llvm-svn: 12914

llvm-svn: 12912

llvm-svn: 12911

llvm-svn: 12908

llvm-svn: 12907

llvm-svn: 12905

llvm-svn: 12903

llvm-svn: 12902

Fix several bugs in the intrinsics:
  1. Make sure to copy the input registers before the instructions that use them
  2. Make sure to copy the value returned by 'in' out of EAX into the register
     it is supposed to be in.

This fixes assertions when using in/out and linear scan.

llvm-svn: 12896

llvm-svn: 12895

llvm-svn: 12894

llvm-svn: 12893

llvm-svn: 12892

llvm-svn: 12891

LoopSimplify was not updating dominator frontiers correctly in some cases.

llvm-svn: 12890

llvm-svn: 12889

llvm-svn: 12888

llvm-svn: 12887

llvm-svn: 12886

llvm-svn: 12885

This is fairly straight-forward, but was a real nightmare to get just
perfect.  aarg.  :)

llvm-svn: 12884

consists mostly of changing sloppy K&R C code to slightly more
disciplined K&R C code, and doing the usual things to shut gcc up.

llvm-svn: 12877

llvm-svn: 12876

llvm-svn: 12875

llvm-svn: 12874

llvm-svn: 12873

llvm-svn: 12872

llvm-svn: 12871

Update testcase to illustrate the coalescing problem. The previous one did not work because of a fix in the x86 instruction selector.

llvm-svn: 12870

llvm-svn: 12869

llvm-svn: 12868

intrinsics.

Modified llvm.readio and llvm.writeio to use pointers to memory instead
of integers.  This should take care of problems such as different pointer
sizes, casting integers to pointers, weird architectural pointer types, etc.

Re-worded the description of llvm.readio and llvm.writeio so that it should
be more clear as to why they should be used over regular loads/stores for
I/O.

llvm-svn: 12867

llvm-svn: 12866

llvm-svn: 12865

llvm-svn: 12864

llvm-svn: 12863

llvm-svn: 12862

execute other CallGraphSCCPasses after the inliner without crashing.

llvm-svn: 12861

SCC passes much more useful.  In particular, this should fix the incredibly
stupid missed inlining opportunities that the inliner suffered from.

llvm-svn: 12860

llvm-svn: 12859