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manager to support the actual uses of it. =] When I ported instcombine to the new pass manager I discover that it didn't work because TLI wasn't available in the right places. This is a somewhat surprising and/or subtle aspect of the new pass manager design that came up before but I think is useful to be reminded of: While the new pass manager *allows* a function pass to query a module analysis, it requires that the module analysis is already run and cached prior to the function pass manager starting up, possibly with a 'require<foo>' style utility in the pass pipeline. This is an intentional hurdle because using a module analysis from a function pass *requires* that the module analysis is run prior to entering the function pass manager. Otherwise the other functions in the module could be in who-knows-what state, etc. A somewhat surprising consequence of this design decision (at least to me) is that you have to design a function pass that leverages a module analysis to do so as an optional feature. Even if that means your function pass does no work in the absence of the module analysis, you have to handle that possibility and remain conservatively correct. This is a natural consequence of things being able to invalidate the module analysis and us being unable to re-run it. And it's a generally good thing because it lets us reorder passes arbitrarily without breaking correctness, etc. This ends up causing problems in one case. What if we have a module analysis that is *definitionally* impossible to invalidate. In the places this might come up, the analysis is usually also definitionally trivial to run even while other transformation passes run on the module, regardless of the state of anything. And so, it follows that it is natural to have a hard requirement on such analyses from a function pass. It turns out, that TargetLibraryInfo is just such an analysis, and InstCombine has a hard requirement on it. The approach I've taken here is to produce an analysis that models this flexibility by making it both a module and a function analysis. This exposes the fact that it is in fact safe to compute at any point. We can even make it a valid CGSCC analysis at some point if that is useful. However, we don't want to have a copy of the actual target library info state for each function! This state is specific to the triple. The somewhat direct and blunt approach here is to turn TLI into a pimpl, with the state and mutators in the implementation class and the query routines primarily in the wrapper. Then the analysis can lazily construct and cache the implementations, keyed on the triple, and on-demand produce wrappers of them for each function. One minor annoyance is that we will end up with a wrapper for each function in the module. While this is a bit wasteful (one pointer per function) it seems tolerable. And it has the advantage of ensuring that we pay the absolute minimum synchronization cost to access this information should we end up with a nice parallel function pass manager in the future. We could look into trying to mark when analysis results are especially cheap to recompute and more eagerly GC-ing the cached results, or we could look at supporting a variant of analyses whose results are specifically *not* cached and expected to just be used and discarded by the consumer. Either way, these seem like incremental enhancements that should happen when we start profiling the memory and CPU usage of the new pass manager and not before. The other minor annoyance is that if we end up using the TLI in both a module pass and a function pass, those will be produced by two separate analyses, and thus will point to separate copies of the implementation state. While a minor issue, I dislike this and would like to find a way to cleanly allow a single analysis instance to be used across multiple IR unit managers. But I don't have a good solution to this today, and I don't want to hold up all of the work waiting to come up with one. This too seems like a reasonable thing to incrementally improve later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226981 91177308-0d34-0410-b5e6-96231b3b80d8
811 lines
22 KiB
C++
811 lines
22 KiB
C++
//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the TargetLibraryInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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const char* TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
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{
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"_IO_getc",
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"_IO_putc",
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"_ZdaPv",
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"_ZdaPvRKSt9nothrow_t",
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"_ZdaPvj",
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"_ZdaPvm",
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"_ZdlPv",
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"_ZdlPvRKSt9nothrow_t",
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"_ZdlPvj",
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"_ZdlPvm",
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"_Znaj",
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"_ZnajRKSt9nothrow_t",
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"_Znam",
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"_ZnamRKSt9nothrow_t",
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"_Znwj",
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"_ZnwjRKSt9nothrow_t",
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"_Znwm",
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"_ZnwmRKSt9nothrow_t",
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"__cospi",
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"__cospif",
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"__cxa_atexit",
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"__cxa_guard_abort",
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"__cxa_guard_acquire",
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"__cxa_guard_release",
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"__isoc99_scanf",
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"__isoc99_sscanf",
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"__memcpy_chk",
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"__memmove_chk",
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"__memset_chk",
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"__sincospi_stret",
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"__sincospif_stret",
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"__sinpi",
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"__sinpif",
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"__sqrt_finite",
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"__sqrtf_finite",
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"__sqrtl_finite",
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"__stpcpy_chk",
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"__stpncpy_chk",
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"__strcpy_chk",
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"__strdup",
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"__strncpy_chk",
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"__strndup",
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"__strtok_r",
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"abs",
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"access",
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"acos",
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"acosf",
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"acosh",
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"acoshf",
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"acoshl",
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"acosl",
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"asin",
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"asinf",
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"asinh",
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"asinhf",
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"asinhl",
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"asinl",
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"atan",
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"atan2",
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"atan2f",
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"atan2l",
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"atanf",
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"atanh",
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"atanhf",
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"atanhl",
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"atanl",
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"atof",
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"atoi",
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"atol",
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"atoll",
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"bcmp",
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"bcopy",
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"bzero",
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"calloc",
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"cbrt",
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"cbrtf",
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"cbrtl",
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"ceil",
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"ceilf",
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"ceill",
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"chmod",
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"chown",
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"clearerr",
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"closedir",
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"copysign",
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"copysignf",
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"copysignl",
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"cos",
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"cosf",
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"cosh",
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"coshf",
