https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128366
Bug ID: 128366
Summary: [17 Regression][gcn]
libgomp.oacc-c-c++-common/vprop-2.c: Could not
allocate memory for GCN kernel arena since
r17-5759-g08f4049fce9362
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: ams at gcc dot gnu.org
Target Milestone: ---
Target: gcn
$ gcc -foffload=amdgcn-amdhsa -fopenacc -O2 libgomp.oacc-c-c++-common/vprop-2.c
$ ./a.out
libgomp: GCN fatal error: Could not allocate memory for GCN kernel arena
Runtime message: HSA_STATUS_ERROR_INVALID_ALLOCATION: The requested allocation
is not valid.
As bisecting shows:
Since r17-5759-g08f4049fce9362
Author: Andrew Stubbs
Date: Thu Oct 29 16:00:00 2026 +0000
amdgcn, libgomp: Avoid power-of-two stack stride in GCN plugin
(It fails here for -O2 -O1 and -O0, albeit in between I had PASS for -O0 and
only fails for -O2, no idea whether by chance or some later patch made it work
again with -O0. - The weekend automatic run had it also for -O0.)
