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| author | Jan Hubicka <jh@suse.cz> | 2024-02-14 17:37:34 +0100 |
|---|---|---|
| committer | Jan Hubicka <jh@suse.cz> | 2024-02-14 17:37:34 +0100 |
| commit | 8d51bfe0f97a27c749c36003867901338833340a (patch) | |
| tree | a39342e5231170b14a73aefe2483be6bf6de5b73 /gcc | |
| parent | 16ae5efedd389e8952f35bb10665518c22a9251c (diff) | |
| download | gcc-8d51bfe0f97a27c749c36003867901338833340a.zip gcc-8d51bfe0f97a27c749c36003867901338833340a.tar.gz gcc-8d51bfe0f97a27c749c36003867901338833340a.tar.bz2 | |
Fix ICE in loop splitting with -fno-guess-branch-probability
PR tree-optimization/111054
gcc/ChangeLog:
* tree-ssa-loop-split.cc (split_loop): Check for profile being present.
gcc/testsuite/ChangeLog:
* gcc.c-torture/compile/pr111054.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr111054.c | 11 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-split.cc | 3 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr111054.c b/gcc/testsuite/gcc.c-torture/compile/pr111054.c new file mode 100644 index 0000000..3c0d6e8 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr111054.c @@ -0,0 +1,11 @@ +/* { dg-additional-options "-fno-guess-branch-probability" } */ +void *p, *q; +int i, j; + +void +foo (void) +{ + for (i = 0; i < 20; i++) + if (i < j) + p = q; +} diff --git a/gcc/tree-ssa-loop-split.cc b/gcc/tree-ssa-loop-split.cc index 04215fe..c0bb1b7 100644 --- a/gcc/tree-ssa-loop-split.cc +++ b/gcc/tree-ssa-loop-split.cc @@ -712,7 +712,8 @@ split_loop (class loop *loop1) ? true_edge->probability.to_sreal () : (sreal)1; sreal scale2 = false_edge->probability.reliable_p () ? false_edge->probability.to_sreal () : (sreal)1; - sreal div1 = loop1_prob.to_sreal (); + sreal div1 = loop1_prob.initialized_p () + ? loop1_prob.to_sreal () : (sreal)1/(sreal)2; /* +1 to get header interations rather than latch iterations and then -1 to convert back. */ if (div1 != 0) |