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"coshl",
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"cosl",
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"ctermid",
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"exp",
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"exp10",
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"exp10f",
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"exp10l",
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"exp2",
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"exp2f",
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"exp2l",
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"expf",
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"expl",
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"expm1",
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"expm1f",
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"expm1l",
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"fabs",
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"fabsf",
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"fabsl",
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"fclose",
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"fdopen",
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"feof",
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"ferror",
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"fflush",
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"ffs",
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"ffsl",
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"ffsll",
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"fgetc",
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"fgetpos",
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"fgets",
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"fileno",
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"fiprintf",
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"flockfile",
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"floor",
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"floorf",
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"floorl",
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"fmax",
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"fmaxf",
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"fmaxl",
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"fmin",
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"fminf",
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"fminl",
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"fmod",
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"fmodf",
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"fmodl",
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"fopen",
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"fopen64",
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"fprintf",
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"fputc",
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"fputs",
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"fread",
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"free",
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"frexp",
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"frexpf",
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"frexpl",
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"fscanf",
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"fseek",
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"fseeko",
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"fseeko64",
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"fsetpos",
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"fstat",
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"fstat64",
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"fstatvfs",
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"fstatvfs64",
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"ftell",
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"ftello",
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"ftello64",
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"ftrylockfile",
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"funlockfile",
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"fwrite",
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"getc",
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"getc_unlocked",
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"getchar",
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"getenv",
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"getitimer",
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"getlogin_r",
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"getpwnam",
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"gets",
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"gettimeofday",
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"htonl",
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"htons",
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"iprintf",
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"isascii",
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"isdigit",
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"labs",
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"lchown",
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"ldexp",
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"ldexpf",
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"ldexpl",
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"llabs",
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"log",
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"log10",
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"log10f",
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"log10l",
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"log1p",
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"log1pf",
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"log1pl",
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"log2",
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"log2f",
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"log2l",
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"logb",
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"logbf",
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"logbl",
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"logf",
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"logl",
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"lstat",
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"lstat64",
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"malloc",
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"memalign",
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"memccpy",
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"memchr",
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"memcmp",
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"memcpy",
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"memmove",
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"memrchr",
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"memset",
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"memset_pattern16",
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"mkdir",
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"mktime",
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"modf",
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"modff",
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"modfl",
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"nearbyint",
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"nearbyintf",
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"nearbyintl",
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"ntohl",
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"ntohs",
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"open",
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"open64",
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"opendir",
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"pclose",
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"perror",
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"popen",
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"posix_memalign",
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"pow",
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"powf",
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"powl",
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"pread",
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"printf",
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"putc",
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"putchar",
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"puts",
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"pwrite",
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"qsort",
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"read",
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"readlink",
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"realloc",
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"reallocf",
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"realpath",
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"remove",
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"rename",
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"rewind",
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"rint",
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"rintf",
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"rintl",
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"rmdir",
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"round",
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"roundf",
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"roundl",
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"scanf",
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"setbuf",
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"setitimer",
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"setvbuf",
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"sin",
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"sinf",
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"sinh",
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"sinhf",
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"sinhl",
