https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104456
Bug ID: 104456
Summary: nvptx: prevent_branch_around_nothing doesn't handle
asm ("")
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
Testing on a GT 1030, with driver 510.x, GOMP_NVPTX_JIT=-00 and -mptx=3.1, I
run into:
...
FAIL: libgomp.oacc-c/../libgomp.oacc-c-c++-common/acc_prof-version-1.c
-DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2
execution test
...
The test-case runs into the warp divergence check, because we have:
...
@ %r23 bra $L2;
$L2:
...
The prevent_branch_around_nothing is supposed to handle this, but it doesn't
trigger for 'asm ("")'.
