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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "aot_emit_compare.h"
#include "../aot/aot_intrinsic.h"
static bool
int_cond_to_llvm_op(IntCond cond, LLVMIntPredicate *op)
{
if (cond < INT_EQZ || cond > INT_GE_U)
return false;
switch (cond) {
case INT_EQZ:
case INT_EQ:
*op = LLVMIntEQ;
break;
case INT_NE:
*op = LLVMIntNE;
break;
case INT_LT_S:
*op = LLVMIntSLT;
break;
case INT_LT_U:
*op = LLVMIntULT;
break;
case INT_GT_S:
*op = LLVMIntSGT;
break;
case INT_GT_U:
*op = LLVMIntUGT;
break;
case INT_LE_S:
*op = LLVMIntSLE;
break;
case INT_LE_U:
*op = LLVMIntULE;
break;
case INT_GE_S:
*op = LLVMIntSGE;
break;
case INT_GE_U:
*op = LLVMIntUGE;
break;
default:
return false;
}
return true;
}
static bool
float_cond_to_llvm_op(FloatCond cond, LLVMRealPredicate *op)
{
if (cond < FLOAT_EQ || cond > FLOAT_GE)
return false;
switch (cond) {
case FLOAT_EQ:
*op = LLVMRealOEQ;
break;
case FLOAT_NE:
*op = LLVMRealUNE;
break;
case FLOAT_LT:
*op = LLVMRealOLT;
break;
case FLOAT_GT:
*op = LLVMRealOGT;
break;
case FLOAT_LE:
*op = LLVMRealOLE;
break;
case FLOAT_GE:
*op = LLVMRealOGE;
break;
default:
return false;
}
return true;
}
bool
aot_compile_op_i32_compare(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
IntCond cond)
{
LLVMIntPredicate op;
LLVMValueRef lhs, rhs, res;
if (!int_cond_to_llvm_op(cond, &op)) {
aot_set_last_error("invalid WASM condition opcode");
return false;
}
if (cond == INT_EQZ)
rhs = I32_ZERO;
else
POP_I32(rhs);
POP_I32(lhs);
if (!(res = LLVMBuildICmp(comp_ctx->builder, op, lhs, rhs, "i32_cmp"))) {
aot_set_last_error("llvm build compare failed.");
return false;
}
PUSH_COND(res);
return true;
fail:
return false;
}
bool
aot_compile_op_i64_compare(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
IntCond cond)
{
LLVMIntPredicate op;
LLVMValueRef lhs, rhs, res;
if (!int_cond_to_llvm_op(cond, &op)) {
aot_set_last_error("invalid WASM condition opcode");
return false;
}
if (cond == INT_EQZ)
rhs = I64_CONST(0);
else
POP_I64(rhs);
POP_I64(lhs);
if (!(res = LLVMBuildICmp(comp_ctx->builder, op, lhs, rhs, "i64_cmp"))) {
aot_set_last_error("llvm build compare failed.");
return false;
}
PUSH_COND(res);
return true;
fail:
return false;
}
bool
aot_compile_op_f32_compare(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
FloatCond cond)
{
LLVMRealPredicate op;
LLVMValueRef lhs, rhs, res;
if (!float_cond_to_llvm_op(cond, &op)) {
aot_set_last_error("invalid WASM condition opcode");
return false;
}
POP_F32(rhs);
POP_F32(lhs);
if (comp_ctx->disable_llvm_intrinsics
&& aot_intrinsic_check_capability(comp_ctx, "f32_cmp")) {
LLVMTypeRef param_types[3];
LLVMValueRef opcond = LLVMConstInt(I32_TYPE, cond, true);
param_types[0] = I32_TYPE;
param_types[1] = F32_TYPE;
param_types[2] = F32_TYPE;
res = aot_call_llvm_intrinsic(comp_ctx, func_ctx, "f32_cmp", I32_TYPE,
param_types, 3, opcond, lhs, rhs);
if (!res) {
goto fail;
}
res = LLVMBuildIntCast(comp_ctx->builder, res, INT1_TYPE, "bit_cast");
}
else {
res = LLVMBuildFCmp(comp_ctx->builder, op, lhs, rhs, "f32_cmp");
}
if (!res) {
aot_set_last_error("llvm build compare failed.");
return false;
}
PUSH_COND(res);
return true;
fail:
return false;
}
bool
aot_compile_op_f64_compare(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
FloatCond cond)
{
LLVMRealPredicate op;
LLVMValueRef lhs, rhs, res;
if (!float_cond_to_llvm_op(cond, &op)) {
aot_set_last_error("invalid WASM condition opcode");
return false;
}
POP_F64(rhs);
POP_F64(lhs);
if (comp_ctx->disable_llvm_intrinsics
&& aot_intrinsic_check_capability(comp_ctx, "f64_cmp")) {
LLVMTypeRef param_types[3];
LLVMValueRef opcond = LLVMConstInt(I32_TYPE, cond, true);
param_types[0] = I32_TYPE;
param_types[1] = F64_TYPE;
param_types[2] = F64_TYPE;
res = aot_call_llvm_intrinsic(comp_ctx, func_ctx, "f64_cmp", I32_TYPE,
param_types, 3, opcond, lhs, rhs);
if (!res) {
goto fail;
}
res = LLVMBuildIntCast(comp_ctx->builder, res, INT1_TYPE, "bit_cast");
}
else {
res = LLVMBuildFCmp(comp_ctx->builder, op, lhs, rhs, "f64_cmp");
}
if (!res) {
aot_set_last_error("llvm build compare failed.");
return false;
}
PUSH_COND(res);
return true;
fail:
return false;
}
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