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| author | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-06-13 19:48:53 +0000 |
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| committer | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-06-13 19:48:53 +0000 |
| commit | a6774fc3bcb00587c9f5d8064d2b3bb8264c2ecb (patch) | |
| tree | 0ba757fc93df83e4cc53918ff5b830d9e09c1a95 /gcc/tree-sra.c | |
| parent | 3cc4fffdc5820b0480484ce728b0083d3a8a1f17 (diff) | |
| download | gcc-a6774fc3bcb00587c9f5d8064d2b3bb8264c2ecb.tar.gz | |
* tree-sra.c (tree_sra): Update documentation.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@83064 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-sra.c')
| -rw-r--r-- | gcc/tree-sra.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c index 219c8148985..060b7e84642 100644 --- a/gcc/tree-sra.c +++ b/gcc/tree-sra.c @@ -1130,16 +1130,14 @@ dump_sra_map (FILE *f) re-writes non-aliased structure references into scalar temporaries. The goal is to expose some/all structures to the scalar optimizers. - FNDECL is the function to process. + Scalarization proceeds in two main phases. First, every structure + referenced in the program that complies with can_be_scalarized_p is + marked for scalarization (find_candidates_for_sra). - VARS_TO_RENAME_P is a pointer to the set of variables that need to be - renamed into SSA after this pass is done. These are going to be all the - new scalars created by the SRA process. Notice that since this pass - creates new variables, the bitmap representing all the variables in the - program will be re-sized here. - - PHASE indicates which dump file from the DUMP_FILES array to use when - dumping debugging information. + Second, a mapping between structure fields and scalar temporaries so + that every time a particular field of a particular structure is + referenced in the code, we replace it with its corresponding scalar + temporary (scalarize_structures). TODO |