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ir_load_llvm.c
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ir_load_llvm.c
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/*
* IR - Lightweight JIT Compilation Framework
* (LLVM loader)
* Copyright (C) 2022 Zend by Perforce.
* Authors: Dmitry Stogov <[email protected]>
*/
#include "ir.h"
#include "ir_builder.h"
#include "ir_private.h"
#include <llvm-c/Core.h>
#include <llvm-c/Target.h>
#include <llvm-c/BitReader.h>
#include <llvm-c/IRReader.h>
// The numbers from <LLVM/IR/Attributes.inc>
#define LLVMAttrAlwaysInline 3
#define LLVMAttrInlineHint 12
#define LLVMAttrNoInline 26
#define LLVM2IR_INLINE_MAX_HINT_BLOCKS 10
#define LLVM2IR_INLINE_MAX_HINT_COST 50
#define LLVM2IR_INLINE_MAX_BLOCKS 5
#define LLVM2IR_INLINE_MAX_COST 30
#define IR_BAD_TYPE IR_LAST_TYPE
#define BUILTIN_FUNC_1(name, ret_type, arg1_type) \
ir_const_func(ctx, \
ir_strl(ctx, name, strlen(name)), \
ir_proto_1(ctx, IR_BUILTIN_FUNC, ret_type, arg1_type))
#define BUILTIN_FUNC_2(name, ret_type, arg1_type, arg2_type) \
ir_const_func(ctx, \
ir_strl(ctx, name, strlen(name)), \
ir_proto_2(ctx, IR_BUILTIN_FUNC, ret_type, arg1_type, arg2_type))
#define BUILTIN_FUNC_3(name, ret_type, arg1_type, arg2_type, arg3_type) \
ir_const_func(ctx, \
ir_strl(ctx, name, strlen(name)), \
ir_proto_3(ctx, IR_BUILTIN_FUNC, ret_type, arg1_type, arg2_type, arg3_type))
static ir_ref llvm2ir_const_expr(ir_ctx *ctx, LLVMValueRef expr);
static ir_ref llvm2ir_auto_cast(ir_ctx *ctx, ir_ref ref, ir_type src_type, ir_type type);
static int llvm2ir_func_ex(ir_ctx *ctx, LLVMValueRef func, LLVMModuleRef module, LLVMValueRef root_func);
static ir_type llvm2ir_type(LLVMTypeRef type)
{
char *str;
uint32_t width;
switch (LLVMGetTypeKind(type)) {
case LLVMVoidTypeKind:
return IR_VOID;
case LLVMIntegerTypeKind:
width = LLVMGetIntTypeWidth(type);
if (width == 1) {
return IR_BOOL;
} else if (width <= 8) {
return IR_I8;
} else if (width <= 16) {
return IR_I16;
} else if (width <= 32) {
return IR_I32;
} else if (width <= 64) {
return IR_I64;
}
break;
case LLVMFloatTypeKind:
return IR_FLOAT;
#if 0
case LLVMX86_FP80TypeKind:
// TODO: IR doesn't support "long double". Fallback to "double" ???
IR_FALLTHROUGH;
#endif
case LLVMDoubleTypeKind:
return IR_DOUBLE;
case LLVMPointerTypeKind:
case LLVMFunctionTypeKind:
case LLVMLabelTypeKind:
return IR_ADDR;
case LLVMVectorTypeKind:
IR_ASSERT(0 && "NIY LLVMVectorTypeKind use -fno-vectorize -fno-slp-vectorize");
default:
break;
}
str = LLVMPrintTypeToString(type);
fprintf(stderr, "Unsupported LLVM type: %s\n", str);
IR_ASSERT(0);
LLVMDisposeMessage(str);
return IR_BAD_TYPE;
}
static ir_type llvm2ir_unsigned_type(ir_type type)
{
if (IR_IS_TYPE_SIGNED(type)) {
IR_ASSERT(type >= IR_I8 && type <= IR_I64);
type = type - (IR_I8 - IR_U8);
}
return type;
}
static ir_type llvm2ir_signed_type(ir_type type)
{
if (!IR_IS_TYPE_SIGNED(type)) {
IR_ASSERT(type >= IR_U8 && type <= IR_U64);
type = type + (IR_I8 - IR_U8);
}
return type;
}
static const char *llvm2ir_sym_name(char *buf, const char *name, size_t name_len)
{
size_t i;
char c;
if (name_len > 255) {
