Add new getLibFunc method to TargetLibraryInfo.
This just provides a way to look up a LibFunc::Func enum value for a
function name. Alphabetize the enums and function names so we can use a
binary search.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161231 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetLibraryInfo.cpp b/lib/Target/TargetLibraryInfo.cpp
index 7e9cf12..8e215a7 100644
--- a/lib/Target/TargetLibraryInfo.cpp
+++ b/lib/Target/TargetLibraryInfo.cpp
@@ -24,65 +24,70 @@
const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
{
+ "__cxa_atexit",
+ "__cxa_guard_abort",
+ "__cxa_guard_acquire",
+ "__cxa_guard_release",
+ "__memcpy_chk",
"acos",
- "acosl",
"acosf",
+ "acosl",
"asin",
- "asinl",
"asinf",
+ "asinl",
"atan",
- "atanl",
- "atanf",
"atan2",
- "atan2l",
"atan2f",
+ "atan2l",
+ "atanf",
+ "atanl",
"ceil",
- "ceill",
"ceilf",
+ "ceill",
"copysign",
"copysignf",
"copysignl",
"cos",
- "cosl",
"cosf",
"cosh",
- "coshl",
"coshf",
+ "coshl",
+ "cosl",
"exp",
- "expl",
- "expf",
"exp2",
- "exp2l",
"exp2f",
+ "exp2l",
+ "expf",
+ "expl",
"expm1",
- "expm1l",
"expm1f",
+ "expm1l",
"fabs",
- "fabsl",
"fabsf",
- "floor",
- "floorl",
- "floorf",
+ "fabsl",
"fiprintf",
+ "floor",
+ "floorf",
+ "floorl",
"fmod",
- "fmodl",
"fmodf",
+ "fmodl",
"fputc",
"fputs",
"fwrite",
"iprintf",
"log",
- "logl",
- "logf",
- "log2",
- "log2l",
- "log2f",
"log10",
- "log10l",
"log10f",
+ "log10l",
"log1p",
- "log1pl",
"log1pf",
+ "log1pl",
+ "log2",
+ "log2f",
+ "log2l",
+ "logf",
+ "logl",
"memchr",
"memcmp",
"memcpy",
@@ -104,15 +109,15 @@
"roundf",
"roundl",
"sin",
- "sinl",
"sinf",
"sinh",
- "sinhl",
"sinhf",
+ "sinhl",
+ "sinl",
"siprintf",
"sqrt",
- "sqrtl",
"sqrtf",
+ "sqrtl",
"strcat",
"strchr",
"strcpy",
@@ -122,27 +127,30 @@
"strncpy",
"strnlen",
"tan",
- "tanl",
"tanf",
"tanh",
- "tanhl",
"tanhf",
+ "tanhl",
+ "tanl",
"trunc",
"truncf",
- "truncl",
- "__cxa_atexit",
- "__cxa_guard_abort",
- "__cxa_guard_acquire",
- "__cxa_guard_release",
- "__memcpy_chk"
+ "truncl"
};
/// initialize - Initialize the set of available library functions based on the
/// specified target triple. This should be carefully written so that a missing
/// target triple gets a sane set of defaults.
-static void initialize(TargetLibraryInfo &TLI, const Triple &T) {
+static void initialize(TargetLibraryInfo &TLI, const Triple &T,
+ const char **StandardNames) {
initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
+#ifndef NDEBUG
+ // Verify that the StandardNames array is in alphabetical order.
+ for (unsigned F = 1; F < LibFunc::NumLibFuncs; ++F) {
+ if (strcmp(StandardNames[F-1], StandardNames[F]) >= 0)
+ llvm_unreachable("TargetLibraryInfo function names must be sorted");
+ }
+#endif // !NDEBUG
// memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later.
if (T.isMacOSX()) {
@@ -254,14 +262,14 @@
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
- initialize(*this, Triple());
+ initialize(*this, Triple(), StandardNames);
}
TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
- initialize(*this, T);
+ initialize(*this, T, StandardNames);
}
TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
@@ -270,6 +278,17 @@
CustomNames = TLI.CustomNames;
}
+bool TargetLibraryInfo::getLibFunc(StringRef funcName,
+ LibFunc::Func &F) const {
+ const char **Start = &StandardNames[0];
+ const char **End = &StandardNames[LibFunc::NumLibFuncs];
+ const char **I = std::lower_bound(Start, End, funcName);
+ if (I != End && *I == funcName) {
+ F = (LibFunc::Func)(I - Start);
+ return true;
+ }
+ return false;
+}
/// disableAllFunctions - This disables all builtins, which is used for options
/// like -fno-builtin.