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"sinl",
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"siprintf",
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"snprintf",
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"sprintf",
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"sqrt",
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"sqrtf",
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"sqrtl",
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"sscanf",
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"stat",
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"stat64",
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"statvfs",
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"statvfs64",
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"stpcpy",
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"stpncpy",
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"strcasecmp",
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"strcat",
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"strchr",
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"strcmp",
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"strcoll",
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"strcpy",
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"strcspn",
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"strdup",
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"strlen",
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"strncasecmp",
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"strncat",
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"strncmp",
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"strncpy",
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"strndup",
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"strnlen",
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"strpbrk",
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"strrchr",
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"strspn",
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"strstr",
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"strtod",
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"strtof",
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"strtok",
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"strtok_r",
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"strtol",
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"strtold",
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"strtoll",
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"strtoul",
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"strtoull",
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"strxfrm",
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"system",
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"tan",
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"tanf",
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"tanh",
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"tanhf",
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"tanhl",
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"tanl",
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"times",
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"tmpfile",
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"tmpfile64",
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"toascii",
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"trunc",
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"truncf",
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"truncl",
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"uname",
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"ungetc",
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"unlink",
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"unsetenv",
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"utime",
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"utimes",
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"valloc",
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"vfprintf",
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"vfscanf",
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"vprintf",
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"vscanf",
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"vsnprintf",
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"vsprintf",
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"vsscanf",
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"write"
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};
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static bool hasSinCosPiStret(const Triple &T) {
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// Only Darwin variants have _stret versions of combined trig functions.
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if (!T.isOSDarwin())
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return false;
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// The ABI is rather complicated on x86, so don't do anything special there.
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if (T.getArch() == Triple::x86)
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return false;
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if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
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return false;
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if (T.isiOS() && T.isOSVersionLT(7, 0))
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return false;
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return true;
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}
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/// initialize - Initialize the set of available library functions based on the
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/// specified target triple. This should be carefully written so that a missing
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/// target triple gets a sane set of defaults.
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static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
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const char **StandardNames) {
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#ifndef NDEBUG
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// Verify that the StandardNames array is in alphabetical order.
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for (unsigned F = 1; F < LibFunc::NumLibFuncs; ++F) {
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if (strcmp(StandardNames[F-1], StandardNames[F]) >= 0)
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llvm_unreachable("TargetLibraryInfoImpl function names must be sorted");
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}
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#endif // !NDEBUG
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// There are no library implementations of mempcy and memset for AMD gpus and
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// these can be difficult to lower in the backend.
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if (T.getArch() == Triple::r600 ||
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T.getArch() == Triple::amdgcn) {
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TLI.setUnavailable(LibFunc::memcpy);
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TLI.setUnavailable(LibFunc::memset);
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TLI.setUnavailable(LibFunc::memset_pattern16);
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return;
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}
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// memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
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if (T.isMacOSX()) {
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if (T.isMacOSXVersionLT(10, 5))
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TLI.setUnavailable(LibFunc::memset_pattern16);
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} else if (T.isiOS()) {
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if (T.isOSVersionLT(3, 0))
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TLI.setUnavailable(LibFunc::memset_pattern16);
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} else {
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TLI.setUnavailable(LibFunc::memset_pattern16);
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}
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if (!hasSinCosPiStret(T)) {
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TLI.setUnavailable(LibFunc::sinpi);
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TLI.setUnavailable(LibFunc::sinpif);
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TLI.setUnavailable(LibFunc::cospi);
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TLI.setUnavailable(LibFunc::cospif);
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TLI.setUnavailable(LibFunc::sincospi_stret);
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TLI.setUnavailable(LibFunc::sincospif_stret);
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}
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if (T.isMacOSX() && T.getArch() == Triple::x86 &&
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!T.isMacOSXVersionLT(10, 7)) {
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// x86-32 OSX has a scheme where fwrite and fputs (and some other functions
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// we don't care about) have two versions; on recent OSX, the one we want
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// has a $UNIX2003 suffix. The two implementations are identical except
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// for the return value in some edge cases. However, we don't want to
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// generate code that depends on the old symbols.
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TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
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TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
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}
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// iprintf and friends are only available on XCore and TCE.
