diff options
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/fold-const.c | 2 | ||||
| -rw-r--r-- | gcc/match.pd | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr81227.c | 22 | ||||
| -rw-r--r-- | gcc/tree-ssa-reassoc.c | 2 |
6 files changed, 39 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 293671b..34de7cf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2017-06-28 Richard Biener <rguenther@suse.de> + + PR middle-end/81227 + * fold-const.c (negate_expr_p): Use TYPE_UNSIGNED, not + TYPE_OVERFLOW_WRAPS. + * match.pd (negate_expr_p): Likewise. + * tree-ssa-reassoc.c (optimize_range_tests_diff): Use + fold_build2, not fold_binary. + 2017-06-28 Wilco Dijkstra <wdijkstr@arm.com> * config/aarch64/aarch64 (aarch64_expand_mov_immediate): diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 379a30e..1bcbbb5 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -383,7 +383,7 @@ negate_expr_p (tree t) switch (TREE_CODE (t)) { case INTEGER_CST: - if (INTEGRAL_TYPE_P (type) && TYPE_OVERFLOW_WRAPS (type)) + if (INTEGRAL_TYPE_P (type) && TYPE_UNSIGNED (type)) return true; /* Check that -CST will not overflow type. */ diff --git a/gcc/match.pd b/gcc/match.pd index ede5504..4c64b21 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -914,7 +914,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (match negate_expr_p INTEGER_CST (if ((INTEGRAL_TYPE_P (type) - && TYPE_OVERFLOW_WRAPS (type)) + && TYPE_UNSIGNED (type)) || (!TYPE_OVERFLOW_SANITIZED (type) && may_negate_without_overflow_p (t))))) (match negate_expr_p diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d50a9d8..a96d5ab 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-06-28 Richard Biener <rguenther@suse.de> + + PR middle-end/81227 + * gcc.dg/pr81227.c: New testcase. + 2017-06-28 Michael Meissner <meissner@linux.vnet.ibm.com> PR target/81193 diff --git a/gcc/testsuite/gcc.dg/pr81227.c b/gcc/testsuite/gcc.dg/pr81227.c new file mode 100644 index 0000000..bdaa8cb --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr81227.c @@ -0,0 +1,22 @@ +/* Copy of gcc.c-torture/compile/pr80443.c */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fwrapv" } */ + +struct S { int a : 1; } b, c; +signed char d, e, f; + +void +foo () +{ + while (f) + { + signed char g = b.a; + if (g) + b.a = ~(1 + (d || c.a)); + if (b.a < g && b.a) + g = 0; + if (b.a > c.a) + b.a = g; + c.a = e; + } +} diff --git a/gcc/tree-ssa-reassoc.c b/gcc/tree-ssa-reassoc.c index 35eb72c..982ab79 100644 --- a/gcc/tree-ssa-reassoc.c +++ b/gcc/tree-ssa-reassoc.c @@ -2561,7 +2561,7 @@ optimize_range_tests_diff (enum tree_code opcode, tree type, tem2 = fold_convert (type, tem2); lowi = fold_convert (type, lowi); mask = fold_build1 (BIT_NOT_EXPR, type, tem1); - tem1 = fold_binary (MINUS_EXPR, type, + tem1 = fold_build2 (MINUS_EXPR, type, fold_convert (type, rangei->exp), lowi); tem1 = fold_build2 (BIT_AND_EXPR, type, tem1, mask); lowj = build_int_cst (type, 0); |