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| author | Kugan Vivekanandarajah <kuganv@linaro.org> | 2018-07-13 05:25:47 +0000 |
|---|---|---|
| committer | Kugan Vivekanandarajah <kugan@gcc.gnu.org> | 2018-07-13 05:25:47 +0000 |
| commit | 061d40da00952fe7eabd8faae60e3cc4ac8f734a (patch) | |
| tree | cd8810be6cbfa003a055108252efa03a7b119ffb /gcc | |
| parent | b18bb376a1fa8c48645a7527720f756ae0bb6b87 (diff) | |
| download | gcc-061d40da00952fe7eabd8faae60e3cc4ac8f734a.zip gcc-061d40da00952fe7eabd8faae60e3cc4ac8f734a.tar.gz gcc-061d40da00952fe7eabd8faae60e3cc4ac8f734a.tar.bz2 | |
re PR tree-optimization/86489 (ICE in gimple_phi_arg starting with r261682 when building 531.deepsjeng_r with FDO + LTO)
gcc/ChangeLog:
2018-07-13 Kugan Vivekanandarajah <kuganv@linaro.org>
Richard Biener <rguenther@suse.de>
PR middle-end/86489
* tree-ssa-loop-niter.c (number_of_iterations_popcount): Check
that the loop latch destination where phi is defined.
gcc/testsuite/ChangeLog:
2018-07-13 Kugan Vivekanandarajah <kuganv@linaro.org>
PR middle-end/86489
* gcc.dg/pr86489.c: New test.
Co-Authored-By: Richard Biener <rguenther@suse.de>
From-SVN: r262622
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr86489.c | 12 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 1 |
4 files changed, 25 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9c95566..0cfa230 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2018-07-13 Kugan Vivekanandarajah <kuganv@linaro.org> + Richard Biener <rguenther@suse.de> + + PR middle-end/86489 + * tree-ssa-loop-niter.c (number_of_iterations_popcount): Check + that the loop latch destination where phi is defined. + 2018-07-12 Kito Cheng <kito.cheng@gmail.com> * config/riscv/riscv.c (enum riscv_privilege_levels): Add UNKNOWN_MODE. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a5ace64..9d6c7cc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-07-13 Kugan Vivekanandarajah <kuganv@linaro.org> + + PR middle-end/86489 + * gcc.dg/pr86489.c: New test. + 2018-07-12 Martin Sebor <msebor@redhat.com> PR testsuite/86510 diff --git a/gcc/testsuite/gcc.dg/pr86489.c b/gcc/testsuite/gcc.dg/pr86489.c new file mode 100644 index 0000000..c7e5573 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr86489.c @@ -0,0 +1,12 @@ + +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +int a = 0, b = 0; +void fn1() { + int c = 0; + for (; a; a--) + c += b; + while ((c - 1) & c) + ; +} diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index f6fa2f7..fbdf838 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2555,6 +2555,7 @@ number_of_iterations_popcount (loop_p loop, edge exit, ... = PHI <b_5(2), b_6(3)>. */ gimple *phi = SSA_NAME_DEF_STMT (b_11); if (gimple_code (phi) != GIMPLE_PHI + || (gimple_bb (phi) != loop_latch_edge (loop)->dest) || (gimple_assign_lhs (and_stmt) != gimple_phi_arg_def (phi, loop_latch_edge (loop)->dest_idx))) return false; |