Add support for custom names for library functions in TargetLibraryInfo. Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom
names for fwrite and fputs.
Fixes <rdar://problem/9815881>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144876 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetLibraryInfo.cpp b/lib/Target/TargetLibraryInfo.cpp
index 709dfd2..aa2e014 100644
--- a/lib/Target/TargetLibraryInfo.cpp
+++ b/lib/Target/TargetLibraryInfo.cpp
@@ -20,6 +20,19 @@
"Target Library Information", false, true)
char TargetLibraryInfo::ID = 0;
+const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
+ {
+ "memset",
+ "memcpy",
+ "memmove",
+ "memset_pattern16",
+ "iprintf",
+ "siprintf",
+ "fiprintf",
+ "fwrite",
+ "fputs"
+ };
+
/// 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.
@@ -38,6 +51,17 @@
TLI.setUnavailable(LibFunc::memset_pattern16);
}
+ if (T.isMacOSX() && T.getArch() == Triple::x86 &&
+ !T.isMacOSXVersionLT(10, 7)) {
+ // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
+ // we don't care about) have two versions; on recent OSX, the one we want
+ // has a $UNIX2003 suffix. The two implementations are identical except
+ // for the return value in some edge cases. However, we don't want to
+ // generate code that depends on the old symbols.
+ TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
+ TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
+ }
+
// iprintf and friends are only available on XCore and TCE.
if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
TLI.setUnavailable(LibFunc::iprintf);
@@ -64,6 +88,7 @@
TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
: ImmutablePass(ID) {
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
+ CustomNames = TLI.CustomNames;
}