[patch,libgfortran] PR51119 - MATMUL slow for large matrices

[Thomas Koenig]

Hi Jerry,

I think this

+      /* Parameter adjustments */
+      c_dim1 = m;
+      c_offset = 1 + c_dim1;

should be

+      /* Parameter adjustments */
+      c_dim1 = rystride;
+      c_offset = 1 + c_dim1;

Regarding options for matmul:  It is possible to add the
options to the lines in Makefile.in

# Turn on vectorization and loop unrolling for matmul.
$(patsubst %.c,%.lo,$(notdir $(i_matmul_c))): AM_CFLAGS += 
-ftree-vectorize -funroll-loops

This is a great step forward.  I think we can close most matmul-related
PRs once this patch has been applied.

Regards

	Thomas