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| author | Jose E. Marchesi <jose.marchesi@oracle.com> | 2024-01-27 20:08:12 +0100 |
|---|---|---|
| committer | Jose E. Marchesi <jose.marchesi@oracle.com> | 2024-01-27 20:08:12 +0100 |
| commit | f64448f4ff1c671778a1d7d7678a281c6bc6450e (patch) | |
| tree | b6d9d7ef8bf372922c300340237a04db0d60e3f9 | |
| parent | ce61de1b8a1bb3a22118e900376f380768f2ba59 (diff) | |
| download | gcc-f64448f4ff1c671778a1d7d7678a281c6bc6450e.zip gcc-f64448f4ff1c671778a1d7d7678a281c6bc6450e.tar.gz gcc-f64448f4ff1c671778a1d7d7678a281c6bc6450e.tar.bz2 | |
bpf: add constant pointer to helper-skb-ancestor-cgroup-id.c test
The purpose of this test is to make sure that constant propagation is
achieved with the proper optimization level, so a BPF call instruction
to a kernel helper is generated. This patch updates the patch so it
also covers kernel helpers defined with constant static pointers.
The motivation for this patch is:
https://lore.kernel.org/bpf/20240127185031.29854-1-jose.marchesi@oracle.com/T/#u
Tested in bpf-unknown-none target x86_64-linux-gnu host.
gcc/testsuite/ChangeLog
* gcc.target/bpf/helper-skb-ancestor-cgroup-id.c: Add constant
version of kernel helper static pointer.
| -rw-r--r-- | gcc/testsuite/gcc.target/bpf/helper-skb-ancestor-cgroup-id.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/testsuite/gcc.target/bpf/helper-skb-ancestor-cgroup-id.c b/gcc/testsuite/gcc.target/bpf/helper-skb-ancestor-cgroup-id.c index 693f390..075dbe6 100644 --- a/gcc/testsuite/gcc.target/bpf/helper-skb-ancestor-cgroup-id.c +++ b/gcc/testsuite/gcc.target/bpf/helper-skb-ancestor-cgroup-id.c @@ -5,6 +5,7 @@ struct __sk_buff; static uint64_t (*bpf_skb_ancestor_cgroup_id)(struct __sk_buff *skb, int ancestor_level) = (void *) 83; +static uint64_t (* const const_bpf_skb_ancestor_cgroup_id)(struct __sk_buff *skb, int ancestor_level) = (void *) 84; void foo () @@ -13,7 +14,9 @@ foo () void *skb; int ancestor_level; - ret = bpf_skb_ancestor_cgroup_id (skb, ancestor_level); + ret = bpf_skb_ancestor_cgroup_id (skb, ancestor_level) + + const_bpf_skb_ancestor_cgroup_id (skb, ancestor_level); } /* { dg-final { scan-assembler "call\t83" } } */ +/* { dg-final { scan-assembler "call\t84" } } */ |