mirror of
https://github.com/c64scene-ar/llvm-6502.git
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8e0d1c03ca
This disables malloc-specific optimization when -fno-builtin (or -ffreestanding) is specified. This has been a problem for a long time but became more severe with the recent memory builtin improvements. Since the memory builtin functions are used everywhere, this required passing TLI in many places. This means that functions that now have an optional TLI argument, like RecursivelyDeleteTriviallyDeadFunctions, won't remove dead mallocs anymore if the TLI argument is missing. I've updated most passes to do the right thing. Fixes PR13694 and probably others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162841 91177308-0d34-0410-b5e6-96231b3b80d8
353 lines
9.5 KiB
C++
353 lines
9.5 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/Target/TargetLibraryInfo.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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// Register the default implementation.
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INITIALIZE_PASS(TargetLibraryInfo, "targetlibinfo",
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"Target Library Information", false, true)
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char TargetLibraryInfo::ID = 0;
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void TargetLibraryInfo::anchor() { }
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const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
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{
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"_ZdaPv",
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"_ZdlPv",
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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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"__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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"__memcpy_chk",
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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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"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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"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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"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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"fiprintf",
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"floor",
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"floorf",
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"floorl",
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"fmod",
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"fmodf",
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"fmodl",
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"fputc",
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"fputs",
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"free",
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"fwrite",
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"iprintf",
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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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"malloc",
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"memchr",
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"memcmp",
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"memcpy",
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"memmove",
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"memset",
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"memset_pattern16",
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"nearbyint",
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"nearbyintf",
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"nearbyintl",
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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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"putchar",
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"puts",
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"realloc",
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"reallocf",
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"rint",
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"rintf",
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"rintl",
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"round",
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"roundf",
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"roundl",
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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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"sqrt",
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"sqrtf",
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"sqrtl",
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"strcat",
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"strchr",
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"strcpy",
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"strdup",
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"strlen",
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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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"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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"trunc",
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"truncf",
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"truncl",
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"valloc"
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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(TargetLibraryInfo &TLI, const Triple &T,
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const char **StandardNames) {
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initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
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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("TargetLibraryInfo function names must be sorted");
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}
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#endif // !NDEBUG
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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.getOS() == Triple::IOS) {
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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 (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.getOS() == Triple::Win32) {
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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::fmodl);
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TLI.setUnavailable(LibFunc::logl);
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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::exp10);
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TLI.setUnavailable(LibFunc::exp10f);
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TLI.setUnavailable(LibFunc::exp10l);
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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);
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TLI.setUnavailable(LibFunc::nearbyintf);
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TLI.setUnavailable(LibFunc::nearbyintl);
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TLI.setUnavailable(LibFunc::rint);
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TLI.setUnavailable(LibFunc::rintf);
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TLI.setUnavailable(LibFunc::rintl);
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TLI.setUnavailable(LibFunc::round);
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TLI.setUnavailable(LibFunc::roundf);
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TLI.setUnavailable(LibFunc::roundl);
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TLI.setUnavailable(LibFunc::trunc);
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TLI.setUnavailable(LibFunc::truncf);
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TLI.setUnavailable(LibFunc::truncl);
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// Win32 provides some C99 math with mangled names
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TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
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if (T.getArch() == Triple::x86) {
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// Win32 on x86 implements single-precision math functions as macros
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TLI.setUnavailable(LibFunc::acosf);
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TLI.setUnavailable(LibFunc::asinf);
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TLI.setUnavailable(LibFunc::atanf);
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TLI.setUnavailable(LibFunc::atan2f);
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TLI.setUnavailable(LibFunc::ceilf);
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TLI.setUnavailable(LibFunc::copysignf);
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TLI.setUnavailable(LibFunc::cosf);
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TLI.setUnavailable(LibFunc::coshf);
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TLI.setUnavailable(LibFunc::expf);
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TLI.setUnavailable(LibFunc::floorf);
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TLI.setUnavailable(LibFunc::fmodf);
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TLI.setUnavailable(LibFunc::logf);
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TLI.setUnavailable(LibFunc::powf);
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TLI.setUnavailable(LibFunc::sinf);
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TLI.setUnavailable(LibFunc::sinhf);
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TLI.setUnavailable(LibFunc::sqrtf);
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TLI.setUnavailable(LibFunc::tanf);
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TLI.setUnavailable(LibFunc::tanhf);
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}
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}
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}
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TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) {
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// Default to everything being available.
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memset(AvailableArray, -1, sizeof(AvailableArray));
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initialize(*this, Triple(), StandardNames);
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}
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TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
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// Default to everything being available.
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memset(AvailableArray, -1, sizeof(AvailableArray));
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initialize(*this, T, StandardNames);
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}
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TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
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: ImmutablePass(ID) {
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memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
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CustomNames = TLI.CustomNames;
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}
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bool TargetLibraryInfo::getLibFunc(StringRef funcName,
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LibFunc::Func &F) const {
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const char **Start = &StandardNames[0];
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const char **End = &StandardNames[LibFunc::NumLibFuncs];
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const char **I = std::lower_bound(Start, End, funcName);
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if (I != End && *I == funcName) {
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F = (LibFunc::Func)(I - Start);
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return true;
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}
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return false;
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}
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/// disableAllFunctions - This disables all builtins, which is used for options
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/// like -fno-builtin.
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void TargetLibraryInfo::disableAllFunctions() {
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memset(AvailableArray, 0, sizeof(AvailableArray));
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}
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