From f41d1b39a6443fad38c36af34b1baa384954ca80 Mon Sep 17 00:00:00 2001 From: Andrew MacLeod Date: Sun, 2 Oct 2022 18:43:35 -0400 Subject: [PATCH] Don't process undefined range. No need to continue processing an undefined range. gcc/ PR tree-optimization/107109 * range-op.cc (adjust_op1_for_overflow): Don't process undefined. gcc/testsuite/ * gcc.dg/pr107109.c: New. --- gcc/range-op.cc | 2 ++ gcc/testsuite/gcc.dg/pr107109.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/pr107109.c diff --git a/gcc/range-op.cc b/gcc/range-op.cc index 7ef9803..4f647ab 100644 --- a/gcc/range-op.cc +++ b/gcc/range-op.cc @@ -1370,6 +1370,8 @@ static void adjust_op1_for_overflow (irange &r, const irange &op2, relation_kind rel, bool add_p) { + if (r.undefined_p ()) + return; tree type = r.type (); // Check for unsigned overflow and calculate the overflow part. signop s = TYPE_SIGN (type); diff --git a/gcc/testsuite/gcc.dg/pr107109.c b/gcc/testsuite/gcc.dg/pr107109.c new file mode 100644 index 0000000..e3036f6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr107109.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ +/* { dg-options "-O1" } */ + +int printf(const char *, ...); +int a, b; +void c() { + int d, e; + L: + a = (b && a) ^ 2756578370; + d = ~a + (e ^ d) ^ 2756578370; + if (!d) + printf("%d", a); + d = a / e; + goto L; +} +int main() { + if (a) + c(); + return 0; +} + -- 2.7.4