mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 20:50:13 +01:00
Richard Smith
b5ae988a08
Provide builtins for compound assignments instead of defining them in the prelude as a use of a binary operator and an assignment. This allows us to lower compound assignment directly to LLVM operations instead of producing a function call. In the short term this also allows us to define a type-generic compound assignment in the prelude.
547 lines
23 KiB
C++
547 lines
23 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <algorithm>
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#include <vector>
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#include "llvm/IR/Type.h"
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#include "llvm/IR/Value.h"
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#include "toolchain/lower/function_context.h"
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#include "toolchain/sem_ir/builtin_function_kind.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/typed_insts.h"
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namespace Carbon::Lower {
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// Get the predicate to use for an `icmp` instruction generated for the
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// specified builtin.
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static auto GetBuiltinICmpPredicate(SemIR::BuiltinFunctionKind builtin_kind,
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bool is_signed)
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-> llvm::CmpInst::Predicate {
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switch (builtin_kind) {
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case SemIR::BuiltinFunctionKind::IntEq:
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case SemIR::BuiltinFunctionKind::BoolEq:
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return llvm::CmpInst::ICMP_EQ;
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case SemIR::BuiltinFunctionKind::IntNeq:
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case SemIR::BuiltinFunctionKind::BoolNeq:
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return llvm::CmpInst::ICMP_NE;
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case SemIR::BuiltinFunctionKind::IntLess:
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return is_signed ? llvm::CmpInst::ICMP_SLT : llvm::CmpInst::ICMP_ULT;
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case SemIR::BuiltinFunctionKind::IntLessEq:
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return is_signed ? llvm::CmpInst::ICMP_SLE : llvm::CmpInst::ICMP_ULE;
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case SemIR::BuiltinFunctionKind::IntGreater:
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return is_signed ? llvm::CmpInst::ICMP_SGT : llvm::CmpInst::ICMP_UGT;
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case SemIR::BuiltinFunctionKind::IntGreaterEq:
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return is_signed ? llvm::CmpInst::ICMP_SGE : llvm::CmpInst::ICMP_UGE;
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default:
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CARBON_FATAL("Unexpected builtin kind {0}", builtin_kind);
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}
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}
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// Get the predicate to use for an `fcmp` instruction generated for the
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// specified builtin.
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static auto GetBuiltinFCmpPredicate(SemIR::BuiltinFunctionKind builtin_kind)
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-> llvm::CmpInst::Predicate {
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switch (builtin_kind) {
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case SemIR::BuiltinFunctionKind::FloatEq:
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return llvm::CmpInst::FCMP_OEQ;
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case SemIR::BuiltinFunctionKind::FloatNeq:
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return llvm::CmpInst::FCMP_ONE;
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case SemIR::BuiltinFunctionKind::FloatLess:
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return llvm::CmpInst::FCMP_OLT;
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case SemIR::BuiltinFunctionKind::FloatLessEq:
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return llvm::CmpInst::FCMP_OLE;
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case SemIR::BuiltinFunctionKind::FloatGreater:
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return llvm::CmpInst::FCMP_OGT;
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case SemIR::BuiltinFunctionKind::FloatGreaterEq:
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return llvm::CmpInst::FCMP_OGE;
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default:
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CARBON_FATAL("Unexpected builtin kind {0}", builtin_kind);
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}
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}
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// Returns whether the specified instruction has a signed integer type.
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static auto IsSignedInt(FunctionContext& context, SemIR::InstId int_id)
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-> bool {
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return context.sem_ir().types().IsSignedInt(context.GetTypeOfInst(int_id));
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}
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// Creates a zext or sext instruction depending on the signedness of the
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// operand.
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static auto CreateExt(FunctionContext& context, llvm::Value* value,
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llvm::Type* type, bool is_signed,
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const llvm::Twine& name = "") -> llvm::Value* {
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return is_signed ? context.builder().CreateSExt(value, type, name)
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: context.builder().CreateZExt(value, type, name);
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}
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// Creates a zext, sext, or trunc instruction depending on the signedness of the
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// operand.
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static auto CreateExtOrTrunc(FunctionContext& context, llvm::Value* value,
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llvm::Type* type, bool is_signed,
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const llvm::Twine& name = "") -> llvm::Value* {
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return is_signed ? context.builder().CreateSExtOrTrunc(value, type, name)
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: context.builder().CreateZExtOrTrunc(value, type, name);
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}
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// Create a integer bit shift for a call to a builtin bit shift function.
