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clang-p2996/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
Heejin Ahn c921ac724f [WebAssembly] Enable multivalue return when multivalue ABI is used (#88492) 
Multivalue feature of WebAssembly has been standardized for several
years now. I think it makes sense to be able to enable it in the feature
section by default for our clang/llvm-produced binaries so that the
multivalue feature can be used as necessary when necessary within our
toolchain and also when running other optimizers (e.g. wasm-opt) after
the LLVM code generation.

But some WebAssembly toolchains, such as Emscripten, do not provide both
mulvalue-returning and not-multivalue-returning versions of libraries.
Also allowing the uses of multivalue in the features section does not
necessarily mean we generate them whenever we can to the fullest, which
is a different code generation / optimization option.

So this makes the lowering of multivalue returns conditional on the use
of 'experimental-mv' target ABI. This ABI is turned off by default and
turned on by passing `-Xclang -target-abi -Xclang experimental-mv` to
`clang`, or `-target-abi experimental-mv` to `clang -cc1` or `llc`.

But the purpose of this PR is not tying the multivalue lowering to this
specific 'experimental-mv'. 'experimental-mv' is just one multivalue ABI
we currently have, and it is still experimental, meaning it is not very
well optimized or tuned for performance. (e.g. it does not have the
limitation of the max number of multivalue-lowered values, which can be
detrimental to performance.) We may change the name of this ABI, or
improve it, or add a new multivalue ABI in the future. Also I heard that
WASI is planning to add their multivalue ABI soon. So the plan is,
whenever any one of multivalue ABIs is enabled, we enable the lowering
of multivalue returns in the backend. We currently have only
'experimental-mv' in the repo so we only check for that in this PR.

Related past discussions:
 #82714
https://github.com/WebAssembly/tool-conventions/pull/223#issuecomment-2008298652
2024-04-23 17:48:59 +09:00

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// CodeGen/RuntimeLibcallSignatures.cpp - R.T. Lib. Call Signatures -*- C++ -*--
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains signature information for runtime libcalls.
///
/// CodeGen uses external symbols, which it refers to by name. The WebAssembly
/// target needs type information for all functions. This file contains a big
/// table providing type signatures for all runtime library functions that LLVM
/// uses.
///
/// This is currently a fairly heavy-handed solution.
///
//===----------------------------------------------------------------------===//
#include "WebAssemblyRuntimeLibcallSignatures.h"
#include "WebAssemblySubtarget.h"
#include "WebAssemblyUtilities.h"
#include "llvm/CodeGen/RuntimeLibcalls.h"
using namespace llvm;
namespace {
enum RuntimeLibcallSignature {
func,
f32_func_f32,
f32_func_f64,
f32_func_i32,
f32_func_i64,
f32_func_i16,
f64_func_f32,
f64_func_f64,
f64_func_i32,
f64_func_i64,
i32_func_f32,
i32_func_f64,
i32_func_i32,
i64_func_f32,
i64_func_f64,
i64_func_i64,
f32_func_f32_f32,
f32_func_f32_i32,
f32_func_i64_i64,
f64_func_f64_f64,
f64_func_f64_i32,
f64_func_i64_i64,
i16_func_f32,
i16_func_f64,
i16_func_i64_i64,
i8_func_i8_i8,
func_f32_iPTR_iPTR,
func_f64_iPTR_iPTR,
i16_func_i16_i16,
i32_func_f32_f32,
i32_func_f64_f64,
i32_func_i32_i32,
i32_func_i32_i32_iPTR,
i64_func_i64_i64,
i64_func_i64_i64_iPTR,
i64_i64_func_i32,
i64_i64_func_i64,
i64_i64_func_f32,
i64_i64_func_f64,
i16_i16_func_i16_i16,
i32_i32_func_i32_i32,
i64_i64_func_i64_i64,
i64_i64_func_i64_i64_i64_i64,
i64_i64_func_i64_i64_i64_i64_iPTR,
i64_i64_i64_i64_func_i64_i64_i64_i64,
i64_i64_func_i64_i64_i32,
i64_i64_func_i64_i64_i64_i64_i64_i64,
iPTR_func_i32,
iPTR_func_iPTR_i32_iPTR,
iPTR_func_iPTR_iPTR_iPTR,
f32_func_f32_f32_f32,
f64_func_f64_f64_f64,
func_i64_i64_iPTR_iPTR,
i32_func_i64_i64,
i32_func_i64_i64_i64_i64,
iPTR_func_f32,
iPTR_func_f64,
iPTR_func_i64_i64,
unsupported
};
struct RuntimeLibcallSignatureTable {
std::vector<RuntimeLibcallSignature> Table;
// Any newly-added libcalls will be unsupported by default.
