38101b4e95
This patch adds support for:
* `-S` in Flang's compiler and frontend drivers,
and implements:
* `-emit-obj` in Flang's frontend driver and `-c` in Flang's compiler
driver (this is consistent with Clang).
(these options were already available before, but only as placeholders).
The semantics of these options in Clang and Flang are identical.
The `EmitObjAction` frontend action is renamed as `BackendAction`. This
new name more accurately reflects the fact that this action will
primarily run the code-gen/backend pipeline in LLVM. It also makes more
sense as an action implementing both `-emit-obj` and `-S` (originally,
it was just `-emit-obj`).
`tripleName` from FirContext.cpp is deleted and, when a target triple is
required, `mlir::LLVM::LLVMDialect::getTargetTripleAttrName()` is used
instead. In practice, this means that `fir.triple` is replaced with
`llvm.target_triple`. The former was effectively ignored. The latter is
used when lowering from the LLVM dialect in MLIR to LLVM IR (i.e. it's
embedded in the generated LLVM IR module). The driver can then re-use
it when configuring the backend. With this change, the LLVM IR files
generated by e.g. `tco` will from now on contain the correct target
triple.
The code-gen.f90 test is replaced with code-gen-x86.f90 and
code-gen-aarch64.f90. With 2 seperate files we can verify that
`--target` is correctly taken into account. LIT configuration is updated
to enable e.g.:
```
! REQUIRES: aarch64-registered-target
```
Differential Revision: https://reviews.llvm.org/D120568
122 lines
4.8 KiB
Python
122 lines
4.8 KiB
Python
# -*- Python -*-
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import os
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import platform
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import re
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import subprocess
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import sys
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import lit.formats
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import lit.util
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from lit.llvm import llvm_config
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from lit.llvm.subst import ToolSubst
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from lit.llvm.subst import FindTool
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# Configuration file for the 'lit' test runner.
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# name: The name of this test suite.
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config.name = 'Flang'
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# testFormat: The test format to use to interpret tests.
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#
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# For now we require '&&' between commands, until they get globally killed and
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# the test runner updated.
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config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
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# suffixes: A list of file extensions to treat as test files.
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config.suffixes = ['.c', '.cpp', '.f', '.F', '.ff', '.FOR', '.for', '.f77', '.f90', '.F90',
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'.ff90', '.f95', '.F95', '.ff95', '.fpp', '.FPP', '.cuf'
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'.CUF', '.f18', '.F18', '.fir', '.f03', '.F03', '.f08', '.F08']
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config.substitutions.append(('%PATH%', config.environment['PATH']))
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config.substitutions.append(('%llvmshlibdir', config.llvm_shlib_dir))
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config.substitutions.append(('%pluginext', config.llvm_plugin_ext))
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llvm_config.use_default_substitutions()
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# ask llvm-config about asserts
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llvm_config.feature_config(
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[('--assertion-mode', {'ON': 'asserts'})])
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# Targets
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config.targets = frozenset(config.targets_to_build.split())
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for arch in config.targets_to_build.split():
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config.available_features.add(arch.lower() + '-registered-target')
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# excludes: A list of directories to exclude from the testsuite. The 'Inputs'
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# subdirectories contain auxiliary inputs for various tests in their parent
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# directories.
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config.excludes = ['Inputs', 'CMakeLists.txt', 'README.txt', 'LICENSE.txt']
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# If the flang examples are built, add examples to the config
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if config.flang_examples:
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config.available_features.add('examples')
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# Plugins (loadable modules)
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if config.has_plugins:
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config.available_features.add('plugins')
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# test_source_root: The root path where tests are located.
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config.test_source_root = os.path.dirname(__file__)
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# test_exec_root: The root path where tests should be run.
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config.test_exec_root = os.path.join(config.flang_obj_root, 'test')
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# Tweak the PATH to include the tools dir.
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llvm_config.with_environment('PATH', config.flang_tools_dir, append_path=True)
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llvm_config.with_environment('PATH', config.llvm_tools_dir, append_path=True)
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if config.flang_standalone_build:
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# For builds with FIR, set path for tco and enable related tests
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if config.flang_llvm_tools_dir != "":
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config.available_features.add('fir')
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if config.llvm_tools_dir != config.flang_llvm_tools_dir:
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llvm_config.with_environment('PATH', config.flang_llvm_tools_dir, append_path=True)
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# For each occurrence of a flang tool name, replace it with the full path to
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# the build directory holding that tool.
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tools = [
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ToolSubst('%flang', command=FindTool('flang-new'), unresolved='fatal'),
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ToolSubst('%flang_fc1', command=FindTool('flang-new'), extra_args=['-fc1'],
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unresolved='fatal')]
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# Flang has several unimplemented features. TODO messages are used to mark and fail if these
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# features are exercised. TODOs exit with an error in non-assert builds but in assert builds
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# it aborts. To catch aborts, the `--crash` option for the `not` command has to be used.
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if 'asserts' in config.available_features:
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tools.append(ToolSubst('%not_todo_cmd', command=FindTool('not'), extra_args=['--crash'],
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unresolved='fatal'))
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else:
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tools.append(ToolSubst('%not_todo_cmd', command=FindTool('not'), unresolved='fatal'))
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# Define some variables to help us test that the flang runtime doesn't depend on
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# the C++ runtime libraries. For this we need a C compiler. If for some reason
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# we don't have one, we can just disable the test.
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if config.cc:
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libruntime = os.path.join(config.flang_lib_dir, 'libFortranRuntime.a')
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libdecimal = os.path.join(config.flang_lib_dir, 'libFortranDecimal.a')
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include = os.path.join(config.flang_src_dir, 'include')
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if os.path.isfile(libruntime) and os.path.isfile(libdecimal) and os.path.isdir(include):
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config.available_features.add('c-compiler')
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tools.append(ToolSubst('%cc', command=config.cc, unresolved='fatal'))
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tools.append(ToolSubst('%libruntime', command=libruntime,
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unresolved='fatal'))
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tools.append(ToolSubst('%libdecimal', command=libdecimal,
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unresolved='fatal'))
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tools.append(ToolSubst('%include', command=include,
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unresolved='fatal'))
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# Add all the tools and their substitutions (if applicable). Use the search paths provided for
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# finding the tools.
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if config.flang_standalone_build:
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llvm_config.add_tool_substitutions(tools, [config.flang_llvm_tools_dir, config.llvm_tools_dir])
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else:
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llvm_config.add_tool_substitutions(tools, config.llvm_tools_dir)
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# Enable libpgmath testing
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result = lit_config.params.get("LIBPGMATH")
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if result:
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config.environment["LIBPGMATH"] = True
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