On 8/2/24 6:50 AM, Richard Biener wrote:
The following fixes a compile-time/memory-hog when performing a
large aggregate copy to a small object allocated to a register.
While store_bit_field_1 called by store_integral_bit_field will
do nothign for accesses outside of the target the loop over the
source in store_integral_bit_field will still code-generate
the read parts for all words in the source. The following copies
the noop condition from store_bit_field_1 and terminates the
loop when it runs forward or avoid code-generating the read parts
when not.
Bootstrapped and tested on x86_64-unknown-linux-gnu, OK?
Thanks,
Richard.
PR middle-end/111821
* expmed.cc (store_integral_bit_field): Terminate the
word-wise copy loop when we get out of the destination
and do a forward copy. Skip the word if it would be
outside of the destination in case of a backward copy.
* gcc.dg/torture/pr111821.c: New testcase.
OK
jeff