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if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
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TLI.setUnavailable(LibFunc::iprintf);
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TLI.setUnavailable(LibFunc::siprintf);
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TLI.setUnavailable(LibFunc::fiprintf);
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}
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if (T.isOSWindows() && !T.isOSCygMing()) {
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// Win32 does not support long double
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TLI.setUnavailable(LibFunc::acosl);
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TLI.setUnavailable(LibFunc::asinl);
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TLI.setUnavailable(LibFunc::atanl);
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TLI.setUnavailable(LibFunc::atan2l);
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TLI.setUnavailable(LibFunc::ceill);
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TLI.setUnavailable(LibFunc::copysignl);
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TLI.setUnavailable(LibFunc::cosl);
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TLI.setUnavailable(LibFunc::coshl);
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TLI.setUnavailable(LibFunc::expl);
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TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
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TLI.setUnavailable(LibFunc::fabsl);
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TLI.setUnavailable(LibFunc::floorl);
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TLI.setUnavailable(LibFunc::fmaxl);
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TLI.setUnavailable(LibFunc::fminl);
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TLI.setUnavailable(LibFunc::fmodl);
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TLI.setUnavailable(LibFunc::frexpl);
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TLI.setUnavailable(LibFunc::ldexpf);
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TLI.setUnavailable(LibFunc::ldexpl);
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TLI.setUnavailable(LibFunc::logl);
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TLI.setUnavailable(LibFunc::modfl);
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TLI.setUnavailable(LibFunc::powl);
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TLI.setUnavailable(LibFunc::sinl);
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TLI.setUnavailable(LibFunc::sinhl);
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TLI.setUnavailable(LibFunc::sqrtl);
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TLI.setUnavailable(LibFunc::tanl);
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TLI.setUnavailable(LibFunc::tanhl);
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// Win32 only has C89 math
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TLI.setUnavailable(LibFunc::acosh);
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TLI.setUnavailable(LibFunc::acoshf);
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TLI.setUnavailable(LibFunc::acoshl);
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TLI.setUnavailable(LibFunc::asinh);
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TLI.setUnavailable(LibFunc::asinhf);
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TLI.setUnavailable(LibFunc::asinhl);
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TLI.setUnavailable(LibFunc::atanh);
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TLI.setUnavailable(LibFunc::atanhf);
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TLI.setUnavailable(LibFunc::atanhl);
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TLI.setUnavailable(LibFunc::cbrt);
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TLI.setUnavailable(LibFunc::cbrtf);
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TLI.setUnavailable(LibFunc::cbrtl);
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TLI.setUnavailable(LibFunc::exp2);
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TLI.setUnavailable(LibFunc::exp2f);
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TLI.setUnavailable(LibFunc::exp2l);
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TLI.setUnavailable(LibFunc::expm1);
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TLI.setUnavailable(LibFunc::expm1f);
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TLI.setUnavailable(LibFunc::expm1l);
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TLI.setUnavailable(LibFunc::log2);
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TLI.setUnavailable(LibFunc::log2f);
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TLI.setUnavailable(LibFunc::log2l);
