* [PATCH] Fix some GC issues in the aarch64 back-end.
@ 2021-09-03 5:24 apinski
2021-09-03 9:47 ` Richard Sandiford
0 siblings, 1 reply; 2+ messages in thread
From: apinski @ 2021-09-03 5:24 UTC (permalink / raw)
To: gcc-patches; +Cc: Andrew Pinski
From: Andrew Pinski <apinski@marvell.com>
I got some ICEs in my latest testsing while running the libstdc++ testsuite.
I had noticed the problem was connected to types and had just touched the
builtins code but nothing which could have caused this and I looked for
some types/variables that were not being marked with GTY.
OK? Bootstrapped and tested on aarch64-linux-gnu with no regressions.
gcc/ChangeLog:
* config/aarch64/aarch64-builtins.c (struct aarch64_simd_type_info):
Mark with GTY.
(aarch64_simd_types): Likewise.
(aarch64_simd_intOI_type_node): Likewise.
(aarch64_simd_intCI_type_node): Likewise.
(aarch64_simd_intXI_type_node): Likewise.
* config/aarch64/aarch64.h (aarch64_fp16_type_node): Likewise.
(aarch64_fp16_ptr_type_node): Likewise.
(aarch64_bf16_type_node): Likewise.
(aarch64_bf16_ptr_type_node): Likewise.
---
gcc/config/aarch64/aarch64-builtins.c | 10 +++++-----
gcc/config/aarch64/aarch64.h | 8 ++++----
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-builtins.c b/gcc/config/aarch64/aarch64-builtins.c
index d441437..9f37a71 100644
--- a/gcc/config/aarch64/aarch64-builtins.c
+++ b/gcc/config/aarch64/aarch64-builtins.c
@@ -594,7 +594,7 @@ enum aarch64_simd_type
};
#undef ENTRY
-struct aarch64_simd_type_info
+struct GTY(()) aarch64_simd_type_info
{
enum aarch64_simd_type type;
@@ -626,14 +626,14 @@ struct aarch64_simd_type_info
#define ENTRY(E, M, Q, G) \
{E, "__" #E, #G "__" #E, NULL_TREE, NULL_TREE, E_##M##mode, qualifier_##Q},
-static struct aarch64_simd_type_info aarch64_simd_types [] = {
+static GTY(()) struct aarch64_simd_type_info aarch64_simd_types [] = {
#include "aarch64-simd-builtin-types.def"
};
#undef ENTRY
-static tree aarch64_simd_intOI_type_node = NULL_TREE;
-static tree aarch64_simd_intCI_type_node = NULL_TREE;
-static tree aarch64_simd_intXI_type_node = NULL_TREE;
+static GTY(()) tree aarch64_simd_intOI_type_node = NULL_TREE;
+static GTY(()) tree aarch64_simd_intCI_type_node = NULL_TREE;
+static GTY(()) tree aarch64_simd_intXI_type_node = NULL_TREE;
/* The user-visible __fp16 type, and a pointer to that type. Used
across the back-end. */
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index bfffbcd..a5ba6c2 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -1262,13 +1262,13 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
/* This type is the user-visible __fp16, and a pointer to that type. We
need it in many places in the backend. Defined in aarch64-builtins.c. */
-extern tree aarch64_fp16_type_node;
-extern tree aarch64_fp16_ptr_type_node;
+extern GTY(()) tree aarch64_fp16_type_node;
+extern GTY(()) tree aarch64_fp16_ptr_type_node;
/* This type is the user-visible __bf16, and a pointer to that type. Defined
in aarch64-builtins.c. */
-extern tree aarch64_bf16_type_node;
-extern tree aarch64_bf16_ptr_type_node;
+extern GTY(()) tree aarch64_bf16_type_node;
+extern GTY(()) tree aarch64_bf16_ptr_type_node;
/* The generic unwind code in libgcc does not initialize the frame pointer.
So in order to unwind a function using a frame pointer, the very first
--
1.8.3.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] Fix some GC issues in the aarch64 back-end.
2021-09-03 5:24 [PATCH] Fix some GC issues in the aarch64 back-end apinski
@ 2021-09-03 9:47 ` Richard Sandiford
0 siblings, 0 replies; 2+ messages in thread
From: Richard Sandiford @ 2021-09-03 9:47 UTC (permalink / raw)
To: apinski--- via Gcc-patches; +Cc: apinski
apinski--- via Gcc-patches <gcc-patches@gcc.gnu.org> writes:
> From: Andrew Pinski <apinski@marvell.com>
>
> I got some ICEs in my latest testsing while running the libstdc++ testsuite.