return NULL;
}
for (i = 0; i < name_len; i++) {
c = name[i];
if (!(c >= 'a' && c <= 'z')
&& !(c >= 'A' && c <= 'Z')
&& !(c >= '0' && c <= '9')
&& c != '_') {
c = '_';
}
buf[i] = c;
}
buf[i] = 0;
return buf;
}
static ir_ref llvm2ir_proto(ir_ctx *ctx, uint32_t cconv, LLVMTypeRef ftype)
{
uint8_t flags = 0;
ir_type ret_type;
uint8_t *arg_types;
uint32_t i, num_args;
LLVMTypeRef *types;
if (cconv == LLVMCCallConv || cconv == LLVMFastCallConv) {
/* skip */
} else if (cconv == LLVMX86FastcallCallConv) {
flags |= IR_FASTCALL_FUNC;
} else {
fprintf(stderr, "Unsupported Calling Convention: %d\n", cconv);
IR_ASSERT(0);
return 0;
}
if (LLVMIsFunctionVarArg(ftype)) {
flags |= IR_VARARG_FUNC;
}
ret_type = llvm2ir_type(LLVMGetReturnType(ftype));
num_args = LLVMCountParamTypes(ftype);
types = alloca(sizeof(LLVMTypeRef) * num_args);
arg_types = alloca(num_args);
LLVMGetParamTypes(ftype, types);
for (i = 0; i < num_args; i++) {
arg_types[i] = llvm2ir_type(types[i]);
}
return ir_proto(ctx, flags, ret_type, num_args, arg_types);
}
static bool llvm2ir_is_static(LLVMValueRef op)
{
switch (LLVMGetLinkage(op)) {
case LLVMInternalLinkage:
case LLVMPrivateLinkage:
return 1;
default:
return 0;
}
}
static ir_ref llvm2ir_op(ir_ctx *ctx, LLVMValueRef op, ir_type type)
{
ir_ref ref;
LLVMBool lose;
const char *name;
size_t name_len;
ir_ref proto;
ir_val val;
char buf[256];
LLVMValueKind kind = LLVMGetValueKind(op);
switch (kind) {
case LLVMConstantIntValueKind:
IR_ASSERT(IR_IS_TYPE_INT(type));
if (IR_IS_TYPE_SIGNED(type)) {
val.i64 = LLVMConstIntGetSExtValue(op);
} else {
val.i64 = LLVMConstIntGetZExtValue(op);
}
return ir_const(ctx, val, type);
case LLVMConstantFPValueKind:
if (type == IR_DOUBLE) {
val.d = LLVMConstRealGetDouble(op, &lose);
} else {
val.f = (float)LLVMConstRealGetDouble(op, &lose);
val.u32_hi = 0;
}
return ir_const(ctx, val, type);
case LLVMConstantPointerNullValueKind:
return IR_NULL;
case LLVMConstantExprValueKind:
ref = llvm2ir_const_expr(ctx, op);
if (ctx->ir_base[ref].type != type) {
ref = llvm2ir_auto_cast(ctx, ref, ctx->ir_base[ref].type, type);
}
return ref;
case LLVMArgumentValueKind:
case LLVMInstructionValueKind:
ref = ir_addrtab_find(ctx->binding, (uintptr_t)op);
IR_ASSERT(ref != (ir_ref)IR_INVALID_VAL);
if (ctx->ir_base[ref].op == IR_VAR) {
return ir_VADDR(ref);
} else if (ctx->ir_base[ref].type != type) {
ref = llvm2ir_auto_cast(ctx, ref, ctx->ir_base[ref].type, type);
}
return ref;
case LLVMGlobalVariableValueKind:
// TODO: resolve variable address
name = LLVMGetValueName2(op, &name_len);
if (llvm2ir_is_static(op)) {
name = llvm2ir_sym_name(buf, name, name_len);
if (!name) {
return 0;
}
}
return ir_const_sym(ctx, ir_strl(ctx, name, name_len));
case LLVMFunctionValueKind:
// TODO: resolve function address
proto = llvm2ir_proto(ctx, LLVMGetFunctionCallConv(op), LLVMGlobalGetValueType(op));
name = LLVMGetValueName2(op, &name_len);
if (llvm2ir_is_static(op)) {
name = llvm2ir_sym_name(buf, name, name_len);
if (!name) {
return 0;
}
}
return ir_const_func(ctx, ir_strl(ctx, name, name_len), proto);
case LLVMUndefValueValueKind:
case LLVMPoisonValueValueKind:
// TODO: ???
