Add more functions to the target library information.

I discovered a few more missing functions while migrating optimizations
from the simplify-libcalls pass to the instcombine (I already added some
in r167659).

llvm-svn: 168501

llvm/include/llvm/Target/TargetLibraryInfo.h

@@ -49,6 +49,8 @@ namespace llvm {
       cxa_guard_release,
       /// void *__memcpy_chk(void *s1, const void *s2, size_t n, size_t s1size);
       memcpy_chk,
+      /// int abs(int j);
+      abs,
       /// double acos(double x);
       acos,
       /// float acosf(float x);
@@ -153,6 +155,12 @@ namespace llvm {
       fabsf,
       /// long double fabsl(long double x);
       fabsl,
+      /// int ffs(int i);
+      ffs,
+      /// int ffsl(long int i);
+      ffsl,
+      /// int ffsll(long long int i);
+      ffsll,
       /// int fiprintf(FILE *stream, const char *format, ...);
       fiprintf,
       /// double floor(double x);
@@ -167,6 +175,8 @@ namespace llvm {
       fmodf,
       /// long double fmodl(long double x, long double y);
       fmodl,
+      /// int fprintf(FILE *stream, const char *format, ...);
+      fprintf,
       /// int fputc(int c, FILE *stream);
       fputc,
       /// int fputs(const char *s, FILE *stream);
@@ -178,6 +188,14 @@ namespace llvm {
       fwrite,
       /// int iprintf(const char *format, ...);
       iprintf,
+      /// int isascii(int c);
+      isascii,
+      /// int isdigit(int c);
+      isdigit,
+      /// long int labs(long int j);
+      labs,
+      /// long long int llabs(long long int j);
+      llabs,
       /// double log(double x);
       log,
       /// double log10(double x);
@@ -236,6 +254,8 @@ namespace llvm {
       powf,
       /// long double powl(long double x, long double y);
       powl,
+      /// int printf(const char *format, ...);
+      printf,
       /// int putchar(int c);
       putchar,
       /// int puts(const char *s);
@@ -270,6 +290,8 @@ namespace llvm {
       sinl,
       /// int siprintf(char *str, const char *format, ...);
       siprintf,
+      /// int sprintf(char *str, const char *format, ...);
+      sprintf,
       /// double sqrt(double x);
       sqrt,
       /// float sqrtf(float x);
@@ -337,6 +359,8 @@ namespace llvm {
       tanhl,
       /// long double tanl(long double x);
       tanl,
+      /// int toascii(int c);
+      toascii,
       /// double trunc(double x);
       trunc,
       /// float truncf(float x);

llvm/lib/Target/TargetLibraryInfo.cpp

@@ -39,6 +39,7 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "__cxa_guard_acquire",
     "__cxa_guard_release",
     "__memcpy_chk",
+    "abs",
     "acos",
     "acosf",
     "acosh",
@@ -91,6 +92,9 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "fabs",
     "fabsf",
     "fabsl",
+    "ffs",
+    "ffsl",
+    "ffsll",
     "fiprintf",
     "floor",
     "floorf",
@@ -98,11 +102,16 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "fmod",
     "fmodf",
     "fmodl",
+    "fprintf",
     "fputc",
     "fputs",
     "free",
     "fwrite",
     "iprintf",
+    "isascii",
+    "isdigit",
+    "labs",
+    "llabs",
     "log",
     "log10",
     "log10f",
@@ -132,6 +141,7 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "pow",
     "powf",
     "powl",
+    "printf",
     "putchar",
     "puts",
     "realloc",
@@ -149,6 +159,7 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "sinhl",
     "sinl",
     "siprintf",
+    "sprintf",
     "sqrt",
     "sqrtf",
     "sqrtl",
@@ -182,6 +193,7 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
     "tanhf",
     "tanhl",
     "tanl",
+    "toascii",
     "trunc",
     "truncf",
     "truncl",
@@ -327,6 +339,41 @@ static void initialize(TargetLibraryInfo &TLI, const Triple &T,
     // Win32 does *not* provide stpcpy.  It is provided on POSIX systems:
     // http://pubs.opengroup.org/onlinepubs/9699919799/functions/stpcpy.html
     TLI.setUnavailable(LibFunc::stpcpy);
+
+    // Win32 does *not* provide ffs.  It is provided on POSIX systems:
+    // http://pubs.opengroup.org/onlinepubs/009695399/functions/ffs.html
+    TLI.setUnavailable(LibFunc::ffs);
+
+    // Win32 does *not* provide llabs.  It is defined in ISO/IEC 9899:1999,
+    // but Visual C++ does not support it.
+    TLI.setUnavailable(LibFunc::llabs);
+  }
+
+  // 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);
   }
 }
 

