diff options
| author | Richard Biener <rguenther@suse.de> | 2022-08-05 10:40:18 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2022-08-05 12:11:46 +0200 |
| commit | 36bc2a8f24f9c8f6eb2c579d520d7fc73a113ae1 (patch) | |
| tree | 9df777dd4518ab61df96e08efaa83efdb706e48b /gcc/testsuite | |
| parent | 4574dad43f77100f401375e6c9df6402e99ab682 (diff) | |
tree-optimization/106533 - loop distribution of inner loop of nestlinaro-local/ci/tcwg_kernel/gnu-master-aarch64-norov-defconfig
Loop distribution currently gives up if the outer loop of a loop
nest it analyzes contains a stmt with side-effects instead of
continuing to analyze the innermost loop. The following fixes that
by continuing anyway.
PR tree-optimization/106533
* tree-loop-distribution.cc (loop_distribution::execute): Continue
analyzing the inner loops when find_seed_stmts_for_distribution
fails.
* gcc.dg/tree-ssa/ldist-39.c: New testcase.
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ldist-39.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ldist-39.c b/gcc/testsuite/gcc.dg/tree-ssa/ldist-39.c new file mode 100644 index 00000000000..3ef72864d96 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ldist-39.c @@ -0,0 +1,16 @@ +/* PR/106533 */ +/* { dg-options "-O2 -fdump-tree-ldist-optimized" } */ + +void bar (int *a, int * __restrict b) +{ + for (int k = 0; k < 10; k++) + { + for (int j = 0; j < 100000; ++j) + a[j] = b[j]; + __builtin_printf ("Foo!"); + } +} + +/* The stmt with side-effects in the outer loop should not prevent + distribution of the inner loop of the loop nest. */ +/* { dg-final { scan-tree-dump "optimized: Loop . distributed: split to 0 loops and 1 library calls" "ldist" } } */ |