val.u64 = 0;
return ir_const(ctx, val, type);
default:
fprintf(stderr, "Unsupported LLVM value kind: %d\n", kind);
IR_ASSERT(0);
return 0;
}
return 0;
}
static ir_ref llvm2ir_retval(ir_ctx *ctx, LLVMValueRef insn)
{
if (LLVMGetNumOperands(insn) == 0) {
return IR_UNUSED;
} else {
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
return llvm2ir_op(ctx, op0, type);
}
}
static void llvm2ir_ret(ir_ctx *ctx, LLVMValueRef insn)
{
ir_RETURN(llvm2ir_retval(ctx, insn));
}
static ir_ref llvm2ir_jmp(ir_ctx *ctx, LLVMValueRef insn)
{
ir_ref ref;
ref = ir_END(); /* END may be converted to LOOP_END later */
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
return ref;
}
static ir_ref llvm2ir_if(ir_ctx *ctx, LLVMValueRef insn)
{
ir_ref ref;
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
ref = ir_IF(llvm2ir_op(ctx, op0, type));
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
return ref;
}
static ir_ref llvm2ir_switch(ir_ctx *ctx, LLVMValueRef insn)
{
ir_ref ref;
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
ref = ir_SWITCH(llvm2ir_op(ctx, op0, type));
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
return ref;
}
static ir_ref llvm2ir_unary_op(ir_ctx *ctx, LLVMValueRef expr, ir_op op)
{
LLVMValueRef op0 = LLVMGetOperand(expr, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(expr));
ir_ref ref;
ref = ir_fold1(ctx, IR_OPT(op, type), llvm2ir_op(ctx, op0, type));
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_binary_expr(ir_ctx *ctx, ir_op op, ir_type type, LLVMValueRef expr)
{
return ir_fold2(ctx, IR_OPT(op, type),
llvm2ir_op(ctx, LLVMGetOperand(expr, 0), type),
llvm2ir_op(ctx, LLVMGetOperand(expr, 1), type));
}
static ir_ref llvm2ir_binary_op(ir_ctx *ctx, LLVMOpcode opcode, LLVMValueRef expr, ir_op op)
{
ir_type type = llvm2ir_type(LLVMTypeOf(expr));
ir_ref ref;
if (opcode == LLVMUDiv || opcode == LLVMURem) {
type = llvm2ir_unsigned_type(type);
} else if (opcode == LLVMSDiv || opcode == LLVMSRem) {
type = llvm2ir_signed_type(type);
}
ref = llvm2ir_binary_expr(ctx, op, type, expr);
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_cast_op(ir_ctx *ctx, LLVMValueRef expr, ir_op op, LLVMOpcode opcode)
{
LLVMValueRef op0 = LLVMGetOperand(expr, 0);
ir_type src_type, dst_type;
ir_ref ref;
src_type = llvm2ir_type(LLVMTypeOf(op0));
dst_type = llvm2ir_type(LLVMTypeOf(expr));
if (op == IR_ZEXT) {
if (src_type == IR_BOOL && (dst_type == IR_I8 || dst_type == IR_U8)) {
op = IR_BITCAST;
} else if (ir_type_size[src_type] == ir_type_size[dst_type]) {
// TODO: may be we need to reset high bits ???
op = IR_BITCAST;
}
} else if (op == IR_SEXT) {
if (src_type == IR_BOOL) {
ref = llvm2ir_op(ctx, op0, src_type);
if (ir_type_size[dst_type] > 1) {
ref = ir_fold1(ctx, IR_OPT(IR_ZEXT, dst_type), ref);
} else {
ref = ir_fold1(ctx, IR_OPT(IR_BITCAST, dst_type), ref);
}
ref = ir_fold1(ctx, IR_OPT(IR_NEG, dst_type), ref);
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
} else if (op == IR_TRUNC) {
if (ir_type_size[src_type] == ir_type_size[dst_type]) {
// TODO: may be we need to reset high bits ???