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static auto CreateIntShift(FunctionContext& context,
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llvm::Instruction::BinaryOps bin_op,
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llvm::Value* lhs, llvm::Value* rhs) -> llvm::Value* {
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// Weirdly, LLVM requires the operands of bit shift operators to be of the
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// same type. We can always use the width of the LHS, because if the RHS
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// doesn't fit in that then the cast is out of range anyway. Zero-extending is
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// always fine because it's an error for the RHS to be negative.
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//
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// TODO: In a development build we should trap if the RHS is signed and
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// negative or greater than or equal to the number of bits in the left-hand
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// type.
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rhs = context.builder().CreateZExtOrTrunc(rhs, lhs->getType(), "rhs");
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return context.builder().CreateBinOp(bin_op, lhs, rhs);
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}
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// Handles a call to a builtin integer comparison operator.
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static auto HandleIntComparison(FunctionContext& context, SemIR::InstId inst_id,
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SemIR::BuiltinFunctionKind builtin_kind,
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SemIR::InstId lhs_id, SemIR::InstId rhs_id)
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-> void {
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llvm::Value* lhs = context.GetValue(lhs_id);
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llvm::Value* rhs = context.GetValue(rhs_id);
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const auto* lhs_type = cast<llvm::IntegerType>(lhs->getType());
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const auto* rhs_type = cast<llvm::IntegerType>(rhs->getType());
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// We perform a signed comparison if either operand is signed.
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bool lhs_signed = IsSignedInt(context, lhs_id);
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bool rhs_signed = IsSignedInt(context, rhs_id);
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bool cmp_signed = lhs_signed || rhs_signed;
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// Compute the width for the comparison. This is the smallest width that
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// fits both types, after widening them to include a sign bit if
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// necessary.
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auto width_for_cmp = [&](const llvm::IntegerType* type, bool is_signed) {
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unsigned width = type->getBitWidth();
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if (!is_signed && cmp_signed) {
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// We're performing a signed comparison but this input is unsigned.
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// Widen it by at least one bit to provide a sign bit.
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++width;
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}
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return width;
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};
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// TODO: This might be an awkward size, such as 33 or 65 bits, for a
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// signed/unsigned comparison. Would it be better to round this up to a
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// "nicer" bit width?
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unsigned cmp_width = std::max(width_for_cmp(lhs_type, lhs_signed),
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width_for_cmp(rhs_type, rhs_signed));
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auto* cmp_type = llvm::IntegerType::get(context.llvm_context(), cmp_width);
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// Widen the operands as needed.
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lhs = CreateExt(context, lhs, cmp_type, lhs_signed, "lhs");
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rhs = CreateExt(context, rhs, cmp_type, rhs_signed, "rhs");
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context.SetLocal(
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inst_id,
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context.builder().CreateICmp(
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GetBuiltinICmpPredicate(builtin_kind, cmp_signed), lhs, rhs));
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}
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// Creates a binary operator for a call to a builtin for either that operation
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// or the corresponding compound assignment.
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static auto CreateBinaryOperatorForBuiltin(
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FunctionContext& context, SemIR::InstId inst_id,
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SemIR::BuiltinFunctionKind builtin_kind, llvm::Value* lhs, llvm::Value* rhs)
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-> llvm::Value* {
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// TODO: Consider setting this to true in the performance build mode if the
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// result type is a signed integer type.
