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* [Bug middle-end/44329]  New: vectorization loss in gas_dyn
@ 2010-05-30  0:32 howarth at nitro dot med dot uc dot edu
  2010-05-30  0:34 ` [Bug middle-end/44329] " howarth at nitro dot med dot uc dot edu
  0 siblings, 1 reply; 2+ messages in thread
From: howarth at nitro dot med dot uc dot edu @ 2010-05-30  0:32 UTC (permalink / raw)
  To: gcc-bugs

Currently gcc trunk is showing significant loss of vectorization at r160038 for
the gas_dyn.f90 benchmark...

bash-3.2$ gfortran -O3 -ffast-math -ftree-vectorizer-verbose=2 gas_dyn.f90 &>
gcc46.txt
bash-3.2$ grep "LOOP VECTORIZED" gcc46.txt | wc
      29     116    1177

compared to...

bash-3.2$ gfortran -O3 -ffast-math -ftree-vectorizer-verbose=2 gas_dyn.f90 &>
gcc46.txt
bash-3.2$ grep "LOOP VECTORIZED" gcc46.txt | wc
      41     164    1666

at r159941.


-- 
           Summary: vectorization loss in gas_dyn
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: x86_64-apple-darwin10
  GCC host triplet: x86_64-apple-darwin10
GCC target triplet: x86_64-apple-darwin10


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44329


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug middle-end/44329] vectorization loss in gas_dyn
  2010-05-30  0:32 [Bug middle-end/44329] New: vectorization loss in gas_dyn howarth at nitro dot med dot uc dot edu
@ 2010-05-30  0:34 ` howarth at nitro dot med dot uc dot edu
  0 siblings, 0 replies; 2+ messages in thread
From: howarth at nitro dot med dot uc dot edu @ 2010-05-30  0:34 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from howarth at nitro dot med dot uc dot edu  2010-05-30 00:34 -------
Sorry for the noise. Wrong version of gcc was being executed.


-- 

howarth at nitro dot med dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44329


^ permalink raw reply	[flat|nested] 2+ messages in thread
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2010-05-30  0:32 [Bug middle-end/44329] New: vectorization loss in gas_dyn howarth at nitro dot med dot uc dot edu
2010-05-30  0:34 ` [Bug middle-end/44329] " howarth at nitro dot med dot uc dot edu

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