[patch, fortran, RFC] First steps towards inlining matmul

[Dominique d'Humières]

The patch causes the following regressions:

FAIL: gfortran.dg/coarray/dummy_1.f90 -fcoarray=single  -O2  -latomic (internal compiler error)
FAIL: gfortran.dg/coarray/dummy_1.f90 -fcoarray=single  -O2  -latomic (test for excess errors)
FAIL: gfortran.dg/coarray/dummy_1.f90 -fcoarray=lib  -O2  -lcaf_single -latomic (internal compiler error)
FAIL: gfortran.dg/coarray/dummy_1.f90 -fcoarray=lib  -O2  -lcaf_single -latomic (test for excess errors)
FAIL: gfortran.dg/array_function_3.f90   -O  (internal compiler error)
FAIL: gfortran.dg/array_function_3.f90   -O  (test for excess errors)
FAIL: gfortran.dg/bind_c_vars.f90   -g -flto  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O0  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O1  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O1  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O2  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O2  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer -funroll-loops  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -O3 -g  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -Os  (internal compiler error)
FAIL: gfortran.dg/bound_2.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/bound_2.f90   -g -flto  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O1  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O1  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O2  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O2  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer -funroll-loops  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -O3 -g  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -Os  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/bound_7.f90   -g -flto  (internal compiler error)
FAIL: gfortran.dg/bound_7.f90   -g -flto  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O0  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O1  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O1  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O2  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O2  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer -funroll-loops  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -O3 -g  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -Os  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -Os  (test for excess errors)
FAIL: gfortran.dg/bound_8.f90   -g -flto  (internal compiler error)
FAIL: gfortran.dg/bound_8.f90   -g -flto  (test for excess errors)

I think the line

  if (!upper && as->type == AS_ASSUMED_SHAPE && dim)

should be something such as (untested)

  if (!upper && dim && as && as->type == AS_ASSUMED_SHAPE)

Dominique

> Le 5 avr. 2015 à 22:37, Thomas Koenig <tkoenig@netcologne.de> a écrit :
> 
> Hi Dominique,
> 
>> which means that -fexternal-blas should disable the inlining.
> 
> It is not surprising that a higly tuned BLAS library is better than
> a simple inlining for large matrices.
> 
> I did some tests by adjusting n; it seems the inline version is
> faster for n<=22, which is not too bad.
> 
> Regarding your other test case:  This tests matrix*vector
> multiplication, which is not implemented yet :-)
> 
> Regards,
> 
> 	Thomas