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graphite.c (graphite_apply_transformations): Check for -fgraphite-identity.

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2008-10-23  Tobias Grosser  <grosser@fim.uni-passau.de>

	* graphite.c (graphite_apply_transformations): Check for
	-fgraphite-identity.
	* toplev.c (process_options): Add graphite_identity.
	* tree-ssa-loop.c (gate_graphite_transforms): Add graphite_identity.

From-SVN: r141325
This commit is contained in:
Tobias Grosser 2008-10-23 17:00:35 +00:00 committed by Tobias Grosser
parent 1fa8718bc8
commit 20ed8b32ba
5 changed files with 22 additions and 13 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2008-10-23 Tobias Grosser <grosser@fim.uni-passau.de>
* graphite.c (graphite_apply_transformations): Check for
-fgraphite-identity.
* toplev.c (process_options): Add graphite_identity.
* tree-ssa-loop.c (gate_graphite_transforms): Add graphite_identity.
2008-10-23 Bernd Schmidt <bernd.schmidt@analog.com>
* config/bfin/bfin.c (bdesc_2arg): Add mulhisill, mulhisilh,

4
gcc/common.opt
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@ -567,6 +567,10 @@ floop-block
Common Report Var(flag_loop_block) Optimization
Enable Loop Blocking transformation
fgraphite-identity
Common Report Var(flag_graphite_identity) Optimization
Enable Graphite Identity transformation
fguess-branch-probability
Common Report Var(flag_guess_branch_prob) Optimization
Enable guessing of branch probabilities

16
gcc/graphite.c
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@ -5068,17 +5068,13 @@ graphite_apply_transformations (scop_p scop)
if (flag_loop_block)
transform_done = graphite_trans_scop_block (scop);
#if 0 && ENABLE_CHECKING
/* When the compiler is configured with ENABLE_CHECKING, always
generate code, even if we did not apply any transformation. This
provides better code coverage of the backend code generator.
This also allows to check the performance for an identity
transform: GIMPLE -> GRAPHITE -> GIMPLE; and the output of CLooG
is never an identity: if CLooG optimizations are not disabled,
the CLooG output is always optimized in control flow. */
/* Generate code even if we did not apply any real transformation.
This also allows to check the performance for the identity
transformation: GIMPLE -> GRAPHITE -> GIMPLE
Keep in mind that CLooG optimizes in control, so the loop structure
may change, even if we only use -fgraphite-identity. */
if (flag_graphite_identity)
transform_done = true;
#endif
return transform_done;
}

3
gcc/toplev.c
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@ -1707,7 +1707,8 @@ process_options (void)
if (flag_graphite
|| flag_loop_block
|| flag_loop_interchange
|| flag_loop_strip_mine)
|| flag_loop_strip_mine
|| flag_graphite_identity)
sorry ("Graphite loop optimizations cannot be used");
#endif

3
gcc/tree-ssa-loop.c
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@ -305,7 +305,8 @@ gate_graphite_transforms (void)
{
/* Enable -fgraphite pass if any one of the graphite optimization flags
is turned on. */
if (flag_loop_block || flag_loop_interchange || flag_loop_strip_mine)
if (flag_loop_block || flag_loop_interchange || flag_loop_strip_mine
|| flag_graphite_identity)
flag_graphite = 1;
return flag_graphite != 0;