RuntimeLibcallSignatureTable() : Table(RTLIB::UNKNOWN_LIBCALL, unsupported) {
// Integer
Table[RTLIB::SHL_I16] = i16_func_i16_i16;
Table[RTLIB::SHL_I32] = i32_func_i32_i32;
Table[RTLIB::SHL_I64] = i64_func_i64_i64;
Table[RTLIB::SHL_I128] = i64_i64_func_i64_i64_i32;
Table[RTLIB::SRL_I16] = i16_func_i16_i16;
Table[RTLIB::SRL_I32] = i32_func_i32_i32;
Table[RTLIB::SRL_I64] = i64_func_i64_i64;
Table[RTLIB::SRL_I128] = i64_i64_func_i64_i64_i32;
Table[RTLIB::SRA_I16] = i16_func_i16_i16;
Table[RTLIB::SRA_I32] = i32_func_i32_i32;
Table[RTLIB::SRA_I64] = i64_func_i64_i64;
Table[RTLIB::SRA_I128] = i64_i64_func_i64_i64_i32;
Table[RTLIB::MUL_I8] = i8_func_i8_i8;
Table[RTLIB::MUL_I16] = i16_func_i16_i16;
Table[RTLIB::MUL_I32] = i32_func_i32_i32;
Table[RTLIB::MUL_I64] = i64_func_i64_i64;
Table[RTLIB::MUL_I128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::MULO_I32] = i32_func_i32_i32_iPTR;
Table[RTLIB::MULO_I64] = i64_func_i64_i64_iPTR;
Table[RTLIB::MULO_I128] = i64_i64_func_i64_i64_i64_i64_iPTR;
Table[RTLIB::SDIV_I8] = i8_func_i8_i8;
Table[RTLIB::SDIV_I16] = i16_func_i16_i16;
Table[RTLIB::SDIV_I32] = i32_func_i32_i32;
Table[RTLIB::SDIV_I64] = i64_func_i64_i64;
Table[RTLIB::SDIV_I128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::UDIV_I8] = i8_func_i8_i8;
Table[RTLIB::UDIV_I16] = i16_func_i16_i16;
Table[RTLIB::UDIV_I32] = i32_func_i32_i32;
Table[RTLIB::UDIV_I64] = i64_func_i64_i64;
Table[RTLIB::UDIV_I128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::SREM_I8] = i8_func_i8_i8;
Table[RTLIB::SREM_I16] = i16_func_i16_i16;
Table[RTLIB::SREM_I32] = i32_func_i32_i32;
Table[RTLIB::SREM_I64] = i64_func_i64_i64;
Table[RTLIB::SREM_I128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::UREM_I8] = i8_func_i8_i8;
Table[RTLIB::UREM_I16] = i16_func_i16_i16;
Table[RTLIB::UREM_I32] = i32_func_i32_i32;
Table[RTLIB::UREM_I64] = i64_func_i64_i64;
Table[RTLIB::UREM_I128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::SDIVREM_I8] = i8_func_i8_i8;
Table[RTLIB::SDIVREM_I16] = i16_i16_func_i16_i16;
Table[RTLIB::SDIVREM_I32] = i32_i32_func_i32_i32;
Table[RTLIB::SDIVREM_I64] = i64_func_i64_i64;
Table[RTLIB::SDIVREM_I128] = i64_i64_i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::UDIVREM_I8] = i8_func_i8_i8;
Table[RTLIB::UDIVREM_I16] = i16_i16_func_i16_i16;
Table[RTLIB::UDIVREM_I32] = i32_i32_func_i32_i32;
Table[RTLIB::UDIVREM_I64] = i64_i64_func_i64_i64;
Table[RTLIB::UDIVREM_I128] = i64_i64_i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::NEG_I32] = i32_func_i32;
Table[RTLIB::NEG_I64] = i64_func_i64;
// Floating-point.
// All F80 and PPCF128 routines are unsupported.