> I had noticed the problem was connected to types and had just touched the
> builtins code but nothing which could have caused this and I looked for
> some types/variables that were not being marked with GTY.
>
> OK? Bootstrapped and tested on aarch64-linux-gnu with no regressions.
OK. I'm a bit surprised this makes a difference, since I'd have
expected the builtin function definitions to keep the types live.
I agree the change is clearly correct though. We shouldn't be relying
on indirect marking.
Thanks,
Richard
>
> gcc/ChangeLog:
>
> * config/aarch64/aarch64-builtins.c (struct aarch64_simd_type_info):
> Mark with GTY.
> (aarch64_simd_types): Likewise.
> (aarch64_simd_intOI_type_node): Likewise.
> (aarch64_simd_intCI_type_node): Likewise.
> (aarch64_simd_intXI_type_node): Likewise.
> * config/aarch64/aarch64.h (aarch64_fp16_type_node): Likewise.
> (aarch64_fp16_ptr_type_node): Likewise.
> (aarch64_bf16_type_node): Likewise.
> (aarch64_bf16_ptr_type_node): Likewise.
> ---
> gcc/config/aarch64/aarch64-builtins.c | 10 +++++-----
> gcc/config/aarch64/aarch64.h | 8 ++++----
> 2 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/gcc/config/aarch64/aarch64-builtins.c b/gcc/config/aarch64/aarch64-builtins.c
> index d441437..9f37a71 100644
> --- a/gcc/config/aarch64/aarch64-builtins.c
> +++ b/gcc/config/aarch64/aarch64-builtins.c
> @@ -594,7 +594,7 @@ enum aarch64_simd_type
> };
> #undef ENTRY
>
> -struct aarch64_simd_type_info
> +struct GTY(()) aarch64_simd_type_info
> {
> enum aarch64_simd_type type;
>
> @@ -626,14 +626,14 @@ struct aarch64_simd_type_info
>
> #define ENTRY(E, M, Q, G) \
> {E, "__" #E, #G "__" #E, NULL_TREE, NULL_TREE, E_##M##mode, qualifier_##Q},
> -static struct aarch64_simd_type_info aarch64_simd_types [] = {
> +static GTY(()) struct aarch64_simd_type_info aarch64_simd_types [] = {
> #include "aarch64-simd-builtin-types.def"
> };
> #undef ENTRY
>
> -static tree aarch64_simd_intOI_type_node = NULL_TREE;
> -static tree aarch64_simd_intCI_type_node = NULL_TREE;
> -static tree aarch64_simd_intXI_type_node = NULL_TREE;
> +static GTY(()) tree aarch64_simd_intOI_type_node = NULL_TREE;
> +static GTY(()) tree aarch64_simd_intCI_type_node = NULL_TREE;
> +static GTY(()) tree aarch64_simd_intXI_type_node = NULL_TREE;
>
> /* The user-visible __fp16 type, and a pointer to that type. Used
> across the back-end. */
> diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
> index bfffbcd..a5ba6c2 100644
> --- a/gcc/config/aarch64/aarch64.h
> +++ b/gcc/config/aarch64/aarch64.h
> @@ -1262,13 +1262,13 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
>
> /* This type is the user-visible __fp16, and a pointer to that type. We
> need it in many places in the backend. Defined in aarch64-builtins.c. */
> -extern tree aarch64_fp16_type_node;
> -extern tree aarch64_fp16_ptr_type_node;
> +extern GTY(()) tree aarch64_fp16_type_node;
> +extern GTY(()) tree aarch64_fp16_ptr_type_node;
>
> /* This type is the user-visible __bf16, and a pointer to that type. Defined
> in aarch64-builtins.c. */
> -extern tree aarch64_bf16_type_node;
> -extern tree aarch64_bf16_ptr_type_node;
> +extern GTY(()) tree aarch64_bf16_type_node;
> +extern GTY(()) tree aarch64_bf16_ptr_type_node;
>
> /* The generic unwind code in libgcc does not initialize the frame pointer.
> So in order to unwind a function using a frame pointer, the very first
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2021-09-03 9:47 ` Richard Sandiford
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