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TLI.setUnavailable(LibFunc::log1p);
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TLI.setUnavailable(LibFunc::log1pf);
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TLI.setUnavailable(LibFunc::log1pl);
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TLI.setUnavailable(LibFunc::logb);
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TLI.setUnavailable(LibFunc::logbf);
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TLI.setUnavailable(LibFunc::logbl);
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TLI.setUnavailable(LibFunc::nearbyint);
|
|
TLI.setUnavailable(LibFunc::nearbyintf);
|
|
TLI.setUnavailable(LibFunc::nearbyintl);
|
|
TLI.setUnavailable(LibFunc::rint);
|
|
TLI.setUnavailable(LibFunc::rintf);
|
|
TLI.setUnavailable(LibFunc::rintl);
|
|
TLI.setUnavailable(LibFunc::round);
|
|
TLI.setUnavailable(LibFunc::roundf);
|
|
TLI.setUnavailable(LibFunc::roundl);
|
|
TLI.setUnavailable(LibFunc::trunc);
|
|
TLI.setUnavailable(LibFunc::truncf);
|
|
TLI.setUnavailable(LibFunc::truncl);
|
|
|
|
// Win32 provides some C99 math with mangled names
|
|
TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
|
|
|
|
if (T.getArch() == Triple::x86) {
|
|
// Win32 on x86 implements single-precision math functions as macros
|
|
TLI.setUnavailable(LibFunc::acosf);
|
|
TLI.setUnavailable(LibFunc::asinf);
|
|
TLI.setUnavailable(LibFunc::atanf);
|
|
TLI.setUnavailable(LibFunc::atan2f);
|
|
TLI.setUnavailable(LibFunc::ceilf);
|
|
TLI.setUnavailable(LibFunc::copysignf);
|
|
TLI.setUnavailable(LibFunc::cosf);
|
|
TLI.setUnavailable(LibFunc::coshf);
|
|
TLI.setUnavailable(LibFunc::expf);
|
|
TLI.setUnavailable(LibFunc::floorf);
|
|
TLI.setUnavailable(LibFunc::fminf);
|
|
TLI.setUnavailable(LibFunc::fmaxf);
|
|
TLI.setUnavailable(LibFunc::fmodf);
|
|
TLI.setUnavailable(LibFunc::logf);
|
|
TLI.setUnavailable(LibFunc::powf);
|
|
TLI.setUnavailable(LibFunc::sinf);
|
|
TLI.setUnavailable(LibFunc::sinhf);
|
|
TLI.setUnavailable(LibFunc::sqrtf);
|
|
TLI.setUnavailable(LibFunc::tanf);
|
|
TLI.setUnavailable(LibFunc::tanhf);
|
|
}
|
|
|
|
// Win32 does *not* provide provide these functions, but they are
|
|
// generally available on POSIX-compliant systems:
|
|
TLI.setUnavailable(LibFunc::access);
|
|
TLI.setUnavailable(LibFunc::bcmp);
|
|
TLI.setUnavailable(LibFunc::bcopy);
|
|
TLI.setUnavailable(LibFunc::bzero);
|
|
TLI.setUnavailable(LibFunc::chmod);
|
|
TLI.setUnavailable(LibFunc::chown);
|
|
TLI.setUnavailable(LibFunc::closedir);
|
|
TLI.setUnavailable(LibFunc::ctermid);
|
|
TLI.setUnavailable(LibFunc::fdopen);
|
|
TLI.setUnavailable(LibFunc::ffs);
|
|
TLI.setUnavailable(LibFunc::fileno);
|
|
TLI.setUnavailable(LibFunc::flockfile);
|
|
TLI.setUnavailable(LibFunc::fseeko);
|
|
TLI.setUnavailable(LibFunc::fstat);
|
|
TLI.setUnavailable(LibFunc::fstatvfs);
|
|
TLI.setUnavailable(LibFunc::ftello);
|
|
TLI.setUnavailable(LibFunc::ftrylockfile);
|
|
TLI.setUnavailable(LibFunc::funlockfile);
|
|
TLI.setUnavailable(LibFunc::getc_unlocked);
|
|
TLI.setUnavailable(LibFunc::getitimer);
|
|
TLI.setUnavailable(LibFunc::getlogin_r);
|
|
TLI.setUnavailable(LibFunc::getpwnam);
|
|
TLI.setUnavailable(LibFunc::gettimeofday);
|
|
TLI.setUnavailable(LibFunc::htonl);
|
|
TLI.setUnavailable(LibFunc::htons);
|
|
TLI.setUnavailable(LibFunc::lchown);
|
|
TLI.setUnavailable(LibFunc::lstat);
|
|
TLI.setUnavailable(LibFunc::memccpy);
|
|
TLI.setUnavailable(LibFunc::mkdir);
|
|
TLI.setUnavailable(LibFunc::ntohl);
|
|
TLI.setUnavailable(LibFunc::ntohs);
|
|
TLI.setUnavailable(LibFunc::open);
|
|
TLI.setUnavailable(LibFunc::opendir);
|
|
TLI.setUnavailable(LibFunc::pclose);
|
|
TLI.setUnavailable(LibFunc::popen);
|
|
TLI.setUnavailable(LibFunc::pread);
|
|
TLI.setUnavailable(LibFunc::pwrite);
|
|
TLI.setUnavailable(LibFunc::read);
|
|
TLI.setUnavailable(LibFunc::readlink);
|
|
TLI.setUnavailable(LibFunc::realpath);
|
|
TLI.setUnavailable(LibFunc::rmdir);
|
|
TLI.setUnavailable(LibFunc::setitimer);
|
|
TLI.setUnavailable(LibFunc::stat);
|
|
TLI.setUnavailable(LibFunc::statvfs);
|
|
TLI.setUnavailable(LibFunc::stpcpy);
|
|
TLI.setUnavailable(LibFunc::stpncpy);
|
|
TLI.setUnavailable(LibFunc::strcasecmp);
|
|
TLI.setUnavailable(LibFunc::strncasecmp);
|
|
TLI.setUnavailable(LibFunc::times);
|
|
TLI.setUnavailable(LibFunc::uname);
|
|
TLI.setUnavailable(LibFunc::unlink);
|
|
TLI.setUnavailable(LibFunc::unsetenv);
|
|
TLI.setUnavailable(LibFunc::utime);
|
|
TLI.setUnavailable(LibFunc::utimes);
|
|
TLI.setUnavailable(LibFunc::write);
|
|
|
|
// Win32 does *not* provide provide these functions, but they are
|
|
// specified by C99:
|
|
TLI.setUnavailable(LibFunc::atoll);
|
|
TLI.setUnavailable(LibFunc::frexpf);
|
|
TLI.setUnavailable(LibFunc::llabs);
|
|
}
|
|
|
|
switch (T.getOS()) {
|
|
case Triple::MacOSX:
|
|
// exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
|
|
// and their names are __exp10 and __exp10f. exp10l is not available on
|
|
// OS X or iOS.