Table[RTLIB::ADD_F32] = f32_func_f32_f32;
Table[RTLIB::ADD_F64] = f64_func_f64_f64;
Table[RTLIB::ADD_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::SUB_F32] = f32_func_f32_f32;
Table[RTLIB::SUB_F64] = f64_func_f64_f64;
Table[RTLIB::SUB_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::MUL_F32] = f32_func_f32_f32;
Table[RTLIB::MUL_F64] = f64_func_f64_f64;
Table[RTLIB::MUL_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::DIV_F32] = f32_func_f32_f32;
Table[RTLIB::DIV_F64] = f64_func_f64_f64;
Table[RTLIB::DIV_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::REM_F32] = f32_func_f32_f32;
Table[RTLIB::REM_F64] = f64_func_f64_f64;
Table[RTLIB::REM_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::FMA_F32] = f32_func_f32_f32_f32;
Table[RTLIB::FMA_F64] = f64_func_f64_f64_f64;
Table[RTLIB::FMA_F128] = i64_i64_func_i64_i64_i64_i64_i64_i64;
Table[RTLIB::POWI_F32] = f32_func_f32_i32;
Table[RTLIB::POWI_F64] = f64_func_f64_i32;
Table[RTLIB::POWI_F128] = i64_i64_func_i64_i64_i32;
Table[RTLIB::SQRT_F32] = f32_func_f32;
Table[RTLIB::SQRT_F64] = f64_func_f64;
Table[RTLIB::SQRT_F128] = i64_i64_func_i64_i64;
Table[RTLIB::CBRT_F32] = f32_func_f32;
Table[RTLIB::CBRT_F64] = f64_func_f64;
Table[RTLIB::CBRT_F128] = i64_i64_func_i64_i64;
Table[RTLIB::LOG_F32] = f32_func_f32;
Table[RTLIB::LOG_F64] = f64_func_f64;
Table[RTLIB::LOG_F128] = i64_i64_func_i64_i64;
Table[RTLIB::LOG2_F32] = f32_func_f32;
Table[RTLIB::LOG2_F64] = f64_func_f64;
Table[RTLIB::LOG2_F128] = i64_i64_func_i64_i64;
Table[RTLIB::LOG10_F32] = f32_func_f32;
Table[RTLIB::LOG10_F64] = f64_func_f64;
Table[RTLIB::LOG10_F128] = i64_i64_func_i64_i64;
Table[RTLIB::EXP_F32] = f32_func_f32;
Table[RTLIB::EXP_F64] = f64_func_f64;
Table[RTLIB::EXP_F128] = i64_i64_func_i64_i64;
Table[RTLIB::EXP2_F32] = f32_func_f32;
Table[RTLIB::EXP2_F64] = f64_func_f64;
Table[RTLIB::EXP2_F128] = i64_i64_func_i64_i64;
Table[RTLIB::EXP10_F32] = f32_func_f32;
Table[RTLIB::EXP10_F64] = f64_func_f64;
Table[RTLIB::EXP10_F128] = i64_i64_func_i64_i64;
Table[RTLIB::SIN_F32] = f32_func_f32;
Table[RTLIB::SIN_F64] = f64_func_f64;
Table[RTLIB::SIN_F128] = i64_i64_func_i64_i64;
Table[RTLIB::COS_F32] = f32_func_f32;
Table[RTLIB::COS_F64] = f64_func_f64;
Table[RTLIB::COS_F128] = i64_i64_func_i64_i64;
Table[RTLIB::SINCOS_F32] = func_f32_iPTR_iPTR;
Table[RTLIB::SINCOS_F64] = func_f64_iPTR_iPTR;
Table[RTLIB::SINCOS_F128] = func_i64_i64_iPTR_iPTR;