op = IR_BITCAST;
}
} else if (op == IR_BITCAST && ir_type_size[src_type] != ir_type_size[dst_type]) {
op = (ir_type_size[src_type] < ir_type_size[dst_type]) ? IR_ZEXT : IR_TRUNC;
} else if (op == IR_INT2FP && opcode == LLVMUIToFP) {
src_type = llvm2ir_unsigned_type(src_type);
}
ref = llvm2ir_op(ctx, op0, src_type);
ref = ir_fold1(ctx, IR_OPT(op, dst_type), ref);
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_icmp_op(ir_ctx *ctx, LLVMValueRef expr)
{
LLVMValueRef op0 = LLVMGetOperand(expr, 0);
LLVMValueRef op1 = LLVMGetOperand(expr, 1);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
ir_ref ref;
ir_op op;
switch (LLVMGetICmpPredicate(expr)) {
case LLVMIntEQ: op = IR_EQ; break;
case LLVMIntNE: op = IR_NE; break;
case LLVMIntUGT: op = IR_UGT; break;
case LLVMIntUGE: op = IR_UGE; break;
case LLVMIntULT: op = IR_ULT; break;
case LLVMIntULE: op = IR_ULE; break;
case LLVMIntSGT: op = IR_GT; break;
case LLVMIntSGE: op = IR_GE; break;
case LLVMIntSLT: op = IR_LT; break;
case LLVMIntSLE: op = IR_LE; break;
default: IR_ASSERT(0); return 0;
}
ref = ir_fold2(ctx, IR_OPT(op, IR_BOOL), llvm2ir_op(ctx, op0, type), llvm2ir_op(ctx, op1, type));
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_fcmp_op_isnan(ir_ctx *ctx, LLVMValueRef expr, ir_type type,
LLVMRealPredicate predicate, LLVMValueRef op0, LLVMValueRef op1)
{
ir_ref func, ref;
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("isnan", IR_BOOL, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("isnanf", IR_BOOL, IR_FLOAT);
}
if (LLVMGetValueKind(op0) == LLVMConstantFPValueKind) {
ref = ir_CALL_1(IR_BOOL, func, llvm2ir_op(ctx, op1, type));
} else if (LLVMGetValueKind(op1) == LLVMConstantFPValueKind) {
ref = ir_CALL_1(IR_BOOL, func, llvm2ir_op(ctx, op0, type));
} else {
ref = ir_OR_B(
ir_CALL_1(IR_BOOL, func, llvm2ir_op(ctx, op0, type)),
ir_CALL_1(IR_BOOL, func, llvm2ir_op(ctx, op1, type)));
}
if (predicate == LLVMRealORD) {
ref = ir_NOT_B(ref);
}
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_fcmp_op(ir_ctx *ctx, LLVMValueRef expr)
{
LLVMValueRef op0 = LLVMGetOperand(expr, 0);
LLVMValueRef op1 = LLVMGetOperand(expr, 1);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
ir_ref ref;
ir_op op;
LLVMRealPredicate predicate = LLVMGetFCmpPredicate(expr);
switch (predicate) {
case LLVMRealOEQ:
case LLVMRealUEQ: op = IR_EQ; break;
case LLVMRealONE:
case LLVMRealUNE: op = IR_NE; break;
case LLVMRealUGT: op = IR_UGT; break;
case LLVMRealUGE: op = IR_UGE; break;
case LLVMRealULT: op = IR_ULT; break;
case LLVMRealULE: op = IR_ULE; break;
case LLVMRealOGT: op = IR_GT; break;
case LLVMRealOGE: op = IR_GE; break;
case LLVMRealOLT: op = IR_LT; break;
case LLVMRealOLE: op = IR_LE; break;
case LLVMRealUNO:
case LLVMRealORD:
return llvm2ir_fcmp_op_isnan(ctx, expr, type, predicate, op0, op1);
default: IR_ASSERT(0); return 0;
}
ref = ir_fold2(ctx, IR_OPT(op, IR_BOOL), llvm2ir_op(ctx, op0, type), llvm2ir_op(ctx, op1, type));
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static ir_ref llvm2ir_cond_op(ir_ctx *ctx, LLVMValueRef expr)
{
LLVMValueRef op0 = LLVMGetOperand(expr, 0);
LLVMValueRef op1 = LLVMGetOperand(expr, 1);
LLVMValueRef op2 = LLVMGetOperand(expr, 2);
ir_type type = llvm2ir_type(LLVMTypeOf(expr));
ir_ref ref;
ref = ir_fold3(ctx, IR_OPT(IR_COND, type), llvm2ir_op(ctx, op0, IR_BOOL), llvm2ir_op(ctx, op1, type), llvm2ir_op(ctx, op2, type));
ir_addrtab_set(ctx->binding, (uintptr_t)expr, ref);
return ref;
}
static void llvm2ir_alloca(ir_ctx *ctx, LLVMValueRef insn)
{
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_ref ref;
if (LLVMGetValueKind(op0) == LLVMConstantIntValueKind