|
|
TLI.setUnavailable(LibFunc::exp10l);
|
|
if (T.isMacOSXVersionLT(10, 9)) {
|
|
TLI.setUnavailable(LibFunc::exp10);
|
|
TLI.setUnavailable(LibFunc::exp10f);
|
|
} else {
|
|
TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
|
|
TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
|
|
}
|
|
break;
|
|
case Triple::IOS:
|
|
TLI.setUnavailable(LibFunc::exp10l);
|
|
if (T.isOSVersionLT(7, 0)) {
|
|
TLI.setUnavailable(LibFunc::exp10);
|
|
TLI.setUnavailable(LibFunc::exp10f);
|
|
} else {
|
|
TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
|
|
TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
|
|
}
|
|
break;
|
|
case Triple::Linux:
|
|
// exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
|
|
// buggy prior to glibc version 2.18. Until this version is widely deployed
|
|
// or we have a reasonable detection strategy, we cannot use exp10 reliably
|
|
// on Linux.
|
|
//
|
|
// Fall through to disable all of them.
|
|
default:
|
|
TLI.setUnavailable(LibFunc::exp10);
|
|
TLI.setUnavailable(LibFunc::exp10f);
|
|
TLI.setUnavailable(LibFunc::exp10l);
|
|
}
|
|
|
|
// ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
|
|
// Linux (GLIBC):
|
|
// http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
|
|
// http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsl.c
|
|
// http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
|
|
switch (T.getOS()) {
|
|
case Triple::Darwin:
|
|
case Triple::MacOSX:
|
|
case Triple::IOS:
|
|
case Triple::FreeBSD:
|
|
case Triple::Linux:
|
|
break;
|
|
default:
|
|
TLI.setUnavailable(LibFunc::ffsl);
|
|
}
|
|
|
|
// ffsll is available on at least FreeBSD and Linux (GLIBC):
|
|
// http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsll.c
|
|
// http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
|
|
switch (T.getOS()) {
|
|
case Triple::FreeBSD:
|
|
case Triple::Linux:
|
|
break;
|
|
default:
|
|
TLI.setUnavailable(LibFunc::ffsll);
|
|
}
|
|
|
|
// The following functions are available on at least Linux:
|
|
if (!T.isOSLinux()) {
|
|
TLI.setUnavailable(LibFunc::dunder_strdup);
|
|
TLI.setUnavailable(LibFunc::dunder_strtok_r);
|
|
TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
|
|
TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
|
|
TLI.setUnavailable(LibFunc::under_IO_getc);
|
|
TLI.setUnavailable(LibFunc::under_IO_putc);
|
|
TLI.setUnavailable(LibFunc::memalign);
|
|
TLI.setUnavailable(LibFunc::fopen64);
|
|
TLI.setUnavailable(LibFunc::fseeko64);
|
|
TLI.setUnavailable(LibFunc::fstat64);
|
|
TLI.setUnavailable(LibFunc::fstatvfs64);
|
|
TLI.setUnavailable(LibFunc::ftello64);
|
|
TLI.setUnavailable(LibFunc::lstat64);
|
|
TLI.setUnavailable(LibFunc::open64);
|
|
TLI.setUnavailable(LibFunc::stat64);
|
|
TLI.setUnavailable(LibFunc::statvfs64);
|
|
TLI.setUnavailable(LibFunc::tmpfile64);
|
|
}
|
|
}
|
|
|
|
TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
|
|
// Default to everything being available.
