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| author | Andrew Pinski <quic_apinski@quicinc.com> | 2024-11-08 14:46:18 -0800 |
|---|---|---|
| committer | Andrew Pinski <quic_apinski@quicinc.com> | 2024-11-09 08:21:25 -0800 |
| commit | ed88bc2344321ee21e92afdd83b50699c4e4df79 (patch) | |
| tree | 0f3c0384cd46ba682a1c1d027d3ae57138ef5df6 /gcc/function.cc | |
| parent | 6e84a41622f56ca360d995e6092ded3b5a02ba40 (diff) | |
| download | gcc-ed88bc2344321ee21e92afdd83b50699c4e4df79.zip gcc-ed88bc2344321ee21e92afdd83b50699c4e4df79.tar.gz gcc-ed88bc2344321ee21e92afdd83b50699c4e4df79.tar.bz2 | |
fold: Remove (rrotate (rrotate A CST) CST) folding [PR117492]
This removes an (broken) simplification from fold which is already handled in match.
The reason why it was broken is because of the use of wi::to_wide on the RHS of the
rotate which could be 2 different types even though the LHS was the same type.
Since it is already handled in match (by the patterns for
`Turn (a OP c1) OP c2 into a OP (c1+c2).`). It can be removed without losing any optimizations.
Bootstrapped and tested on x86_64-linux-gnu.
PR middle-end/117492
gcc/ChangeLog:
* fold-const.cc (fold_binary_loc): Remove `Two consecutive rotates adding up
to the some integer` simplifcation.
gcc/testsuite/ChangeLog:
* gcc.dg/torture/pr117492-1.c: New test.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Diffstat (limited to 'gcc/function.cc')
0 files changed, 0 insertions, 0 deletions