Make MemoryBuiltins aware of TargetLibraryInfo.

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

1 files changed, 38 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetLibraryInfo.h b/include/llvm/Target/TargetLibraryInfo.h
index a44105b..2a0a432 100644
--- a/include/llvm/Target/TargetLibraryInfo.h
+++ b/include/llvm/Target/TargetLibraryInfo.h
@@ -18,6 +18,26 @@ namespace llvm {
 
   namespace LibFunc {
     enum Func {
+      /// void operator delete[](void*);
+      ZdaPv,
+      /// void operator delete(void*);
+      ZdlPv,
+      /// void *new[](unsigned int);
+      Znaj,
+      /// void *new[](unsigned int, nothrow);
+      ZnajRKSt9nothrow_t,
+      /// void *new[](unsigned long);
+      Znam,
+      /// void *new[](unsigned long, nothrow);
+      ZnamRKSt9nothrow_t,
+      /// void *new(unsigned int);
+      Znwj,
+      /// void *new(unsigned int, nothrow);
+      ZnwjRKSt9nothrow_t,
+      /// void *new(unsigned long);
+      Znwm,
+      /// void *new(unsigned long, nothrow);
+      ZnwmRKSt9nothrow_t,
       /// int __cxa_atexit(void (*f)(void *), void *p, void *d);
       cxa_atexit,
       /// void __cxa_guard_abort(guard_t *guard);
@@ -71,6 +91,8 @@ namespace llvm {
       atanhl,
       /// long double atanl(long double x);
       atanl,
+      /// void *calloc(size_t count, size_t size);
+      calloc,
       /// double cbrt(double x);
       cbrt,
       /// float cbrtf(float x);
@@ -149,6 +171,8 @@ namespace llvm {
       fputc,
       /// int fputs(const char *s, FILE *stream);
       fputs,
+      /// void free(void *ptr);
+      free,
       /// size_t fwrite(const void *ptr, size_t size, size_t nitems,
       /// FILE *stream);
       fwrite,
@@ -184,6 +208,8 @@ namespace llvm {
       logf,
       /// long double logl(long double x);
       logl,
+      /// void *malloc(size_t size);
+      malloc,
       /// void *memchr(const void *s, int c, size_t n);
       memchr,
       /// int memcmp(const void *s1, const void *s2, size_t n);
@@ -202,6 +228,8 @@ namespace llvm {
       nearbyintf,
       /// long double nearbyintl(long double x);
       nearbyintl,
+      /// int posix_memalign(void **memptr, size_t alignment, size_t size);
+      posix_memalign,
       /// double pow(double x, double y);
       pow,
       /// float powf(float x, float y);
@@ -212,6 +240,10 @@ namespace llvm {
       putchar,
       /// int puts(const char *s);
       puts,
+      /// void *realloc(void *ptr, size_t size);
+      realloc,
+      /// void *reallocf(void *ptr, size_t size);
+      reallocf,
       /// double rint(double x);
       rint,
       /// float rintf(float x);
@@ -250,6 +282,8 @@ namespace llvm {
       strchr,
       /// char *strcpy(char *s1, const char *s2);
       strcpy,
+      /// char *strdup(const char *s1);
+      strdup,
       /// size_t strlen(const char *s);
       strlen,
       /// char *strncat(char *s1, const char *s2, size_t n);
@@ -258,6 +292,8 @@ namespace llvm {
       strncmp,
       /// char *strncpy(char *s1, const char *s2, size_t n);
       strncpy,
+      /// char *strndup(const char *s1, size_t n);
+      strndup,
       /// size_t strnlen(const char *s, size_t maxlen);
       strnlen,
       /// double tan(double x);
@@ -278,6 +314,8 @@ namespace llvm {
       truncf,
       /// long double truncl(long double x);
       truncl,
+      /// void *valloc(size_t size);
+      valloc,
 
       NumLibFuncs
     };