&& LLVMConstIntGetZExtValue(op0) == 1) {
LLVMTypeKind type_kind = LLVMGetTypeKind(LLVMGetAllocatedType(insn));
if (type_kind == LLVMIntegerTypeKind
|| type_kind == LLVMFloatTypeKind
|| type_kind == LLVMDoubleTypeKind
|| type_kind == LLVMPointerTypeKind
|| type_kind == LLVMFunctionTypeKind
|| type_kind == LLVMLabelTypeKind) {
ir_type type = llvm2ir_type(LLVMGetAllocatedType(insn));
size_t name_len;
const char *name = LLVMGetValueName2(insn, &name_len);
char buf[32];
if (!name || !name_len) {
snprintf(buf, sizeof(buf), "var_%d", ctx->insns_count);
name = buf;
}
ref = ir_VAR(type, name);
} else {
ref = ir_ALLOCA(ir_MUL_I32(llvm2ir_op(ctx, op0, IR_I32),
ir_const_i32(ctx, LLVMABISizeOfType((LLVMTargetDataRef)ctx->rules, LLVMGetAllocatedType(insn)))));
ctx->flags2 |= IR_HAS_ALLOCA;
}
} else {
ref = ir_ALLOCA(ir_MUL_I32(llvm2ir_op(ctx, op0, IR_I32),
ir_const_i32(ctx, LLVMABISizeOfType((LLVMTargetDataRef)ctx->rules, LLVMGetAllocatedType(insn)))));
ctx->flags2 |= IR_HAS_ALLOCA;
}
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
}
static void llvm2ir_load(ir_ctx *ctx, LLVMValueRef insn)
{
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(insn));
ir_ref ref;
if (LLVMGetValueKind(op0) == LLVMInstructionValueKind) {
ref = ir_addrtab_find(ctx->binding, (uintptr_t)op0);
if (ctx->ir_base[ref].op == IR_VAR) {
ref = ir_VLOAD(type, ref);
} else {
if (ctx->ir_base[ref].type != IR_ADDR) {
ref = llvm2ir_auto_cast(ctx, ref, ctx->ir_base[ref].type, IR_ADDR);
}
ref = ir_LOAD(type, ref);
}
} else {
ref = llvm2ir_op(ctx, op0, IR_ADDR);
ref = ir_LOAD(type, ref);
}
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
}
static void llvm2ir_store(ir_ctx *ctx, LLVMValueRef insn)
{
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
LLVMValueRef op1 = LLVMGetOperand(insn, 1);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
ir_ref ref, val;
val = llvm2ir_op(ctx, op0, type);
if (LLVMGetValueKind(op1) == LLVMInstructionValueKind) {
ref = ir_addrtab_find(ctx->binding, (uintptr_t)op1);
if (ctx->ir_base[ref].op == IR_VAR) {
ir_VSTORE(ref, val);
} else {
if (ctx->ir_base[ref].type != IR_ADDR) {
ref = llvm2ir_auto_cast(ctx, ref, ctx->ir_base[ref].type, IR_ADDR);
}
ir_STORE(ref, val);
}
} else {
ref = llvm2ir_op(ctx, op1, IR_ADDR);
ir_STORE(ref, val);
}
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ctx->control);
}
static ir_type llvm2ir_overflow_type(LLVMTypeRef stype)
{
ir_type type;
IR_ASSERT(LLVMGetTypeKind(stype) == LLVMStructTypeKind);
IR_ASSERT(LLVMCountStructElementTypes(stype) == 2);
IR_ASSERT(llvm2ir_type(LLVMStructGetTypeAtIndex(stype, 1)) == IR_BOOL);
stype = LLVMStructGetTypeAtIndex(stype, 0);
type = llvm2ir_type(stype);
IR_ASSERT(IR_IS_TYPE_INT(type));
return type;
}
static void llvm2ir_va_arg(ir_ctx *ctx, LLVMValueRef insn)
{
ir_type type = llvm2ir_type(LLVMTypeOf(insn));
ir_ref ref = ir_VA_ARG(type, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
ir_addrtab_set(ctx->binding, (uintptr_t)insn, ref);
}
#define STR_START(name, name_len, str) (name_len >= strlen(str) && memcmp(name, str, strlen(str)) == 0)
#define STR_EQUAL(name, name_len, str) (name_len == strlen(str) && memcmp(name, str, strlen(str)) == 0)
static ir_ref llvm2ir_intrinsic(ir_ctx *ctx, LLVMValueRef insn, LLVMTypeRef ftype, uint32_t count, const char *name, size_t name_len)
{
ir_type type;
ir_ref func;
if (STR_START(name, name_len, "llvm.lifetime.")) {
/* skip */
return IR_NULL;
} else if (STR_START(name, name_len, "llvm.dbg.")) {
/* skip */
return IR_NULL;
} else if (STR_EQUAL(name, name_len, "llvm.experimental.noalias.scope.decl")) {
/* skip */
return IR_NULL;
} else if (STR_EQUAL(name, name_len, "llvm.assume")) {