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constexpr bool SignedOverflowIsUB = false;
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switch (builtin_kind) {
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case SemIR::BuiltinFunctionKind::IntSAdd:
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case SemIR::BuiltinFunctionKind::IntSAddAssign: {
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return context.builder().CreateAdd(lhs, rhs, "",
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/*HasNUW=*/false,
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/*HasNSW=*/SignedOverflowIsUB);
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}
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case SemIR::BuiltinFunctionKind::IntSSub:
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case SemIR::BuiltinFunctionKind::IntSSubAssign: {
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return context.builder().CreateSub(lhs, rhs, "",
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/*HasNUW=*/false,
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/*HasNSW=*/SignedOverflowIsUB);
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}
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case SemIR::BuiltinFunctionKind::IntSMul:
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case SemIR::BuiltinFunctionKind::IntSMulAssign: {
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return context.builder().CreateMul(lhs, rhs, "",
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/*HasNUW=*/false,
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/*HasNSW=*/SignedOverflowIsUB);
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}
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case SemIR::BuiltinFunctionKind::IntSDiv:
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case SemIR::BuiltinFunctionKind::IntSDivAssign: {
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return context.builder().CreateSDiv(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntSMod:
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case SemIR::BuiltinFunctionKind::IntSModAssign: {
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return context.builder().CreateSRem(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntUAdd:
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case SemIR::BuiltinFunctionKind::IntUAddAssign: {
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return context.builder().CreateAdd(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntUSub:
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case SemIR::BuiltinFunctionKind::IntUSubAssign: {
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return context.builder().CreateSub(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntUMul:
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case SemIR::BuiltinFunctionKind::IntUMulAssign: {
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return context.builder().CreateMul(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntUDiv:
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case SemIR::BuiltinFunctionKind::IntUDivAssign: {
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return context.builder().CreateUDiv(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntUMod:
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case SemIR::BuiltinFunctionKind::IntUModAssign: {
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return context.builder().CreateURem(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntAnd:
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case SemIR::BuiltinFunctionKind::IntAndAssign: {
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return context.builder().CreateAnd(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntOr:
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case SemIR::BuiltinFunctionKind::IntOrAssign: {
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return context.builder().CreateOr(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntXor:
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case SemIR::BuiltinFunctionKind::IntXorAssign: {
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return context.builder().CreateXor(lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntLeftShift:
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case SemIR::BuiltinFunctionKind::IntLeftShiftAssign: {
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return CreateIntShift(context, llvm::Instruction::Shl, lhs, rhs);
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}
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case SemIR::BuiltinFunctionKind::IntRightShift:
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case SemIR::BuiltinFunctionKind::IntRightShiftAssign: {
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// TODO: Split each of these builtins into separate signed and unsigned
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// builtins rather than working out here whether we're performing an
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// arithmetic or logical shift.
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auto lhs_id = context.sem_ir().inst_blocks().Get(
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context.sem_ir().insts().GetAs<SemIR::Call>(inst_id).args_id)[0];
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auto lhs_type_id = context.GetTypeOfInst(lhs_id);
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if (builtin_kind == SemIR::BuiltinFunctionKind::IntRightShiftAssign) {
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lhs_type_id = context.sem_ir().GetPointeeType(lhs_type_id);
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}
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return CreateIntShift(context,
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context.sem_ir().types().IsSignedInt(lhs_type_id)
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? llvm::Instruction::AShr
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: llvm::Instruction::LShr,
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lhs, rhs);
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}
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default: {
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CARBON_FATAL("Unexpected binary operator {0}", builtin_kind);
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}
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}
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}
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// Handles a call to a builtin function.
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static auto HandleBuiltinCall(FunctionContext& context, SemIR::InstId inst_id,
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SemIR::BuiltinFunctionKind builtin_kind,
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llvm::ArrayRef<SemIR::InstId> arg_ids) -> void {
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// TODO: Consider setting this to true in the performance build mode if the
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// result type is a signed integer type.
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constexpr bool SignedOverflowIsUB = false;
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// TODO: Move the instruction names here into InstNamer.
