llvm-svn: 28972

will be profitable.  This is mainly to remove some cases where excessive
unswitching would result in long compile times and/or huge generated code.

Once someone comes up with a better heuristic that avoids these cases, this
should be switched out.

llvm-svn: 28962

llvm-svn: 28961

blocks.

llvm-svn: 28959

Remove the Function pointer cast in these calls, converting it to
a cast of argument.
%tmp60 = tail call int cast (int (ulong)* %str to int (int)*)( int 10 )
%tmp60 = tail call int cast (int (ulong)* %str to int (int)*)( uint %tmp51 )

llvm-svn: 28953

Be more careful when updating Phi nodes after eliminating dead switch cases.  Fix
proposed by Chris.

llvm-svn: 28947

remove the struct return argument of a csret function, even if it is obviously
dead.

llvm-svn: 28943

will make Shootout-C/nestedloop faster.

llvm-svn: 28924

llvm-svn: 28914

of LCSSA.  This results several times the number of unswitchings occurring on
tests such and timberwolfmc, unix-tbl, and ldecod.

llvm-svn: 28912

"LCSSA" phi node causes indvars to break dominance properties.  This fixes
causes indvars to avoid inserting aggressive code in this case, instead
indvars should be fixed to be more aggressive in the face of lcssa phi's.

llvm-svn: 28850

llvm-svn: 28834

printf("%s\n", str) -> puts(str)
printf("%c", c) -> putchar(c)
Also fixed fprintf(file, "%c", c) -> fputc(c, file)

llvm-svn: 28815

llvm-svn: 28814

idioms into bswap intrinsics.

llvm-svn: 28803

bug exposed by the recent lcssa work.

llvm-svn: 28779

LCSSA is still the slowest pass when gccas'ing 252.eon, but now it only takes
39s instead of 289s. :)

llvm-svn: 28776

llvm-svn: 28774

not handling PHI nodes correctly when determining if a value was live-out.

This patch reduces the number of detected live-out variables in the testcase
from 6565 to 485.

llvm-svn: 28771

llvm-svn: 28759

llvm-svn: 28758

If a single exit block has multiple predecessors within the loop, it will
appear in the exit blocks list more than once.  LCSSA needs to take that into
account so that it doesn't double process that exit block.

llvm-svn: 28750

llvm-svn: 28748

Back out Owen's 6/9 changes. They broke MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others).

llvm-svn: 28747

LCSSA.

llvm-svn: 28739

on this.

llvm-svn: 28738

post-increment value, should be first cast to the appropriated type (to the
type of the common expr). Otherwise, the rewrite of a use based on (common +
iv) may end up with an incorrect type.

llvm-svn: 28735

require LCSSA.

llvm-svn: 28734

llvm-svn: 28714

PPC/altivec

llvm-svn: 28698

llvm-svn: 28694

llvm-svn: 28693

llvm-svn: 28680

llvm-svn: 28678

actually going on.

llvm-svn: 28677

llvm-svn: 28664

to link in the implementation.  Thanks to Anton Korobeynikov for figuring out
what was going on here.

llvm-svn: 28660

llvm-svn: 28642

code (while cloning) it often gets the branch/switch instructions.  Since it
knows that edges of the CFG are dead, it need not clone (or even look) at
the obviously dead blocks.  This should speed up the inliner substantially on
code where there are lots of inlinable calls to functions with constant
arguments.  On C++ code in particular, this kicks in.

llvm-svn: 28641

llvm-svn: 28632