Table[RTLIB::POW_F32] = f32_func_f32_f32;
Table[RTLIB::POW_F64] = f64_func_f64_f64;
Table[RTLIB::POW_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::CEIL_F32] = f32_func_f32;
Table[RTLIB::CEIL_F64] = f64_func_f64;
Table[RTLIB::CEIL_F128] = i64_i64_func_i64_i64;
Table[RTLIB::TRUNC_F32] = f32_func_f32;
Table[RTLIB::TRUNC_F64] = f64_func_f64;
Table[RTLIB::TRUNC_F128] = i64_i64_func_i64_i64;
Table[RTLIB::RINT_F32] = f32_func_f32;
Table[RTLIB::RINT_F64] = f64_func_f64;
Table[RTLIB::RINT_F128] = i64_i64_func_i64_i64;
Table[RTLIB::NEARBYINT_F32] = f32_func_f32;
Table[RTLIB::NEARBYINT_F64] = f64_func_f64;
Table[RTLIB::NEARBYINT_F128] = i64_i64_func_i64_i64;
Table[RTLIB::ROUND_F32] = f32_func_f32;
Table[RTLIB::ROUND_F64] = f64_func_f64;
Table[RTLIB::ROUND_F128] = i64_i64_func_i64_i64;
Table[RTLIB::ROUNDEVEN_F32] = f32_func_f32;
Table[RTLIB::ROUNDEVEN_F64] = f64_func_f64;
Table[RTLIB::ROUNDEVEN_F128] = i64_i64_func_i64_i64;
Table[RTLIB::LROUND_F32] = iPTR_func_f32;
Table[RTLIB::LROUND_F64] = iPTR_func_f64;
Table[RTLIB::LROUND_F128] = iPTR_func_i64_i64;
Table[RTLIB::LLROUND_F32] = i64_func_f32;
Table[RTLIB::LLROUND_F64] = i64_func_f64;
Table[RTLIB::LLROUND_F128] = i64_func_i64_i64;
Table[RTLIB::LRINT_F32] = iPTR_func_f32;
Table[RTLIB::LRINT_F64] = iPTR_func_f64;
Table[RTLIB::LRINT_F128] = iPTR_func_i64_i64;
Table[RTLIB::LLRINT_F32] = i64_func_f32;
Table[RTLIB::LLRINT_F64] = i64_func_f64;
Table[RTLIB::LLRINT_F128] = i64_func_i64_i64;
Table[RTLIB::FLOOR_F32] = f32_func_f32;
Table[RTLIB::FLOOR_F64] = f64_func_f64;
Table[RTLIB::FLOOR_F128] = i64_i64_func_i64_i64;
Table[RTLIB::COPYSIGN_F32] = f32_func_f32_f32;
Table[RTLIB::COPYSIGN_F64] = f64_func_f64_f64;
Table[RTLIB::COPYSIGN_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::FMIN_F32] = f32_func_f32_f32;
Table[RTLIB::FMIN_F64] = f64_func_f64_f64;
Table[RTLIB::FMIN_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::FMAX_F32] = f32_func_f32_f32;
Table[RTLIB::FMAX_F64] = f64_func_f64_f64;
Table[RTLIB::FMAX_F128] = i64_i64_func_i64_i64_i64_i64;
Table[RTLIB::LDEXP_F32] = f32_func_f32_i32;
Table[RTLIB::LDEXP_F64] = f64_func_f64_i32;
Table[RTLIB::LDEXP_F128] = i64_i64_func_i64_i64_i32;
Table[RTLIB::FREXP_F32] = f32_func_f32_i32;
Table[RTLIB::FREXP_F64] = f64_func_f64_i32;
Table[RTLIB::FREXP_F128] = i64_i64_func_i64_i64_i32;
// Conversion
// All F80 and PPCF128 routines are unsupported.