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switch (builtin_kind) {
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case SemIR::BuiltinFunctionKind::None:
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CARBON_FATAL("No callee in function call.");
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case SemIR::BuiltinFunctionKind::NoOp:
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CARBON_FATAL("NoOp is a constant expression and won't reach this.");
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case SemIR::BuiltinFunctionKind::PrintChar: {
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auto* i32_type = llvm::IntegerType::getInt32Ty(context.llvm_context());
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llvm::Value* arg_value = context.builder().CreateSExtOrTrunc(
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context.GetValue(arg_ids[0]), i32_type);
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auto putchar = context.llvm_module().getOrInsertFunction(
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"putchar", i32_type, i32_type);
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auto* result = context.builder().CreateCall(putchar, {arg_value});
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context.SetLocal(
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inst_id,
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context.builder().CreateSExtOrTrunc(
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result, context.GetType(
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context.sem_ir().insts().Get(inst_id).type_id())));
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return;
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}
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case SemIR::BuiltinFunctionKind::PrintInt: {
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auto* i32_type = llvm::IntegerType::getInt32Ty(context.llvm_context());
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auto* ptr_type = llvm::PointerType::get(context.llvm_context(), 0);
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auto* printf_type = llvm::FunctionType::get(i32_type, {ptr_type},
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/*isVarArg=*/true);
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llvm::FunctionCallee printf =
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context.llvm_module().getOrInsertFunction("printf", printf_type);
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llvm::Value* format_string = context.printf_int_format_string();
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llvm::Value* arg_value = context.builder().CreateSExtOrTrunc(
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context.GetValue(arg_ids[0]), i32_type);
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context.SetLocal(inst_id, context.builder().CreateCall(
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printf, {format_string, arg_value}));
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return;
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}
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case SemIR::BuiltinFunctionKind::ReadChar: {
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auto* i32_type = llvm::IntegerType::getInt32Ty(context.llvm_context());
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auto getchar =
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context.llvm_module().getOrInsertFunction("getchar", i32_type);
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auto* result = context.builder().CreateCall(getchar, {});
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context.SetLocal(
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inst_id,
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context.builder().CreateSExtOrTrunc(
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result, context.GetType(
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context.sem_ir().insts().Get(inst_id).type_id())));
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return;
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}
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case SemIR::BuiltinFunctionKind::TypeAnd: {
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context.SetLocal(inst_id, context.GetTypeAsValue());
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return;
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}
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case SemIR::BuiltinFunctionKind::BoolMakeType:
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case SemIR::BuiltinFunctionKind::FloatMakeType:
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case SemIR::BuiltinFunctionKind::IntLiteralMakeType:
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case SemIR::BuiltinFunctionKind::IntMakeTypeSigned:
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case SemIR::BuiltinFunctionKind::IntMakeTypeUnsigned:
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context.SetLocal(inst_id, context.GetTypeAsValue());
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return;
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case SemIR::BuiltinFunctionKind::IntConvert: {
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context.SetLocal(
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inst_id,
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CreateExtOrTrunc(
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context, context.GetValue(arg_ids[0]),
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context.GetType(context.sem_ir().insts().Get(inst_id).type_id()),
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IsSignedInt(context, arg_ids[0])));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntSNegate: {
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// Lower `-x` as `0 - x`.
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auto* operand = context.GetValue(arg_ids[0]);
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context.SetLocal(
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inst_id,
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context.builder().CreateSub(
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llvm::ConstantInt::getNullValue(operand->getType()), operand, "",
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/*HasNUW=*/false,
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/*HasNSW=*/SignedOverflowIsUB));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntUNegate: {
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// Lower `-x` as `0 - x`.
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auto* operand = context.GetValue(arg_ids[0]);
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context.SetLocal(
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inst_id,
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context.builder().CreateSub(
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llvm::ConstantInt::getNullValue(operand->getType()), operand));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntComplement: {
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// Lower `^x` as `-1 ^ x`.
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auto* operand = context.GetValue(arg_ids[0]);
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context.SetLocal(
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inst_id,
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context.builder().CreateXor(
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llvm::ConstantInt::getSigned(operand->getType(), -1), operand));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntSAdd:
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case SemIR::BuiltinFunctionKind::IntSSub:
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case SemIR::BuiltinFunctionKind::IntSMul:
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case SemIR::BuiltinFunctionKind::IntSDiv:
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case SemIR::BuiltinFunctionKind::IntSMod:
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case SemIR::BuiltinFunctionKind::IntUAdd:
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case SemIR::BuiltinFunctionKind::IntUSub:
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case SemIR::BuiltinFunctionKind::IntUMul:
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case SemIR::BuiltinFunctionKind::IntUDiv:
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case SemIR::BuiltinFunctionKind::IntUMod:
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case SemIR::BuiltinFunctionKind::IntAnd:
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case SemIR::BuiltinFunctionKind::IntOr:
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case SemIR::BuiltinFunctionKind::IntXor:
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case SemIR::BuiltinFunctionKind::IntLeftShift:
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case SemIR::BuiltinFunctionKind::IntRightShift: {
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context.SetLocal(inst_id, CreateBinaryOperatorForBuiltin(
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context, inst_id, builtin_kind,
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context.GetValue(arg_ids[0]),
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context.GetValue(arg_ids[1])));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntSAddAssign:
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case SemIR::BuiltinFunctionKind::IntSSubAssign:
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case SemIR::BuiltinFunctionKind::IntSMulAssign:
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case SemIR::BuiltinFunctionKind::IntSDivAssign:
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case SemIR::BuiltinFunctionKind::IntSModAssign:
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case SemIR::BuiltinFunctionKind::IntUAddAssign:
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case SemIR::BuiltinFunctionKind::IntUSubAssign:
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case SemIR::BuiltinFunctionKind::IntUMulAssign:
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case SemIR::BuiltinFunctionKind::IntUDivAssign:
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case SemIR::BuiltinFunctionKind::IntUModAssign:
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case SemIR::BuiltinFunctionKind::IntAndAssign:
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case SemIR::BuiltinFunctionKind::IntOrAssign:
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case SemIR::BuiltinFunctionKind::IntXorAssign:
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case SemIR::BuiltinFunctionKind::IntLeftShiftAssign:
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case SemIR::BuiltinFunctionKind::IntRightShiftAssign: {
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auto* lhs_ptr = context.GetValue(arg_ids[0]);
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auto lhs_type_id = context.GetTypeOfInst(arg_ids[0]);
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auto pointee_type_id = context.sem_ir().GetPointeeType(lhs_type_id);
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// TODO: Factor out the code to create loads and stores, and include alias
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// and alignment information.