/* skip */
return IR_NULL;
} else if (STR_START(name, name_len, "llvm.smax.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_signed_type(type);
return llvm2ir_binary_expr(ctx, IR_MAX, type, insn);
} else if (STR_START(name, name_len, "llvm.umax.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_unsigned_type(type);
return llvm2ir_binary_expr(ctx, IR_MAX, type, insn);
} else if (STR_START(name, name_len, "llvm.maxnum.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
return llvm2ir_binary_expr(ctx, IR_MAX, type, insn);
} else if (STR_START(name, name_len, "llvm.smin.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_signed_type(type);
return llvm2ir_binary_expr(ctx, IR_MIN, type, insn);
} else if (STR_START(name, name_len, "llvm.umin.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_unsigned_type(type);
return llvm2ir_binary_expr(ctx, IR_MIN, type, insn);
} else if (STR_START(name, name_len, "llvm.minnum.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
return llvm2ir_binary_expr(ctx, IR_MIN, type, insn);
} else if (STR_START(name, name_len, "llvm.sadd.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_signed_type(type);
return llvm2ir_binary_expr(ctx, IR_ADD_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.uadd.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_unsigned_type(type);
return llvm2ir_binary_expr(ctx, IR_ADD_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.ssub.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_signed_type(type);
return llvm2ir_binary_expr(ctx, IR_SUB_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.usub.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_unsigned_type(type);
return llvm2ir_binary_expr(ctx, IR_SUB_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.smul.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_signed_type(type);
return llvm2ir_binary_expr(ctx, IR_MUL_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.umul.with.overflow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_overflow_type(LLVMGetReturnType(ftype));
type = llvm2ir_unsigned_type(type);
return llvm2ir_binary_expr(ctx, IR_MUL_OV, type, insn);
} else if (STR_START(name, name_len, "llvm.sadd.sat.")) {
ir_ref ref, overflow, op0, op1, limit;
ir_val val;
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_signed_type(type);
op0 = llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type);
op1 = llvm2ir_op(ctx, LLVMGetOperand(insn, 1), type);
if (IR_IS_CONST_REF(op0)) {
IR_ASSERT(ctx->ir_base[op0].type == type);
if (ctx->ir_base[op0].val.i64 >= 0) {
// positive_x + MIN -> y, positive_x + MAX = MAX
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
} else {
// negative_x + MIN -> MIN, negative_x + MAX = y
switch (ir_type_size[type]) {
case 1: val.u64 = 0x80; break;
case 2: val.u64 = 0x8000; break;
case 4: val.u64 = 0x80000000; break;
case 8: val.u64 = 0x8000000000000000; break;
default: IR_ASSERT(0);
}
}
limit = ir_const(ctx, val, type);
} else if (IR_IS_CONST_REF(op1)) {
IR_ASSERT(ctx->ir_base[op1].type == type);
if (ctx->ir_base[op1].val.i64 >= 0) {
// MIN + positive_x -> y, MAX + positive_x = MAX
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
} else {
// MIN + negative_x -> MIN, MAX + negative_x = y
switch (ir_type_size[type]) {
case 1: val.u64 = 0x80; break;
case 2: val.u64 = 0x8000; break;
case 4: val.u64 = 0x80000000; break;
case 8: val.u64 = 0x8000000000000000; break;
default: IR_ASSERT(0);
}
}
limit = ir_const(ctx, val, type);
} else {
ref = ir_SHR(type, op0, ir_const_u8(ctx, ir_type_size[type] * 8 - 1));
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
