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| author | Marc Glisse <marc.glisse@inria.fr> | 2017-05-25 10:45:48 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2017-05-25 08:45:48 +0000 |
| commit | 11d6b45d431b0aa30cf5ce3941b01ba4fd342af5 (patch) | |
| tree | 30846871027092d0e1d084d5e2b5812c8c5e3518 /gcc/tree.c | |
| parent | 10bc8017a3028c291e7b85486bc66bfc12b5f377 (diff) | |
| download | gcc-11d6b45d431b0aa30cf5ce3941b01ba4fd342af5.zip gcc-11d6b45d431b0aa30cf5ce3941b01ba4fd342af5.tar.gz gcc-11d6b45d431b0aa30cf5ce3941b01ba4fd342af5.tar.bz2 | |
Allow some NOP conversions in (X+CST1)+CST2 in match.pd
2017-05-25 Marc Glisse <marc.glisse@inria.fr>
gcc/
* match.pd ((A +- CST1) +- CST2): Allow some conversions.
* tree.c (drop_tree_overflow): Handle COMPLEX_CST and VECTOR_CST.
gcc/testsuite/
* gcc.dg/tree-ssa/addadd.c: New file.
From-SVN: r248448
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -13138,6 +13138,25 @@ drop_tree_overflow (tree t) and drop the flag. */ t = copy_node (t); TREE_OVERFLOW (t) = 0; + + /* For constants that contain nested constants, drop the flag + from those as well. */ + if (TREE_CODE (t) == COMPLEX_CST) + { + if (TREE_OVERFLOW (TREE_REALPART (t))) + TREE_REALPART (t) = drop_tree_overflow (TREE_REALPART (t)); + if (TREE_OVERFLOW (TREE_IMAGPART (t))) + TREE_IMAGPART (t) = drop_tree_overflow (TREE_IMAGPART (t)); + } + if (TREE_CODE (t) == VECTOR_CST) + { + for (unsigned i = 0; i < VECTOR_CST_NELTS (t); ++i) + { + tree& elt = VECTOR_CST_ELT (t, i); + if (TREE_OVERFLOW (elt)) + elt = drop_tree_overflow (elt); + } + } return t; } |