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auto* lhs_value = context.builder().CreateLoad(
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context.GetType(pointee_type_id), lhs_ptr);
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auto* result = CreateBinaryOperatorForBuiltin(
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context, inst_id, builtin_kind, lhs_value,
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context.GetValue(arg_ids[1]));
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context.builder().CreateStore(result, lhs_ptr);
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// TODO: Add a helper to get a "no value representation" value.
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context.SetLocal(inst_id, llvm::PoisonValue::get(context.GetType(
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context.GetTypeOfInst(inst_id))));
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return;
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}
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case SemIR::BuiltinFunctionKind::IntEq:
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case SemIR::BuiltinFunctionKind::IntNeq:
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case SemIR::BuiltinFunctionKind::IntLess:
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case SemIR::BuiltinFunctionKind::IntLessEq:
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case SemIR::BuiltinFunctionKind::IntGreater:
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case SemIR::BuiltinFunctionKind::IntGreaterEq:
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case SemIR::BuiltinFunctionKind::BoolEq:
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case SemIR::BuiltinFunctionKind::BoolNeq: {
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HandleIntComparison(context, inst_id, builtin_kind, arg_ids[0],
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arg_ids[1]);
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return;
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}
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|
case SemIR::BuiltinFunctionKind::FloatNegate: {
|
|
context.SetLocal(
|
|
inst_id, context.builder().CreateFNeg(context.GetValue(arg_ids[0])));
|
|
return;
|
|
}
|
|
case SemIR::BuiltinFunctionKind::FloatAdd: {
|
|
context.SetLocal(
|
|
inst_id, context.builder().CreateFAdd(context.GetValue(arg_ids[0]),
|
|
context.GetValue(arg_ids[1])));
|
|
return;
|
|
}
|
|
case SemIR::BuiltinFunctionKind::FloatSub: {
|
|
context.SetLocal(
|
|
inst_id, context.builder().CreateFSub(context.GetValue(arg_ids[0]),
|
|
context.GetValue(arg_ids[1])));
|
|
return;
|
|
}
|
|
case SemIR::BuiltinFunctionKind::FloatMul: {
|
|
context.SetLocal(
|
|
inst_id, context.builder().CreateFMul(context.GetValue(arg_ids[0]),
|
|
context.GetValue(arg_ids[1])));
|
|
return;
|
|
}
|
|
case SemIR::BuiltinFunctionKind::FloatDiv: {
|
|
context.SetLocal(
|
|
inst_id, context.builder().CreateFDiv(context.GetValue(arg_ids[0]),
|
|
context.GetValue(arg_ids[1])));
|
|
return;
|
|
}
|
|
case SemIR::BuiltinFunctionKind::FloatEq:
|
|
case SemIR::BuiltinFunctionKind::FloatNeq:
|
|
case SemIR::BuiltinFunctionKind::FloatLess:
|
|
case SemIR::BuiltinFunctionKind::FloatLessEq:
|
|
case SemIR::BuiltinFunctionKind::FloatGreater:
|
|
case SemIR::BuiltinFunctionKind::FloatGreaterEq: {
|
|
context.SetLocal(inst_id, context.builder().CreateFCmp(
|
|
GetBuiltinFCmpPredicate(builtin_kind),
|
|
context.GetValue(arg_ids[0]),
|
|
context.GetValue(arg_ids[1])));
|
|
return;
|
|
}
|
|
|
|
case SemIR::BuiltinFunctionKind::IntConvertChecked: {
|
|
// TODO: Check this statically.
