| commit | 300a3ce5c5695eb1a7c0476e9d1b45420a463248 | |
| author | Andreas Krebbel <krebbel@gcc.gnu.org> | |
| Mon, 11 Jan 2021 09:59:43 +0000 (11 10:59 +0100) | ||
| committer | Richard Biener <rguenther@suse.de> | |
| Mon, 11 Jan 2021 10:46:31 +0000 (11 11:46 +0100) | ||
| tree | a16eee1a253605fa99a03098828223be1801e9f8 | treesnapshot (tar.gz zip) |
| parent | 0c18faac3fb407d182dfa82426d1be7cce587926 | commitdiff |
tree-optimization/98221 - fix wrong unpack operation used for big-endian
The vec-abi-varargs-1.c testcase on IBM Z currently fails.
While adding an SI mode vector to a DI mode vector the first is unpacked using:
_28 = BIT_INSERT_EXPR <{ 0, 0, 0, 0 }, _2, 0>;
_34 = [vec_unpack_lo_expr] _28;
However, on big endian targets lo refers to the right hand side of the vector - in this case the zeroes.
2021-01-11 Andreas Krebbel <krebbel@linux.ibm.com>
* tree-ssa-forwprop.c (simplify_vector_constructor): For
big-endian, use UNPACK[_FLOAT]_HI.
The vec-abi-varargs-1.c testcase on IBM Z currently fails.
While adding an SI mode vector to a DI mode vector the first is unpacked using:
_28 = BIT_INSERT_EXPR <{ 0, 0, 0, 0 }, _2, 0>;
_34 = [vec_unpack_lo_expr] _28;
However, on big endian targets lo refers to the right hand side of the vector - in this case the zeroes.
2021-01-11 Andreas Krebbel <krebbel@linux.ibm.com>
* tree-ssa-forwprop.c (simplify_vector_constructor): For
big-endian, use UNPACK[_FLOAT]_HI.
| gcc/tree-ssa-forwprop.c | diffblobblamehistory |