Suyog Sarda 1dea0dc279 This patch recognizes (+ (+ v0, v1) (+ v2, v3)), reorders them for bundling into vector of loads, ...

and vectorizes it. 
 
 Test case :
 
       float hadd(float* a) {
           return (a[0] + a[1]) + (a[2] + a[3]);
        }
 
 
 AArch64 assembly before patch :
 
        ldp	s0, s1, [x0]
 	ldp	s2, s3, [x0, #8]
 	fadd	s0, s0, s1
 	fadd	s1, s2, s3
 	fadd	s0, s0, s1
 	ret
 
 AArch64 assembly after patch :
 
        ldp	d0, d1, [x0]
 	fadd	v0.2s, v0.2s, v1.2s
 	faddp	s0, v0.2s
 	ret

Reviewed Link : http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141208/248531.html



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224119 91177308-0d34-0410-b5e6-96231b3b80d8

2014-12-12 12:53:44 +00:00

..

BBVectorize.cpp

Add minnum / maxnum intrinsics

2014-10-21 23:00:20 +00:00

CMakeLists.txt

…

LLVMBuild.txt

Prune redundant dependencies in LLVMBuild.txt.

2013-12-11 00:30:57 +00:00

LoopVectorize.cpp

Remove redundant variable.

2014-12-09 22:45:07 +00:00

Makefile

…

SLPVectorizer.cpp

This patch recognizes (+ (+ v0, v1) (+ v2, v3)), reorders them for bundling into vector of loads,

2014-12-12 12:53:44 +00:00

Vectorize.cpp

[cleanup] Move the Dominators.h and Verifier.h headers into the IR

2014-01-13 09:26:24 +00:00