|
|
CARBON_CHECK(builtin_kind.IsCompTimeOnly(
|
|
context.sem_ir(), arg_ids,
|
|
context.sem_ir().insts().Get(inst_id).type_id()));
|
|
CARBON_FATAL("Missing constant value for call to comptime-only function");
|
|
}
|
|
}
|
|
|
|
CARBON_FATAL("Unsupported builtin call.");
|
|
}
|
|
|
|
auto HandleInst(FunctionContext& context, SemIR::InstId inst_id,
|
|
SemIR::Call inst) -> void {
|
|
llvm::ArrayRef<SemIR::InstId> arg_ids =
|
|
context.sem_ir().inst_blocks().Get(inst.args_id);
|
|
|
|
auto callee_function = SemIR::GetCalleeFunction(
|
|
context.sem_ir(), inst.callee_id, context.specific_id());
|
|
CARBON_CHECK(callee_function.function_id.has_value());
|
|
|
|
if (auto builtin_kind = context.sem_ir()
|
|
.functions()
|
|
.Get(callee_function.function_id)
|
|
.builtin_function_kind;
|
|
builtin_kind != SemIR::BuiltinFunctionKind::None) {
|
|
HandleBuiltinCall(context, inst_id, builtin_kind, arg_ids);
|
|
return;
|
|
}
|
|
|
|
std::vector<llvm::Value*> args;
|
|
|
|
auto inst_type_id = context.GetTypeOfInst(inst_id);
|
|
|
|
if (SemIR::ReturnTypeInfo::ForType(context.sem_ir(), inst_type_id)
|
|
.has_return_slot()) {
|
|
args.push_back(context.GetValue(arg_ids.back()));
|
|
arg_ids = arg_ids.drop_back();
|
|
}
|
|
|
|
for (auto arg_id : arg_ids) {
|
|
auto arg_type_id = context.GetTypeOfInst(arg_id);
|
|
if (SemIR::ValueRepr::ForType(context.sem_ir(), arg_type_id).kind !=
|
|
SemIR::ValueRepr::None) {
|
|
args.push_back(context.GetValue(arg_id));
|
|
}
|
|
}
|
|
|
|
llvm::CallInst* call;
|
|
const auto& function =
|
|
context.sem_ir().functions().Get(callee_function.function_id);
|
|
if (function.virtual_index != -1) {
|
|
CARBON_CHECK(!args.empty(),
|
|
"Virtual functions must have at least one parameter");
|
|
auto* ptr_type =
|
|
llvm::PointerType::get(context.llvm_context(), /*AddressSpace=*/0);
|
|
// The vtable pointer is always at the start of the object in the Carbon
|
|
// ABI, so a pointer to the object is a pointer to the vtable pointer - load
|
|
// that to get a pointer to the vtable.
|
|
auto* vtable =
|
|
context.builder().CreateLoad(ptr_type, args.front(), "vtable");
|
|
auto* i32_type = llvm::IntegerType::getInt32Ty(context.llvm_context());
|
|
auto function_type_info = context.BuildFunctionTypeInfo(
|
|
function, callee_function.resolved_specific_id);
|
|
call = context.builder().CreateCall(
|
|
function_type_info.type,
|
|
context.builder().CreateCall(
|
|
llvm::Intrinsic::getOrInsertDeclaration(
|
|
&context.llvm_module(), llvm::Intrinsic::load_relative,
|
|
{i32_type}),
|
|
{vtable,
|
|
llvm::ConstantInt::get(
|
|
i32_type, static_cast<uint64_t>(function.virtual_index) * 4)}),
|
|
args);
|
|
} else {
|
|
call = context.builder().CreateCall(
|
|
context.GetOrCreateFunction(callee_function.function_id,
|
|
callee_function.resolved_specific_id),
|
|
args);
|
|
}
|
|
|
|
context.SetLocal(inst_id, call);
|
|
}
|
|
|
|
} // namespace Carbon::Lower
|