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| author | Jakub Jelinek <jakub@redhat.com> | 2019-12-04 10:38:48 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-12-04 10:38:48 +0100 |
| commit | 526b4c716a340ee9464965e63eee2b9954fe21f1 (patch) | |
| tree | 23a2d4dc47394916d3c8e36899a6ebb0d397535b /gcc/match.pd | |
| parent | 6f1e966874de23d7e47cbaebfb5a9de6759cb089 (diff) | |
re PR tree-optimization/92734 (Missing match.pd simplification done by fold_binary_loc on generic)
PR tree-optimization/92734
* match.pd ((A +- B) - A -> +- B, (A +- B) -+ B -> A,
A - (A +- B) -> -+ B, A +- (B -+ A) -> +- B): Handle nop_convert.
* gcc.dg/tree-ssa/pr92734-2.c: New test.
From-SVN: r278958
Diffstat (limited to 'gcc/match.pd')
| -rw-r--r-- | gcc/match.pd | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index d3312e5f279..c50b5468c74 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -2159,20 +2159,26 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) /* A - (A +- B) -> -+ B */ /* A +- (B -+ A) -> +- B */ (simplify - (minus (plus:c @0 @1) @0) - @1) + (minus (nop_convert (plus:c (nop_convert @0) @1)) @0) + (view_convert @1)) (simplify - (minus (minus @0 @1) @0) - (negate @1)) + (minus (nop_convert (minus (nop_convert @0) @1)) @0) + (if (!ANY_INTEGRAL_TYPE_P (type) + || TYPE_OVERFLOW_WRAPS (type)) + (negate (view_convert @1)) + (view_convert (negate @1)))) (simplify - (plus:c (minus @0 @1) @1) - @0) + (plus:c (nop_convert (minus @0 (nop_convert @1))) @1) + (view_convert @0)) (simplify - (minus @0 (plus:c @0 @1)) - (negate @1)) + (minus @0 (nop_convert (plus:c (nop_convert @0) @1))) + (if (!ANY_INTEGRAL_TYPE_P (type) + || TYPE_OVERFLOW_WRAPS (type)) + (negate (view_convert @1)) + (view_convert (negate @1)))) (simplify - (minus @0 (minus @0 @1)) - @1) + (minus @0 (nop_convert (minus (nop_convert @0) @1))) + (view_convert @1)) /* (A +- B) + (C - A) -> C +- B */ /* (A + B) - (A - C) -> B + C */ /* More cases are handled with comparisons. */ |