limit = ir_ADD(type, ref, ir_const(ctx, val, type));
}
ref = ir_fold2(ctx, IR_OPT(IR_ADD_OV, type), op0, op1);
overflow = ir_OVERFLOW(ref);
return ir_COND(type, overflow, limit, ref);
} else if (STR_START(name, name_len, "llvm.uadd.sat.")) {
ir_ref ref, overflow;
ir_val val;
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_unsigned_type(type);
ref = llvm2ir_binary_expr(ctx, IR_ADD_OV, type, insn);
overflow = ir_OVERFLOW(ref);
switch (ir_type_size[type]) {
case 1: val.u64 = 0xff; break;
case 2: val.u64 = 0xffff; break;
case 4: val.u64 = 0xffffffff; break;
case 8: val.u64 = 0xffffffffffffffff; break;
default: IR_ASSERT(0);
}
return ir_COND(type, overflow, ir_const(ctx, val, type), ref);
} else if (STR_START(name, name_len, "llvm.ssub.sat.")) {
ir_ref ref, overflow, op0, op1, limit;
ir_val val;
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_signed_type(type);
op0 = llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type);
op1 = llvm2ir_op(ctx, LLVMGetOperand(insn, 1), type);
if (IR_IS_CONST_REF(op0)) {
IR_ASSERT(ctx->ir_base[op0].type == type);
if (ctx->ir_base[op0].val.i64 >= 0) {
// positive_x - MIN -> MAX, positive_x - MAX = y
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
} else {
// negative_x - MIN -> y, negative_x - MAX = MIN
switch (ir_type_size[type]) {
case 1: val.u64 = 0x80; break;
case 2: val.u64 = 0x8000; break;
case 4: val.u64 = 0x80000000; break;
case 8: val.u64 = 0x8000000000000000; break;
default: IR_ASSERT(0);
}
}
limit = ir_const(ctx, val, type);
} else if (IR_IS_CONST_REF(op1)) {
IR_ASSERT(ctx->ir_base[op1].type == type);
if (ctx->ir_base[op1].val.i64 >= 0) {
// MIN - positive_x -> MIN, MAX - positive_x = y
switch (ir_type_size[type]) {
case 1: val.u64 = 0x80; break;
case 2: val.u64 = 0x8000; break;
case 4: val.u64 = 0x80000000; break;
case 8: val.u64 = 0x8000000000000000; break;
default: IR_ASSERT(0);
}
} else {
// MIN - negative_x -> y, MAX - negative_x = MAX
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
}
limit = ir_const(ctx, val, type);
} else {
ref = ir_SHR(type, op0, ir_const_u8(ctx, ir_type_size[type] * 8 - 1));
switch (ir_type_size[type]) {
case 1: val.u64 = 0x7f; break;
case 2: val.u64 = 0x7fff; break;
case 4: val.u64 = 0x7fffffff; break;
case 8: val.u64 = 0x7fffffffffffffff; break;
default: IR_ASSERT(0);
}
limit = ir_ADD(type, ref, ir_const(ctx, val, type));
}
ref = ir_fold2(ctx, IR_OPT(IR_SUB_OV, type), op0, op1);
overflow = ir_OVERFLOW(ref);
return ir_COND(type, overflow, limit, ref);
} else if (STR_START(name, name_len, "llvm.usub.sat.")) {
ir_ref ref, overflow;
ir_val val;
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
type = llvm2ir_unsigned_type(type);
ref = llvm2ir_binary_expr(ctx, IR_SUB_OV, type, insn);
overflow = ir_OVERFLOW(ref);
val.u64 = 0;
return ir_COND(type, overflow, ir_const(ctx, val, type), ref);
} else if (STR_START(name, name_len, "llvm.abs.")) {
IR_ASSERT(count == 2);
// TODO: support for the second argument
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
return ir_ABS(type, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.fabs.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
return ir_ABS(type, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.bswap.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
return ir_BSWAP(type, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.fshl.")
&& count == 3
&& LLVMGetOperand(insn, 0) == LLVMGetOperand(insn, 1)) {
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
return ir_ROL(type,
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type),
llvm2ir_op(ctx, LLVMGetOperand(insn, 2), type));
} else if (STR_START(name, name_len, "llvm.fshr.")
