[gcc/devel/rust/master] Merge #1435

[Thomas Schwinge]

https://gcc.gnu.org/g:8725e324aad3eac0df074e5f0a494b5e3f332a31

commit 8725e324aad3eac0df074e5f0a494b5e3f332a31
Merge: a39108dea1d f70783d0633
Author: bors[bot] <26634292+bors[bot]@users.noreply.github.com>
Date:   Fri Aug 5 12:42:24 2022 +0000

    Merge #1435
    
    1435: Update the type hasher to stop duplication of aggregate types r=philberty a=philberty
    
    The hasher we ported was always calling TYPE_HASH which ends up with
    DECL_UID which is geneated causing aggregate types keep having a unique
    hash which ends up confusing the middle end as two copy's of the same
    aggegate type ends up making GCC think there is some kind of type
    conversion required here.
    
    Fixes #1434
    
    Co-authored-by: Philip Herron <philip.herron@embecosm.com>

Diff:

 gcc/rust/backend/rust-compile-context.cc         | 13 ++++--
 gcc/testsuite/rust/compile/torture/issue-1434.rs | 53 ++++++++++++++++++++++++
 2 files changed, 63 insertions(+), 3 deletions(-)