llvm-svn: 28007

llvm-svn: 28006

llvm-svn: 28005

node can be folded.

llvm-svn: 28003

nodes should not be folded into other nodes.
This fixes the miscompilation of PR 749.
Temporarily under flag control.

llvm-svn: 28002

and is already available, instead of falling back to emitting a load, fall
back to emitting a reg-reg copy.  This generates significantly better code
for some SSE testcases, as SSE has lots of two-address instructions and
none of them are read/modify/write.  As one example, this change does:

        pshufd %XMM5, XMMWORD PTR [%ESP + 84], 255
        xorps %XMM2, %XMM5
        cmpltps %XMM1, %XMM0
-       movaps XMMWORD PTR [%ESP + 52], %XMM0
-       movapd %XMM6, XMMWORD PTR [%ESP + 52]
+       movaps %XMM6, %XMM0
        cmpltps %XMM6, XMMWORD PTR [%ESP + 68]
        movapd XMMWORD PTR [%ESP + 52], %XMM6
        movaps %XMM6, %XMM0
        cmpltps %XMM6, XMMWORD PTR [%ESP + 36]
        cmpltps %XMM3, %XMM0
-       movaps XMMWORD PTR [%ESP + 20], %XMM0
-       movapd %XMM7, XMMWORD PTR [%ESP + 20]
+       movaps %XMM7, %XMM0
        cmpltps %XMM7, XMMWORD PTR [%ESP + 4]
        movapd XMMWORD PTR [%ESP + 20], %XMM7
        cmpltps %XMM4, %XMM0

... which is far better than a store followed by a load!

llvm-svn: 28001

llvm-svn: 28000

llvm-svn: 27999

llvm-svn: 27998

Transforms/InstCombine/vec_insert_to_shuffle.ll

llvm-svn: 27997

llvm-svn: 27996

for now.

Patch contributed by Alexander Friedman.

llvm-svn: 27994

llvm-svn: 27993

llvm-svn: 27992

(VAND, VADD, etc.). Legalizer will assert otherwise.

llvm-svn: 27991

If we fail to find a required program, simply set that program to echo
out something that tells the user the situation. That is, instead of just
"true runtest" we now get "echo 'Skipped: runtest not found'".

llvm-svn: 27990

llvm-svn: 27989

llvm-svn: 27988

PR748.

llvm-svn: 27987

llvm-svn: 27986

- Fixed vararg support.

llvm-svn: 27985

nondeterminism being bad) could cause some trivial missed optimizations (dead
phi nodes being left around for later passes to clean up).

With this, llvm-gcc4 now bootstraps and correctly compares.  I don't know
why I never tried to do it before... :)

llvm-svn: 27984

llvm-svn: 27983

recognize some simple affine IV's.

llvm-svn: 27982

llvm-svn: 27981

llvm-svn: 27980

llvm-svn: 27979

llvm-svn: 27978

llvm-svn: 27977

so we can point to them on llvm-dev.

llvm-svn: 27976

llvm-svn: 27975

llvm-svn: 27974

failres.

llvm-svn: 27973

llvm-svn: 27972

llvm-svn: 27971

llvm-svn: 27970

llvm-svn: 27969

llvm-svn: 27968

llvm-svn: 27967

llvm-svn: 27966