Table[RTLIB::FPEXT_F64_F128] = i64_i64_func_f64;
Table[RTLIB::FPEXT_F32_F128] = i64_i64_func_f32;
Table[RTLIB::FPEXT_F32_F64] = f64_func_f32;
Table[RTLIB::FPEXT_F16_F32] = f32_func_i16;
Table[RTLIB::FPROUND_F32_F16] = i16_func_f32;
Table[RTLIB::FPROUND_F64_F16] = i16_func_f64;
Table[RTLIB::FPROUND_F64_F32] = f32_func_f64;
Table[RTLIB::FPROUND_F128_F16] = i16_func_i64_i64;
Table[RTLIB::FPROUND_F128_F32] = f32_func_i64_i64;
Table[RTLIB::FPROUND_F128_F64] = f64_func_i64_i64;
Table[RTLIB::FPTOSINT_F32_I32] = i32_func_f32;
Table[RTLIB::FPTOSINT_F32_I64] = i64_func_f32;
Table[RTLIB::FPTOSINT_F32_I128] = i64_i64_func_f32;
Table[RTLIB::FPTOSINT_F64_I32] = i32_func_f64;
Table[RTLIB::FPTOSINT_F64_I64] = i64_func_f64;
Table[RTLIB::FPTOSINT_F64_I128] = i64_i64_func_f64;
Table[RTLIB::FPTOSINT_F128_I32] = i32_func_i64_i64;
Table[RTLIB::FPTOSINT_F128_I64] = i64_func_i64_i64;
Table[RTLIB::FPTOSINT_F128_I128] = i64_i64_func_i64_i64;
Table[RTLIB::FPTOUINT_F32_I32] = i32_func_f32;
Table[RTLIB::FPTOUINT_F32_I64] = i64_func_f32;
Table[RTLIB::FPTOUINT_F32_I128] = i64_i64_func_f32;
Table[RTLIB::FPTOUINT_F64_I32] = i32_func_f64;
Table[RTLIB::FPTOUINT_F64_I64] = i64_func_f64;
Table[RTLIB::FPTOUINT_F64_I128] = i64_i64_func_f64;
Table[RTLIB::FPTOUINT_F128_I32] = i32_func_i64_i64;
Table[RTLIB::FPTOUINT_F128_I64] = i64_func_i64_i64;
Table[RTLIB::FPTOUINT_F128_I128] = i64_i64_func_i64_i64;
Table[RTLIB::SINTTOFP_I32_F32] = f32_func_i32;
Table[RTLIB::SINTTOFP_I32_F64] = f64_func_i32;
Table[RTLIB::SINTTOFP_I32_F128] = i64_i64_func_i32;
Table[RTLIB::SINTTOFP_I64_F32] = f32_func_i64;
Table[RTLIB::SINTTOFP_I64_F64] = f64_func_i64;
Table[RTLIB::SINTTOFP_I64_F128] = i64_i64_func_i64;
Table[RTLIB::SINTTOFP_I128_F32] = f32_func_i64_i64;
Table[RTLIB::SINTTOFP_I128_F64] = f64_func_i64_i64;
Table[RTLIB::SINTTOFP_I128_F128] = i64_i64_func_i64_i64;
Table[RTLIB::UINTTOFP_I32_F32] = f32_func_i32;
Table[RTLIB::UINTTOFP_I32_F64] = f64_func_i64;
Table[RTLIB::UINTTOFP_I32_F128] = i64_i64_func_i32;
Table[RTLIB::UINTTOFP_I64_F32] = f32_func_i64;
Table[RTLIB::UINTTOFP_I64_F64] = f64_func_i64;
Table[RTLIB::UINTTOFP_I64_F128] = i64_i64_func_i64;
Table[RTLIB::UINTTOFP_I128_F32] = f32_func_i64_i64;
Table[RTLIB::UINTTOFP_I128_F64] = f64_func_i64_i64;
Table[RTLIB::UINTTOFP_I128_F128] = i64_i64_func_i64_i64;
// Comparison
// ALl F80 and PPCF128 routines are unsupported.
Table[RTLIB::OEQ_F32] = i32_func_f32_f32;
Table[RTLIB::OEQ_F64] = i32_func_f64_f64;
Table[RTLIB::OEQ_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::UNE_F32] = i32_func_f32_f32;
Table[RTLIB::UNE_F64] = i32_func_f64_f64;
Table[RTLIB::UNE_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::OGE_F32] = i32_func_f32_f32;
Table[RTLIB::OGE_F64] = i32_func_f64_f64;
Table[RTLIB::OGE_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::OLT_F32] = i32_func_f32_f32;
Table[RTLIB::OLT_F64] = i32_func_f64_f64;
Table[RTLIB::OLT_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::OLE_F32] = i32_func_f32_f32;
Table[RTLIB::OLE_F64] = i32_func_f64_f64;
Table[RTLIB::OLE_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::OGT_F32] = i32_func_f32_f32;
Table[RTLIB::OGT_F64] = i32_func_f64_f64;
Table[RTLIB::OGT_F128] = i32_func_i64_i64_i64_i64;
Table[RTLIB::UO_F32] = i32_func_f32_f32;
Table[RTLIB::UO_F64] = i32_func_f64_f64;
Table[RTLIB::UO_F128] = i32_func_i64_i64_i64_i64;
// Memory
Table[RTLIB::MEMCPY] = iPTR_func_iPTR_iPTR_iPTR;
Table[RTLIB::MEMSET] = iPTR_func_iPTR_i32_iPTR;
Table[RTLIB::MEMMOVE] = iPTR_func_iPTR_iPTR_iPTR;
// __stack_chk_fail
Table[RTLIB::STACKPROTECTOR_CHECK_FAIL] = func;
// Return address handling
Table[RTLIB::RETURN_ADDRESS] = iPTR_func_i32;
// Element-wise Atomic memory
// TODO: Fix these when we implement atomic support
Table[RTLIB::MEMCPY_ELEMENT_UNORDERED_ATOMIC_1] = unsupported;
Table[RTLIB::MEMCPY_ELEMENT_UNORDERED_ATOMIC_2] = unsupported;
Table[RTLIB::MEMCPY_ELEMENT_UNORDERED_ATOMIC_4] = unsupported;
Table[RTLIB::MEMCPY_ELEMENT_UNORDERED_ATOMIC_8] = unsupported;
Table[RTLIB::MEMCPY_ELEMENT_UNORDERED_ATOMIC_16] = unsupported;
Table[RTLIB::MEMMOVE_ELEMENT_UNORDERED_ATOMIC_1] = unsupported;
Table[RTLIB::MEMMOVE_ELEMENT_UNORDERED_ATOMIC_2] = unsupported;
