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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-10-13 09:58:23 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-10-13 09:58:23 +0000 |
| commit | 8649149a3cdf939cf5d74da35eae6eb4802f9cd8 (patch) | |
| tree | 00cfb30f3cf9eb032dc83d729b0f9afda961e1c7 /gcc/graphite.c | |
| parent | 250a60f3879d2d508d0d08e9da1dfa1648e1a369 (diff) | |
| download | gcc-8649149a3cdf939cf5d74da35eae6eb4802f9cd8.zip gcc-8649149a3cdf939cf5d74da35eae6eb4802f9cd8.tar.gz gcc-8649149a3cdf939cf5d74da35eae6eb4802f9cd8.tar.bz2 | |
Prevent invalid register mode changes in combine
This patch stops combine from changing the mode of an existing register
in-place if doing so would change the size of the underlying register
allocation size, as given by REGMODE_NATURAL_SIZE. Without this,
many tests fail in adjust_reg_mode after SVE is added. One example
is gcc.c-torture/compile/20090401-1.c.
2017-10-13 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* combine.c (can_change_dest_mode): Reject changes in
REGMODE_NATURAL_SIZE.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253717
Diffstat (limited to 'gcc/graphite.c')
0 files changed, 0 insertions, 0 deletions