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| author | Ian Lance Taylor <iant@google.com> | 2007-01-28 05:15:06 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2007-01-28 05:15:06 +0000 |
| commit | eeef0e452e98fe6424ce65fb25fba15c59151848 (patch) | |
| tree | 0e2fc9b10a02a481f17a188d9e01389ef7691fb4 /gcc/testsuite/gcc.dg/strict-overflow-1.c | |
| parent | b73a6056563470e5b99e79a0dc769c351e906e6e (diff) | |
| download | gcc-eeef0e452e98fe6424ce65fb25fba15c59151848.zip gcc-eeef0e452e98fe6424ce65fb25fba15c59151848.tar.gz gcc-eeef0e452e98fe6424ce65fb25fba15c59151848.tar.bz2 | |
common.opt: Add fstrict-overflow.
./: * common.opt: Add fstrict-overflow.
* opts.c (decode_options): Set flag_strict_overflow if -O2.
* flags.h (TYPE_OVERFLOW_WRAPS): Define.
(TYPE_OVERFLOW_UNDEFINED): Define.
(TYPE_OVERFLOW_TRAPS): Define. This replaces TYPE_TRAP_SIGNED.
Replace all uses.
* tree.h (TYPE_TRAP_SIGNED): Don't define.
* fold-const.c (negate_expr_p): Use TYPE_OVERFLOW_UNDEFINED.
(fold_negate_expr): Likewise.
(make_range): Likewise.
(extract_muldiv_1): Likewise.
(maybe_canonicalize_comparison): Likewise.
(fold_comparison): Likewise.
(fold_binary): Likewise.
(tree_expr_nonnegative_p): Likewise.
(tree_expr_nonzero_p): Likewise.
* tree-vrp.c (compare_values): Likewise.
(extract_range_from_binary_expr): Likewise.
(extract_range_from_unary_expr): Likewise.
* tree-ssa-loop-niter.c (infer_loop_bounds_from_signedness):
Likewise.
(nowrap_type_p): Likewise.
* tree-scalar-evolution.c (simple_iv): Likewise.
* fold-const.c (negate_expr_p): Use TYPE_OVERFLOW_WRAPS.
(build_range_check): Likewise.
(extract_muldiv_1): Likewise.
(fold_comparison): Likewise.
* tree-vrp.c (vrp_int_const_binop): Likewise.
(extract_range_from_unary_expr): Likewise.
* convert.c (convert_to_integer): Likewise.
* fold-const.c (fold_negate_expr): Use TYPE_OVERFLOW_TRAPS.
(fold_comparison): Likewise.
(fold_binary): Likewise.
* optabs.c (optab_for_tree_code): Likewise.
* tree-vectorizer.c (vect_is_simple_reduction): Likewise.
* simplify-rtx.c (simplify_const_relational_operation): Check
flag_strict_overflow and flag_trapv.
(simplify_const_relational_operation): Likewise.
* doc/invoke.texi (Option Summary): Mention -fstrict-overflow.
(Optimize Options): Add -fstrict-overflow to -O2 list. Document
-fstrict-overflow.
testsuite/:
* gcc.dg/strict-overflow-1.c: New test.
* gcc.dg/no-strict-overflow-1.c: New test.
* gcc.dg/strict-overflow-2.c: New test.
* gcc.dg/no-strict-overflow-2.c: New test.
* gcc.dg/strict-overflow-3.c: New test.
* gcc.dg/no-strict-overflow-3.c: New test.
* gcc.dg/strict-overflow-4.c: New test.
* gcc.dg/no-strict-overflow-4.c: New test.
* gcc.dg/fold-mod-1.c: Add -fstrict-overflow option.
* gcc.dg/pr15784-1.c: Likewise.
* gcc.dg/pr20922-1.c: Likewise.
* gcc.dg/pr20922-3.c: Likewise.
* gcc.dg/pr20922-4.c: Likewise.
* gcc.dg/pr20922-6.c: Likewise.
* gcc.dg/compare-4.c: Likewise.
* gcc.dg/torture/pr26898-1.c: Likewise.
* gcc.dg/tree-ssa/divide-1.c: Likewise.
* gcc.dg/tree-ssa/divide-2.c: Likewise.
* gcc.dg/tree-ssa/divide-3.c: Likewise.
* gcc.dg/tree-ssa/divide-4.c: Likewise.
* gcc.dg/tree-ssa/pr14490-1.c: Likewise.
* gcc.dg/tree-ssa/pr14490-3.c: Likewise.
* gcc.dg/tree-ssa/pr21082.c: Likewise.
* gcc.dg/tree-ssa/pr26899.c: Likewise.
* g++.dg/tree-ssa/pr21082.C: Likewise.
From-SVN: r121254
Diffstat (limited to 'gcc/testsuite/gcc.dg/strict-overflow-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/strict-overflow-1.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/strict-overflow-1.c b/gcc/testsuite/gcc.dg/strict-overflow-1.c new file mode 100644 index 0000000..1ff96f4 --- /dev/null +++ b/gcc/testsuite/gcc.dg/strict-overflow-1.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-fstrict-overflow -O2 -fdump-tree-final_cleanup" } */ + +/* Source: Ian Lance Taylor. Dual of no-strict-overflow-1.c. */ + +/* We can only simplify the conditional when using strict overflow + semantics. */ + +int +foo (int i) +{ + return i - 5 < 10; +} + +/* { dg-final { scan-tree-dump-not "-[ ]*5" "final_cleanup" } } */ +/* { dg-final { cleanup-tree-dump "final_cleanup" } } */ |