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| author | Richard Biener <rguenther@suse.de> | 2023-11-14 12:53:18 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-11-14 13:44:56 +0100 |
| commit | bc390ae72ff974d6985639b5b392f6e9192c2ee7 (patch) | |
| tree | 27a9e3ca377d5676728e52b573e218491b1ff7f0 /gcc | |
| parent | 5ea2965b499f9e491e45db19fedbccfccb75076a (diff) | |
| download | gcc-bc390ae72ff974d6985639b5b392f6e9192c2ee7.zip gcc-bc390ae72ff974d6985639b5b392f6e9192c2ee7.tar.gz gcc-bc390ae72ff974d6985639b5b392f6e9192c2ee7.tar.bz2 | |
Loop distribution fix for SCC detection
The following adjusts data_dep_in_cycle_p to properly consider the
whole loop nest when looking for data dep cycles and exempting
zero-distance DDRs instead of just the outermost loop.
* tree-loop-distribution.cc (loop_distribution::data_dep_in_cycle_p):
Consider all loops in the nest when looking for
lambda_vector_zerop.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/tree-loop-distribution.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-loop-distribution.cc b/gcc/tree-loop-distribution.cc index 8e92af6..5ededd9 100644 --- a/gcc/tree-loop-distribution.cc +++ b/gcc/tree-loop-distribution.cc @@ -1440,7 +1440,7 @@ loop_distribution::data_dep_in_cycle_p (struct graph *rdg, else if (DDR_NUM_DIST_VECTS (ddr) > 1) return true; else if (DDR_REVERSED_P (ddr) - || lambda_vector_zerop (DDR_DIST_VECT (ddr, 0), 1)) + || lambda_vector_zerop (DDR_DIST_VECT (ddr, 0), DDR_NB_LOOPS (ddr))) return false; return true; |