|
|
memset(AvailableArray, -1, sizeof(AvailableArray));
|
|
|
|
initialize(*this, Triple(), StandardNames);
|
|
}
|
|
|
|
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
|
|
// Default to everything being available.
|
|
memset(AvailableArray, -1, sizeof(AvailableArray));
|
|
|
|
initialize(*this, T, StandardNames);
|
|
}
|
|
|
|
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
|
|
: CustomNames(TLI.CustomNames) {
|
|
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
|
|
}
|
|
|
|
TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
|
|
: CustomNames(std::move(TLI.CustomNames)) {
|
|
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
|
|
AvailableArray);
|
|
}
|
|
|
|
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
|
|
CustomNames = TLI.CustomNames;
|
|
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
|
|
return *this;
|
|
}
|
|
|
|
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
|
|
CustomNames = std::move(TLI.CustomNames);
|
|
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
|
|
AvailableArray);
|
|
return *this;
|
|
}
|
|
|
|
namespace {
|
|
struct StringComparator {
|
|
/// Compare two strings and return true if LHS is lexicographically less than
|
|
/// RHS. Requires that RHS doesn't contain any zero bytes.
|
|
bool operator()(const char *LHS, StringRef RHS) const {
|
|
// Compare prefixes with strncmp. If prefixes match we know that LHS is
|
|
// greater or equal to RHS as RHS can't contain any '\0'.
|
|
return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
|
|
}
|
|
|
|
// Provided for compatibility with MSVC's debug mode.
|
|
bool operator()(StringRef LHS, const char *RHS) const { return LHS < RHS; }
|
|
bool operator()(StringRef LHS, StringRef RHS) const { return LHS < RHS; }
|
|
bool operator()(const char *LHS, const char *RHS) const {
|
|
return std::strcmp(LHS, RHS) < 0;
|
|
}
|
|
};
|
|
}
|
|
|
|
bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
|
|
LibFunc::Func &F) const {
|
|
const char **Start = &StandardNames[0];
|
|
const char **End = &StandardNames[LibFunc::NumLibFuncs];
|
|
|
|
// Filter out empty names and names containing null bytes, those can't be in
|
|
// our table.
|
|
if (funcName.empty() || funcName.find('\0') != StringRef::npos)
|
|
return false;
|
|
|
|
// Check for \01 prefix that is used to mangle __asm declarations and
|
|
// strip it if present.
|
|
if (funcName.front() == '\01')
|
|
funcName = funcName.substr(1);
|
|
const char **I = std::lower_bound(Start, End, funcName, StringComparator());
|
|
if (I != End && *I == funcName) {
|
|
F = (LibFunc::Func)(I - Start);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void TargetLibraryInfoImpl::disableAllFunctions() {
|
|
memset(AvailableArray, 0, sizeof(AvailableArray));
|
|
}
|
|
|
|
TargetLibraryInfo TargetLibraryAnalysis::run(Module &M) {
|
|
if (PresetInfoImpl)
|
|
return TargetLibraryInfo(*PresetInfoImpl);
|
|
|
|
return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
|
|
}
|
|
|
|
TargetLibraryInfo TargetLibraryAnalysis::run(Function &F) {
|
|
if (PresetInfoImpl)
|
|
return TargetLibraryInfo(*PresetInfoImpl);
|
|
|
|
return TargetLibraryInfo(
|
|
lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
|
|
}
|
|
|
|
TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(Triple T) {
|
|
std::unique_ptr<TargetLibraryInfoImpl> &Impl =
|
|
Impls[T.normalize()];
|
|
if (!Impl)
|
|
Impl.reset(new TargetLibraryInfoImpl(T));
|
|
|
|
return *Impl;
|
|
}
|
|
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
|
|
: ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
|
|
: ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
|
|
const TargetLibraryInfoImpl &TLIImpl)
|
|
: ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
char TargetLibraryAnalysis::PassID;
|
|
|
|
// Register the basic pass.
|
|
INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
|
|
"Target Library Information", false, true)
|
|
char TargetLibraryInfoWrapperPass::ID = 0;
|
|
|
|
void TargetLibraryInfoWrapperPass::anchor() {}
|