llvm/test/Transforms/InstCombine/disable-simplify-libcalls.ll

@@ -37,6 +37,18 @@ declare i64 @strtoll(i8*, i8**, i32)
 declare i64 @strtoul(i8*, i8**, i32)
 declare i64 @strtoull(i8*, i8**, i32)
 declare i64 @strcspn(i8*, i8*)
+declare i32 @abs(i32)
+declare i32 @ffs(i32)
+declare i32 @ffsl(i64)
+declare i32 @ffsll(i64)
+declare i32 @fprintf(i8*, i8*)
+declare i32 @isascii(i32)
+declare i32 @isdigit(i32)
+declare i32 @toascii(i32)
+declare i64 @labs(i64)
+declare i64 @llabs(i64)
+declare i32 @printf(i8*)
+declare i32 @sprintf(i8*, i8*)
 
 define double @t1(double %x) {
 ; CHECK: @t1
@@ -234,3 +246,90 @@ define i64 @t25(i8* %y) {
   ret i64 %ret
 ; CHECK: call i64 @strcspn
 }
+
+define i32 @t26(i32 %y) {
+; CHECK: @t26
+  %ret = call i32 @abs(i32 %y)
+  ret i32 %ret
+; CHECK: call i32 @abs
+}
+
+define i32 @t27(i32 %y) {
+; CHECK: @t27
+  %ret = call i32 @ffs(i32 %y)
+  ret i32 %ret
+; CHECK: call i32 @ffs
+}
+
+define i32 @t28(i64 %y) {
+; CHECK: @t28
+  %ret = call i32 @ffsl(i64 %y)
+  ret i32 %ret
+; CHECK: call i32 @ffsl
+}
+
+define i32 @t29(i64 %y) {
+; CHECK: @t29
+  %ret = call i32 @ffsll(i64 %y)
+  ret i32 %ret
+; CHECK: call i32 @ffsll
+}
+
+define void @t30() {
+; CHECK: @t30
+  %x = getelementptr inbounds [13 x i8]* @.str1, i32 0, i32 0
+  call i32 @fprintf(i8* null, i8* %x)
+  ret void
+; CHECK: call i32 @fprintf
+}
+
+define i32 @t31(i32 %y) {
+; CHECK: @t31
+  %ret = call i32 @isascii(i32 %y)
+  ret i32 %ret
+; CHECK: call i32 @isascii
+}
+
+define i32 @t32(i32 %y) {
+; CHECK: @t32
+  %ret = call i32 @isdigit(i32 %y)
+  ret i32 %ret
+; CHECK: call i32 @isdigit
+}
+
+define i32 @t33(i32 %y) {
+; CHECK: @t33
+  %ret = call i32 @toascii(i32 %y)
+  ret i32 %ret
+; CHECK: call i32 @toascii
+}
+
+define i64 @t34(i64 %y) {
+; CHECK: @t34
+  %ret = call i64 @labs(i64 %y)
+  ret i64 %ret
+; CHECK: call i64 @labs
+}
+
+define i64 @t35(i64 %y) {
+; CHECK: @t35
+  %ret = call i64 @llabs(i64 %y)
+  ret i64 %ret
+; CHECK: call i64 @llabs
+}
+
+define void @t36() {
+; CHECK: @t36
+  %x = getelementptr inbounds [1 x i8]* @empty, i32 0, i32 0
+  call i32 @printf(i8* %x)
+  ret void
+; CHECK: call i32 @printf
+}
+
+define void @t37(i8* %x) {
+; CHECK: @t37
+  %y = getelementptr inbounds [13 x i8]* @.str1, i32 0, i32 0
+  call i32 @sprintf(i8* %x, i8* %y)
+  ret void
+; CHECK: call i32 @sprintf
+}