make all Emit*() functions consult the TargetLibraryInfo information before creating a call to a library function.
Update all clients to pass the TLI information around.
Previous draft reviewed by Eli.

llvm-svn: 160733

fputc, memchr, memcmp, putchar, puts, strchr, strncmp

llvm-svn: 160690

llvm-svn: 160678

also fix SimplifyLibCalls to use TLI rather than compile-time conditionals to enable optimizations on floor, ceil, round, rint, and nearbyint

llvm-svn: 154960

to TargetLibraryInfo and use one of them in GlobalOpt.

llvm-svn: 150323

llvm-svn: 146960

Enhance both TargetLibraryInfo and SelectionDAGBuilder so that the latter can use the former to prevent the formation of libm SDNode's when  -fno-builtin is passed.

llvm-svn: 146193

llvm-svn: 145608

llvm-svn: 145596

llvm-svn: 145508

change intended.

llvm-svn: 145468

(fptrunc (sqrt (fpext x))) -> (sqrtf x) transformation if -fno-builtin is 
specified.
rdar://10466410

llvm-svn: 145460

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>.

llvm-svn: 144876

Patch by Pekka Jaaskelainen. 

llvm-svn: 132774

llvm-svn: 131806

triple component.

llvm-svn: 129838

llvm-svn: 129803

and siprintf is available on the target.

llvm-svn: 126940

and siprintf is available on the target.

llvm-svn: 126937

and iprintf is available on the target. Currently iprintf is only
marked as being available on the XCore.

llvm-svn: 126935

llvm-svn: 125978

query about available library functions.  For now this just has 
memset_pattern16, which exists on darwin, but it can be extended for a 
bunch of other things in the future.

llvm-svn: 125965