Table[RTLIB::MEMMOVE_ELEMENT_UNORDERED_ATOMIC_4] = unsupported;
Table[RTLIB::MEMMOVE_ELEMENT_UNORDERED_ATOMIC_8] = unsupported;
Table[RTLIB::MEMMOVE_ELEMENT_UNORDERED_ATOMIC_16] = unsupported;
Table[RTLIB::MEMSET_ELEMENT_UNORDERED_ATOMIC_1] = unsupported;
Table[RTLIB::MEMSET_ELEMENT_UNORDERED_ATOMIC_2] = unsupported;
Table[RTLIB::MEMSET_ELEMENT_UNORDERED_ATOMIC_4] = unsupported;
Table[RTLIB::MEMSET_ELEMENT_UNORDERED_ATOMIC_8] = unsupported;
Table[RTLIB::MEMSET_ELEMENT_UNORDERED_ATOMIC_16] = unsupported;
// Atomic '__sync_*' libcalls.
// TODO: Fix these when we implement atomic support
Table[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1] = unsupported;
Table[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2] = unsupported;
Table[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4] = unsupported;
Table[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8] = unsupported;
Table[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_16] = unsupported;
Table[RTLIB::SYNC_LOCK_TEST_AND_SET_1] = unsupported;
Table[RTLIB::SYNC_LOCK_TEST_AND_SET_2] = unsupported;
Table[RTLIB::SYNC_LOCK_TEST_AND_SET_4] = unsupported;
Table[RTLIB::SYNC_LOCK_TEST_AND_SET_8] = unsupported;
Table[RTLIB::SYNC_LOCK_TEST_AND_SET_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_ADD_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_ADD_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_ADD_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_ADD_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_ADD_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_SUB_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_SUB_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_SUB_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_SUB_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_SUB_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_AND_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_AND_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_AND_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_AND_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_AND_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_OR_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_OR_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_OR_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_OR_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_OR_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_XOR_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_XOR_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_XOR_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_XOR_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_XOR_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_NAND_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_NAND_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_NAND_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_NAND_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_NAND_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MAX_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MAX_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MAX_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MAX_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MAX_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMAX_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMAX_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMAX_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMAX_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMAX_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MIN_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MIN_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MIN_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MIN_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_MIN_16] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMIN_1] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMIN_2] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMIN_4] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMIN_8] = unsupported;
Table[RTLIB::SYNC_FETCH_AND_UMIN_16] = unsupported;
// Atomic '__atomic_*' libcalls.
