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/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*/
/* based on Marek's patch to lp_bld_misc.cpp */
// Workaround http://llvm.org/PR23628
#pragma push_macro("DEBUG")
#undef DEBUG
#include "ac_binary.h"
#include "ac_llvm_util.h"
#include <llvm-c/Core.h>
#include <llvm/Target/TargetMachine.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/Analysis/TargetLibraryInfo.h>
#include <llvm/Transforms/IPO.h>
#include <llvm/IR/LegacyPassManager.h>
#if HAVE_LLVM < 0x0700
#include "llvm/Support/raw_ostream.h"
#endif
void ac_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes)
{
llvm::Argument *A = llvm::unwrap<llvm::Argument>(val);
A->addAttr(llvm::Attribute::getWithDereferenceableBytes(A->getContext(), bytes));
}
bool ac_is_sgpr_param(LLVMValueRef arg)
{
llvm::Argument *A = llvm::unwrap<llvm::Argument>(arg);
llvm::AttributeList AS = A->getParent()->getAttributes();
unsigned ArgNo = A->getArgNo();
return AS.hasAttribute(ArgNo + 1, llvm::Attribute::InReg);
}
LLVMValueRef ac_llvm_get_called_value(LLVMValueRef call)
{
return LLVMGetCalledValue(call);
}
bool ac_llvm_is_function(LLVMValueRef v)
{
return LLVMGetValueKind(v) == LLVMFunctionValueKind;
}
LLVMModuleRef ac_create_module(LLVMTargetMachineRef tm, LLVMContextRef ctx)
{
llvm::TargetMachine *TM = reinterpret_cast<llvm::TargetMachine*>(tm);
LLVMModuleRef module = LLVMModuleCreateWithNameInContext("mesa-shader", ctx);
llvm::unwrap(module)->setTargetTriple(TM->getTargetTriple().getTriple());
llvm::unwrap(module)->setDataLayout(TM->createDataLayout());
return module;
}
LLVMBuilderRef ac_create_builder(LLVMContextRef ctx,
enum ac_float_mode float_mode)
{
LLVMBuilderRef builder = LLVMCreateBuilderInContext(ctx);
llvm::FastMathFlags flags;
switch (float_mode) {
case AC_FLOAT_MODE_DEFAULT:
break;
case AC_FLOAT_MODE_NO_SIGNED_ZEROS_FP_MATH:
flags.setNoSignedZeros();
llvm::unwrap(builder)->setFastMathFlags(flags);
break;
case AC_FLOAT_MODE_UNSAFE_FP_MATH:
flags.setFast();
llvm::unwrap(builder)->setFastMathFlags(flags);
break;
}
return builder;
}
LLVMTargetLibraryInfoRef
ac_create_target_library_info(const char *triple)
{
return reinterpret_cast<LLVMTargetLibraryInfoRef>(new llvm::TargetLibraryInfoImpl(llvm::Triple(triple)));
}
void
ac_dispose_target_library_info(LLVMTargetLibraryInfoRef library_info)
{
delete reinterpret_cast<llvm::TargetLibraryInfoImpl *>(library_info);
}
/* The LLVM compiler is represented as a pass manager containing passes for
* optimizations, instruction selection, and code generation.
*/
struct ac_compiler_passes {
ac_compiler_passes(): ostream(code_string) {}
llvm::SmallString<0> code_string; /* ELF shader binary */
llvm::raw_svector_ostream ostream; /* stream for appending data to the binary */
llvm::legacy::PassManager passmgr; /* list of passes */
};
struct ac_compiler_passes *ac_create_llvm_passes(LLVMTargetMachineRef tm)
{
struct ac_compiler_passes *p = new ac_compiler_passes();
if (!p)
return NULL;
llvm::TargetMachine *TM = reinterpret_cast<llvm::TargetMachine*>(tm);
if (TM->addPassesToEmitFile(p->passmgr, p->ostream,
#if HAVE_LLVM >= 0x0700
nullptr,
#endif
llvm::TargetMachine::CGFT_ObjectFile)) {
fprintf(stderr, "amd: TargetMachine can't emit a file of this type!\n");
delete p;
return NULL;
}
return p;
}
void ac_destroy_llvm_passes(struct ac_compiler_passes *p)
{
delete p;
}
/* This returns false on failure. */
bool ac_compile_module_to_binary(struct ac_compiler_passes *p, LLVMModuleRef module,
struct ac_shader_binary *binary)
{
p->passmgr.run(*llvm::unwrap(module));
llvm::StringRef data = p->ostream.str();
bool success = ac_elf_read(data.data(), data.size(), binary);
p->code_string = ""; /* release the ELF shader binary */
if (!success)
fprintf(stderr, "amd: cannot read an ELF shader binary\n");
return success;
}
void ac_llvm_add_barrier_noop_pass(LLVMPassManagerRef passmgr)
{
llvm::unwrap(passmgr)->add(llvm::createBarrierNoopPass());
}
void ac_enable_global_isel(LLVMTargetMachineRef tm)
{
#if HAVE_LLVM >= 0x0700
reinterpret_cast<llvm::TargetMachine*>(tm)->setGlobalISel(true);
#endif
}
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