm::BasicBlock *end1 =
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llvm::BasicBlock::Create(def->jitState->context(), "done");
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def->builder->CreateCondBr(cmp1, then1, end1);
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def->builder->SetInsertPoint(then1);
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// Call luaV_tonumber()
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llvm::Value *var_isflt =
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CreateCall2(def->builder, def->luaV_tonumberF, src, var);
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llvm::Value *tobool = def->builder->CreateICmpEQ(
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var_isflt, def->types->kInt[0], "float.conversion.failed");
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// Did conversion fail?
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llvm::BasicBlock *then2 = llvm::BasicBlock::Create(
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def->jitState->context(), "if.conversion.failed", def->f);
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llvm::BasicBlock *else2 =
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llvm::BasicBlock::Create(def->jitState->context(), "conversion.ok");
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def->builder->CreateCondBr(tobool, then2, else2);
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def->builder->SetInsertPoint(then2);
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// Conversion failed, so raise error
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emit_raise_lua_error(def, "number expected");
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def->builder->CreateBr(else2);
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// Conversion OK
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def->f->getBasicBlockList().push_back(else2);
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def->builder->SetInsertPoint(else2);
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auto load_var = emit_load_local_n(def, var);
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emit_store_reg_n_withtype(def, load_var, dest);
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def->builder->CreateBr(end1);
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def->f->getBasicBlockList().push_back(end1);
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def->builder->SetInsertPoint(end1);
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}
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void RaviCodeGenerator::emit_LOADK(RaviFunctionDef *def, int A, int Bx,
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int pc) {
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// TValue *rb = k + GETARG_Bx(i);
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// setobj2s(L, ra, rb);
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emit_debug_trace(def, OP_LOADK, pc);
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// Load pointer to base
|
|
emit_load_base(def);
|
|
|
|
// LOADK requires a structure assignment
|
|
// in LLVM as far as I can tell this requires a call to
|
|
// an intrinsic memcpy
|
|
llvm::Value *dest = emit_gep_register(def, A);
|
|
|
|
TValue *Konst = &def->p->k[Bx];
|
|
switch (Konst->tt_) {
|
|
case LUA_TNUMINT:
|
|
emit_store_reg_i_withtype(
|
|
def,
|
|
llvm::ConstantInt::get(def->types->lua_IntegerT, Konst->value_.i),
|
|
dest);
|
|
break;
|
|
case LUA_TNUMFLT:
|
|
emit_store_reg_n_withtype(
|
|
def, llvm::ConstantFP::get(def->types->lua_NumberT, Konst->value_.n),
|
|
dest);
|
|
break;
|
|
case LUA_TBOOLEAN:
|
|
emit_store_reg_b_withtype(
|
|
def, llvm::ConstantInt::get(def->types->C_intT, Konst->value_.b),
|
|
dest);
|
|
break;
|
|
default: {
|
|
// rb
|
|
llvm::Value *src = emit_gep_constant(def, Bx);
|
|
|
|
// *ra = *rb
|
|
emit_assign(def, dest, src);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RaviCodeGenerator::emit_assign(RaviFunctionDef *def, llvm::Value *dest,
|
|
llvm::Value *src) {
|
|
// Below is more efficient that memcpy()
|
|
// destvalue->value->i = srcvalue->value->i;
|
|
// destvalue->value->tt = srcvalue->value->tt;
|
|
llvm::Value *srcvalue = emit_gep(def, "srcvalue", src, 0, 0, 0);
|
|
llvm::Value *destvalue = emit_gep(def, "destvalue", dest, 0, 0, 0);
|
|
llvm::Instruction *load = def->builder->CreateLoad(srcvalue);
|
|
load->setMetadata(llvm::LLVMContext::MD_tbaa, def->types->tbaa_TValue_nT);
|
|
llvm::Instruction *store = def->builder->CreateStore(load, destvalue);
|
|
store->setMetadata(llvm::LLVMContext::MD_tbaa, def->types->tbaa_TValue_nT);
|
|
|
|
// destvalue->type = srcvalue->type
|
|
llvm::Value *srctype = emit_gep(def, "srctype", src, 0, 1);
|
|
llvm::Value *desttype = emit_gep(def, "desttype", dest, 0, 1);
|
|
load = def->builder->CreateLoad(srctype);
|
|
load->setMetadata(llvm::LLVMContext::MD_tbaa, def->types->tbaa_TValue_ttT);
|
|
store = def->builder->CreateStore(load, desttype);
|
|
store->setMetadata(llvm::LLVMContext::MD_tbaa, def->types->tbaa_TValue_ttT);
|
|
}
|
|
} |