&& count == 3
&& LLVMGetOperand(insn, 0) == LLVMGetOperand(insn, 1)) {
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_INT(type));
return ir_ROR(type,
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type),
llvm2ir_op(ctx, LLVMGetOperand(insn, 2), type));
} else if (STR_EQUAL(name, name_len, "llvm.va_start")
|| STR_START(name, name_len, "llvm.va_start.")) {
IR_ASSERT(count == 1);
ir_VA_START(llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR));
return IR_NULL;
} else if (STR_EQUAL(name, name_len, "llvm.va_end")
|| STR_START(name, name_len, "llvm.va_end.")) {
IR_ASSERT(count == 1);
ir_VA_END(llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR));
return IR_NULL;
} else if (STR_EQUAL(name, name_len, "llvm.va_copy")
|| STR_START(name, name_len, "llvm.va_copy.")) {
IR_ASSERT(count == 2);
ir_VA_COPY(
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 1), IR_ADDR));
return IR_NULL;
} else if (STR_START(name, name_len, "llvm.ctpop.")) {
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
return ir_CTPOP(type, llvm2ir_op(ctx, op0, type));
} else if (STR_START(name, name_len, "llvm.ctlz.")) {
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
// TODO: support for the second argument
return ir_CTLZ(type, llvm2ir_op(ctx, op0, type));
} else if (STR_START(name, name_len, "llvm.cttz.")) {
LLVMValueRef op0 = LLVMGetOperand(insn, 0);
ir_type type = llvm2ir_type(LLVMTypeOf(op0));
// TODO: support for the second argument
return ir_CTTZ(type, llvm2ir_op(ctx, op0, type));
} else if (STR_START(name, name_len, "llvm.memset.")) {
IR_ASSERT(count == 3 || count == 4);
func = BUILTIN_FUNC_3("memset", IR_ADDR, IR_ADDR, IR_I32, IR_SIZE_T);
return ir_CALL_3(IR_VOID, func,
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 1), IR_I8),
llvm2ir_op(ctx, LLVMGetOperand(insn, 2), IR_SIZE_T));
} else if (STR_START(name, name_len, "llvm.memcpy.")) {
IR_ASSERT(count == 3 || count == 4);
func = BUILTIN_FUNC_3("memcpy", IR_ADDR, IR_ADDR, IR_ADDR, IR_SIZE_T);
return ir_CALL_3(IR_VOID, func,
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 1), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 2), IR_SIZE_T));
} else if (STR_START(name, name_len, "llvm.memmove.")) {
IR_ASSERT(count == 3 || count == 4);
func = BUILTIN_FUNC_3("memmove", IR_ADDR, IR_ADDR, IR_ADDR, IR_SIZE_T);
return ir_CALL_3(IR_VOID, func,
llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 1), IR_ADDR),
llvm2ir_op(ctx, LLVMGetOperand(insn, 2), IR_SIZE_T));
} else if (STR_START(name, name_len, "llvm.frameaddress.")) {
IR_ASSERT(LLVMGetValueKind(LLVMGetOperand(insn, 0)) == LLVMConstantIntValueKind);
IR_ASSERT(LLVMConstIntGetSExtValue(LLVMGetOperand(insn, 0)) == 0);
return ir_FRAME_ADDR();
} else if (STR_EQUAL(name, name_len, "llvm.stacksave")
|| STR_START(name, name_len, "llvm.stacksave.")) {
IR_ASSERT(count == 0);
return ir_BLOCK_BEGIN();
} else if (STR_EQUAL(name, name_len, "llvm.stackrestore")
|| STR_START(name, name_len, "llvm.stackrestore.")) {
IR_ASSERT(count == 1);
ir_BLOCK_END(llvm2ir_op(ctx, LLVMGetOperand(insn, 0), IR_ADDR));
return ctx->control;
} else if (STR_EQUAL(name, name_len, "llvm.debugtrap")) {
ir_TRAP();
return ctx->control;
} else if (STR_START(name, name_len, "llvm.sqrt.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("sqrt", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("sqrtf", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_1(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.sin.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("sin", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("sinf", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_1(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.cos.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("cos", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("cosf", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_1(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.pow.")) {
IR_ASSERT(count == 2);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("pow", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("powf", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_2(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type),
llvm2ir_op(ctx, LLVMGetOperand(insn, 1), type));
} else if (STR_START(name, name_len, "llvm.exp.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("exp", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("expf", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_1(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.exp2.")) {
IR_ASSERT(count == 1);
type = llvm2ir_type(LLVMGetReturnType(ftype));
IR_ASSERT(IR_IS_TYPE_FP(type));
if (type == IR_DOUBLE) {
func = BUILTIN_FUNC_1("exp2", IR_DOUBLE, IR_DOUBLE);
} else {
func = BUILTIN_FUNC_1("exp2f", IR_FLOAT, IR_FLOAT);
}
return ir_CALL_1(type, func, llvm2ir_op(ctx, LLVMGetOperand(insn, 0), type));
} else if (STR_START(name, name_len, "llvm.exp10.")) {
IR_ASSERT(count == 1);