// TODO: Fix these when we implement atomic support
Table[RTLIB::ATOMIC_LOAD] = unsupported;
Table[RTLIB::ATOMIC_LOAD_1] = unsupported;
Table[RTLIB::ATOMIC_LOAD_2] = unsupported;
Table[RTLIB::ATOMIC_LOAD_4] = unsupported;
Table[RTLIB::ATOMIC_LOAD_8] = unsupported;
Table[RTLIB::ATOMIC_LOAD_16] = unsupported;
Table[RTLIB::ATOMIC_STORE] = unsupported;
Table[RTLIB::ATOMIC_STORE_1] = unsupported;
Table[RTLIB::ATOMIC_STORE_2] = unsupported;
Table[RTLIB::ATOMIC_STORE_4] = unsupported;
Table[RTLIB::ATOMIC_STORE_8] = unsupported;
Table[RTLIB::ATOMIC_STORE_16] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE_1] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE_2] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE_4] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE_8] = unsupported;
Table[RTLIB::ATOMIC_EXCHANGE_16] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE_1] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE_2] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE_4] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE_8] = unsupported;
Table[RTLIB::ATOMIC_COMPARE_EXCHANGE_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_ADD_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_ADD_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_ADD_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_ADD_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_ADD_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_SUB_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_SUB_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_SUB_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_SUB_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_SUB_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_AND_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_AND_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_AND_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_AND_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_AND_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_OR_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_OR_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_OR_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_OR_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_OR_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_XOR_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_XOR_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_XOR_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_XOR_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_XOR_16] = unsupported;
Table[RTLIB::ATOMIC_FETCH_NAND_1] = unsupported;
Table[RTLIB::ATOMIC_FETCH_NAND_2] = unsupported;
Table[RTLIB::ATOMIC_FETCH_NAND_4] = unsupported;
Table[RTLIB::ATOMIC_FETCH_NAND_8] = unsupported;
Table[RTLIB::ATOMIC_FETCH_NAND_16] = unsupported;
}
};
RuntimeLibcallSignatureTable &getRuntimeLibcallSignatures() {
static RuntimeLibcallSignatureTable RuntimeLibcallSignatures;
return RuntimeLibcallSignatures;
}
// Maps libcall names to their RTLIB::Libcall number. Builds the map in a
// constructor for use with a static variable
struct StaticLibcallNameMap {
StringMap<RTLIB::Libcall> Map;
StaticLibcallNameMap() {
static const std::pair<const char *, RTLIB::Libcall> NameLibcalls[] = {
#define HANDLE_LIBCALL(code, name) {(const char *)name, RTLIB::code},
#include "llvm/IR/RuntimeLibcalls.def"
#undef HANDLE_LIBCALL
};
for (const auto &NameLibcall : NameLibcalls) {
if (NameLibcall.first != nullptr &&
getRuntimeLibcallSignatures().Table[NameLibcall.second] !=
unsupported) {
assert(!Map.contains(NameLibcall.first) &&
"duplicate libcall names in name map");
Map[NameLibcall.first] = NameLibcall.second;
}
}
// Override the __gnu_f2h_ieee/__gnu_h2f_ieee names so that the f32 name is
// consistent with the f64 and f128 names.
Map["__extendhfsf2"] = RTLIB::FPEXT_F16_F32;
Map["__truncsfhf2"] = RTLIB::FPROUND_F32_F16;
Map["emscripten_return_address"] = RTLIB::RETURN_ADDRESS;
}
};
} // end anonymous namespace
void WebAssembly::getLibcallSignature(const WebAssemblySubtarget &Subtarget,
RTLIB::Libcall LC,
SmallVectorImpl<wasm::ValType> &Rets,
SmallVectorImpl<wasm::ValType> &Params) {
assert(Rets.empty());
assert(Params.empty());
wasm::ValType PtrTy =
Subtarget.hasAddr64() ? wasm::ValType::I64 : wasm::ValType::I32;
auto &Table = getRuntimeLibcallSignatures().Table;
switch (Table[LC]) {
case func:
break;
case f32_func_f32:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
break;
case f32_func_f64:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F64);
break;
case f32_func_i32:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::I32);
break;
case f32_func_i64:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::I64);
break;
case f32_func_i16:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::I32);
break;
case f64_func_f32:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F32);
break;
case f64_func_f64:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
break;
case f64_func_i32:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::I32);
break;
case f64_func_i64:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::I64);
break;
case i32_func_f32:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F32);
break;
case i32_func_f64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F64);
break;
