of the original check meant that configure was caching the default
CC check and using that instead of the result of AC_PROG_CC in both
configure checks and during compilation.

This wasn't affecting C++ so it was hard to notice.

Regenerate configure.

llvm-svn: 139937

llvm-svn: 139936

this anymore.

llvm-svn: 139935

on all platforms.

llvm-svn: 139934

llvm-svn: 139931

llvm-svn: 139929

llvm-svn: 139928

llvm-svn: 139927

llvm-svn: 139926

llvm-svn: 139925

llvm-svn: 139923

llvm-svn: 139922

llvm-svn: 139921

llvm-svn: 139919

llvm-svn: 139918

llvm-svn: 139917

llvm-svn: 139916

llvm-svn: 139915

llvm-svn: 139912

llvm-svn: 139911

llvm-svn: 139910

llvm-svn: 139909

llvm-svn: 139908

llvm-svn: 139907

llvm-svn: 139906

llvm-svn: 139905

llvm-svn: 139904

llvm-svn: 139903

llvm-svn: 139902

llvm-svn: 139900

llvm-svn: 139898

llvm-svn: 139892

llvm-svn: 139884

The leaveIntvAfter() function normally inserts a back-copy after the
requested instruction, making the back-copy kill the live range.

In spill mode, try to insert the back-copy before the last use instead.
That means the last use becomes the kill instead of the back-copy.  This
lowers the register pressure because the last use can now redefine the
same register it was reading.

This will also improve compile time: The back-copy isn't a kill, so
hoisting it in hoistCopiesForSize() won't force a recomputation of the
source live range.  Similarly, if the back-copy isn't hoisted by the
splitter, the spiller will not attempt hoisting it locally.

llvm-svn: 139883

If the source register is live after the copy being spilled, there is no
point to hoisting it.  Hoisting inside a basic block only serves to
resolve interferences by shortening the live range of the source.

llvm-svn: 139882

llvm-svn: 139881

llvm-svn: 139880

llvm-svn: 139877

Don't attach annotations to MCInst's.  Instead, have the disassembler return, and the printer accept, an annotation string which can be passed through if the client cares about annotations.

llvm-svn: 139876

gold plugin is built with Large File Support (sizeof(off_t) == 64 on i686)
and the rest of LLVM is built w/o Large File Support
(sizeof(off_t) == 32 on i686) which corrupts the stack.

llvm-svn: 139873