diff options
| author | Richard Biener <rguenther@suse.de> | 2019-10-07 07:53:45 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2019-10-07 07:53:45 +0000 |
| commit | 806bdf4e40d31cf55744c876eb9f17654de36b99 (patch) | |
| tree | 6dc6ccd9075dc7a84dfda6fb6ba4c80c1786f6b9 /gcc/tree-ssa-loop-ivcanon.c | |
| parent | 3e1f7c33aeaf33ca532fbef745bb4ab1e3b0aa3f (diff) | |
| download | gcc-806bdf4e40d31cf55744c876eb9f17654de36b99.zip gcc-806bdf4e40d31cf55744c876eb9f17654de36b99.tar.gz gcc-806bdf4e40d31cf55744c876eb9f17654de36b99.tar.bz2 | |
re PR tree-optimization/91975 (worse code for small array copy using pointer arithmetic than array indexing)
2019-10-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/91975
* tree-ssa-loop-ivcanon.c (constant_after_peeling): Consistently
handle invariants.
* g++.dg/tree-ssa/ivopts-3.C: Adjust.
* gcc.dg/vect/vect-profile-1.c: Disable cunrolli.
* gcc.dg/vect/vect-double-reduc-6.c: Disable unrolling of
the innermost loop.
* gcc.dg/vect/vect-93.c: Likewise.
* gcc.dg/vect/vect-105.c: Likewise.
* gcc.dg/vect/pr79920.c: Likewise.
* gcc.dg/vect/no-vfa-vect-102.c: Likewise.
* gcc.dg/vect/no-vfa-vect-101.c: Likewise.
* gcc.dg/vect/pr83202-1.c: Operate on a larger array.
* gfortran.dg/vect/vect-8.f90: Likewise.
* gcc.dg/tree-ssa/cunroll-2.c: Scan early unrolling dump instead
of late one.
From-SVN: r276645
Diffstat (limited to 'gcc/tree-ssa-loop-ivcanon.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivcanon.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gcc/tree-ssa-loop-ivcanon.c b/gcc/tree-ssa-loop-ivcanon.c index 5952cad..d38959c 100644 --- a/gcc/tree-ssa-loop-ivcanon.c +++ b/gcc/tree-ssa-loop-ivcanon.c @@ -195,9 +195,8 @@ constant_after_peeling (tree op, gimple *stmt, class loop *loop) /* Induction variables are constants when defined in loop. */ if (loop_containing_stmt (stmt) != loop) return false; - tree ev = analyze_scalar_evolution (loop, op); - if (chrec_contains_undetermined (ev) - || chrec_contains_symbols (ev)) + tree ev = instantiate_parameters (loop, analyze_scalar_evolution (loop, op)); + if (chrec_contains_undetermined (ev)) return false; return true; } |