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| author | Richard Biener <rguenther@suse.de> | 2024-02-13 11:10:57 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2024-02-13 13:42:02 +0100 |
| commit | 94225dfb5623725fa519eac69338f7a632a509ae (patch) | |
| tree | c6369fed1a1833157ede8eb92f94f18da8dafc14 /gcc/expr.cc | |
| parent | efc71fd57539421c3939b1fe7594862d0fc66cdb (diff) | |
| download | gcc-94225dfb5623725fa519eac69338f7a632a509ae.zip gcc-94225dfb5623725fa519eac69338f7a632a509ae.tar.gz gcc-94225dfb5623725fa519eac69338f7a632a509ae.tar.bz2 | |
tree-optimization/113895 - copy_reference_ops_from_ref vs. bitfields
The recent enhancement to discover constant array indices by range
info used by get_ref_base_and_extent doesn't work when the outermost
component reference is to a bitfield because we track the running
offset in the reference ops as bytes. The following does as
ao_ref_init_from_vn_reference and recovers that manually, tracking
the offset for the purpose of discovering the constant array index
in bits instead.
PR tree-optimization/113895
* tree-ssa-sccvn.cc (copy_reference_ops_from_ref): Track
offset to discover constant array indices in bits, handle
COMPONENT_REF to bitfields.
* gcc.dg/torture/pr113895-1.c: New testcase.
Diffstat (limited to 'gcc/expr.cc')
0 files changed, 0 insertions, 0 deletions