case i32_func_i32:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case i64_func_f32:
Rets.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::F32);
break;
case i64_func_f64:
Rets.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::F64);
break;
case i64_func_i64:
Rets.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case f32_func_f32_f32:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
break;
case f32_func_f32_i32:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::I32);
break;
case f32_func_i64_i64:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case f64_func_f64_f64:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
break;
case f64_func_f64_i32:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::I32);
break;
case f64_func_i64_i64:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i16_func_f32:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F32);
break;
case i16_func_f64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F64);
break;
case i16_func_i64_i64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i8_func_i8_i8:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case func_f32_iPTR_iPTR:
Params.push_back(wasm::ValType::F32);
Params.push_back(PtrTy);
Params.push_back(PtrTy);
break;
case func_f64_iPTR_iPTR:
Params.push_back(wasm::ValType::F64);
Params.push_back(PtrTy);
Params.push_back(PtrTy);
break;
case i16_func_i16_i16:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case i32_func_f32_f32:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
break;
case i32_func_f64_f64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
break;
case i32_func_i32_i32:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case i32_func_i32_i32_iPTR:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
Params.push_back(PtrTy);
break;
case i64_func_i64_i64:
Rets.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_func_i64_i64_iPTR:
Rets.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(PtrTy);
break;
case i64_i64_func_f32:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::F32);
break;
case i64_i64_func_f64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::F64);
break;
case i16_i16_func_i16_i16:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I32);
Rets.push_back(wasm::ValType::I32);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case i32_i32_func_i32_i32:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I32);
Rets.push_back(wasm::ValType::I32);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);
break;
case i64_i64_func_i64_i64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_i64_func_i64_i64_i64_i64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_i64_func_i64_i64_i64_i64_iPTR:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(PtrTy);
break;
case i64_i64_i64_i64_func_i64_i64_i64_i64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_i64_func_i64_i64_i32:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I32);
break;
case iPTR_func_i32:
Rets.push_back(PtrTy);
Params.push_back(wasm::ValType::I32);
break;
case iPTR_func_iPTR_i32_iPTR:
Rets.push_back(PtrTy);
Params.push_back(PtrTy);
Params.push_back(wasm::ValType::I32);
Params.push_back(PtrTy);
break;
case iPTR_func_iPTR_iPTR_iPTR:
Rets.push_back(PtrTy);
Params.push_back(PtrTy);
Params.push_back(PtrTy);
Params.push_back(PtrTy);
break;
case f32_func_f32_f32_f32:
Rets.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
Params.push_back(wasm::ValType::F32);
break;
case f64_func_f64_f64_f64:
Rets.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
Params.push_back(wasm::ValType::F64);
break;
case func_i64_i64_iPTR_iPTR:
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(PtrTy);
Params.push_back(PtrTy);
break;
case i32_func_i64_i64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i32_func_i64_i64_i64_i64:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case iPTR_func_f32:
Rets.push_back(PtrTy);
Params.push_back(wasm::ValType::F32);
break;
case iPTR_func_f64:
Rets.push_back(PtrTy);
Params.push_back(wasm::ValType::F64);
break;
case iPTR_func_i64_i64:
Rets.push_back(PtrTy);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_i64_func_i64_i64_i64_i64_i64_i64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
Params.push_back(wasm::ValType::I64);
break;
case i64_i64_func_i32:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I32);
break;
case i64_i64_func_i64:
if (WebAssembly::canLowerMultivalueReturn(&Subtarget)) {
Rets.push_back(wasm::ValType::I64);
Rets.push_back(wasm::ValType::I64);
} else {
Params.push_back(PtrTy);
}
Params.push_back(wasm::ValType::I64);
break;
case unsupported:
llvm_unreachable("unsupported runtime library signature");
}
}
// TODO: If the RTLIB::Libcall-taking flavor of GetSignature remains unused
// other than here, just roll its logic into this version.
void WebAssembly::getLibcallSignature(const WebAssemblySubtarget &Subtarget,
StringRef Name,
SmallVectorImpl<wasm::ValType> &Rets,
SmallVectorImpl<wasm::ValType> &Params) {
static StaticLibcallNameMap LibcallNameMap;
auto &Map = LibcallNameMap.Map;
auto Val = Map.find(Name);
#ifndef NDEBUG
if (Val == Map.end()) {
auto Message =
std::string("unexpected runtime library name: ") + std::string(Name);
llvm_unreachable(Message.c_str());
}
#endif
return getLibcallSignature(Subtarget, Val->second, Rets, Params);
}
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