Hi Wilco,
> On 10 Jan 2025, at 15:05, Wilco Dijkstra <wilco.dijks...@arm.com> wrote:
>
>
> ILP32 was originally intended to make porting to AArch64 easier. Support was
> never merged in the Linux kernel or GLIBC, so it has been unsupported for many
> years. There isn't a benefit in keeping unsupported features forever, so
> deprecate it now (and it could be removed in a future release).
>
> Passes regress & bootstrap, OK for commit?
I agree on that front for Linux, but I thought using it for bare-metal/embedded
cases is still supported?
I haven’t tested in a while but the aarch64-none-elf newlib target used to work
fine with -mabi=ilp32.
Would it make sense to deprecate it for Linux/glibc targets i.e. deprecate the
aarch64*-linux-gnu_ilp32 platform instead?
Thanks,
Kyrill
>
> gcc:
> * config/aarch64/aarch64.cc (aarch64_override_options): Add warning.
> * doc/invoke.texi: Document -mabi=ilp32 as deprecated.
>
> gcc/testsuite:
> * gcc.target/aarch64/inline-mem-set-pr112804.c: Add -Wno-deprecated.
> * gcc.target/aarch64/pr100518.c: Likewise.
> * gcc.target/aarch64/pr113114.c: Likewise.
> * gcc.target/aarch64/pr80295.c: Likewise.
> * gcc.target/aarch64/pr94201.c: Likewise.
> * gcc.target/aarch64/pr94577.c: Likewise.
> * gcc.target/aarch64/sve/pr108603.c: Likewise.
>
> ---
>
> diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
> index
> 78d2cc4bbe4933c79153d0741bfd8d7b076952d0..02891b0a8ed75eb596df9d0dbff77ccd6a625f11
> 100644
> --- a/gcc/config/aarch64/aarch64.cc
> +++ b/gcc/config/aarch64/aarch64.cc
> @@ -19315,6 +19315,8 @@ aarch64_override_options (void)
> if (TARGET_ILP32)
> error ("assembler does not support %<-mabi=ilp32%>");
> #endif
> + if (TARGET_ILP32)
> + warning (OPT_Wdeprecated, "%<-mabi=ilp32%> is deprecated.");
>
> /* Convert -msve-vector-bits to a VG count. */
> aarch64_sve_vg = aarch64_convert_sve_vector_bits (aarch64_sve_vector_bits);
> diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
> index
> 17fe2c64c1f85ad8db8b61f040aafe5f8212e488..6722ad5281541e499d5b3916179d9a4d1b39097f
> 100644
> --- a/gcc/doc/invoke.texi
> +++ b/gcc/doc/invoke.texi
> @@ -21472,6 +21472,8 @@ The default depends on the specific target
> configuration. Note that
> the LP64 and ILP32 ABIs are not link-compatible; you must compile your
> entire program with the same ABI, and link with a compatible set of libraries.
>
> +@samp{ilp32} is deprecated.
> +
> @opindex mbig-endian
> @item -mbig-endian
> Generate big-endian code. This is the default when GCC is configured for an
> diff --git a/gcc/testsuite/gcc.target/aarch64/inline-mem-set-pr112804.c
> b/gcc/testsuite/gcc.target/aarch64/inline-mem-set-pr112804.c
> index
> fe8414559864db4a8584fd3f5a7145b5e3d1f322..276c10cd0e86ff2c74a5c09ce70f7d76614978ec
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/inline-mem-set-pr112804.c
> +++ b/gcc/testsuite/gcc.target/aarch64/inline-mem-set-pr112804.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-finline-stringops -mabi=ilp32
> -ftrivial-auto-var-init=zero" } */
> +/* { dg-options "-finline-stringops -mabi=ilp32 -Wno-deprecated
> -ftrivial-auto-var-init=zero" } */
>
> short m(unsigned k) {
> const unsigned short *n[65];
> diff --git a/gcc/testsuite/gcc.target/aarch64/pr100518.c
> b/gcc/testsuite/gcc.target/aarch64/pr100518.c
> index
> 5ca599f5d2e0e1603456b2eaf2e98866871faad1..177991cfb2289530e4ee3e3633fddde5972e9e28
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/pr100518.c
> +++ b/gcc/testsuite/gcc.target/aarch64/pr100518.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-mabi=ilp32 -mstrict-align -O2" } */
> +/* { dg-options "-mabi=ilp32 -Wno-deprecated -mstrict-align -O2" } */
>
> int unsigned_range_min, unsigned_range_max, a11___trans_tmp_1;
>
> diff --git a/gcc/testsuite/gcc.target/aarch64/pr113114.c
> b/gcc/testsuite/gcc.target/aarch64/pr113114.c
> index
> 5b0383c24359ad95c7d333a6f18b98e50383f71b..976e2db71bfafe96e3729e4d4bc333874d98c084
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/pr113114.c
> +++ b/gcc/testsuite/gcc.target/aarch64/pr113114.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-mabi=ilp32 -O -mearly-ldp-fusion -mlate-ldp-fusion" } */
> +/* { dg-options "-mabi=ilp32 -Wno-deprecated -O -mearly-ldp-fusion
> -mlate-ldp-fusion" } */
> void foo_n(double *a) {
> int i = 1;
> for (; i < (int)foo_n; i++)
> diff --git a/gcc/testsuite/gcc.target/aarch64/pr80295.c
> b/gcc/testsuite/gcc.target/aarch64/pr80295.c
> index
> b3866d8d6a9e5688f0eedb2fd7504547c412afa2..c79427517d0e61417dd5c0013f8db04ed91da449
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/pr80295.c
> +++ b/gcc/testsuite/gcc.target/aarch64/pr80295.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-mabi=ilp32" } */
> +/* { dg-options "-mabi=ilp32 -Wno-deprecated" } */
>
> void f (void *b)
> {
> diff --git a/gcc/testsuite/gcc.target/aarch64/pr94201.c
> b/gcc/testsuite/gcc.target/aarch64/pr94201.c
> index
> 3b9b79059e02b21c652726abb86d124274b6547c..cd21f7c06690219410a78eb824fd140627df3354
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/pr94201.c
> +++ b/gcc/testsuite/gcc.target/aarch64/pr94201.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-mcmodel=tiny -mabi=ilp32 -fPIC" } */
> +/* { dg-options "-mcmodel=tiny -mabi=ilp32 -Wno-deprecated -fPIC" } */
> /* { dg-require-effective-target fpic } */
>
> extern int bar (void *);
> diff --git a/gcc/testsuite/gcc.target/aarch64/pr94577.c
> b/gcc/testsuite/gcc.target/aarch64/pr94577.c
> index
> d51799fb0bb67999ed1374e2d65a2b0d353b310a..49cb6e10aa5ddbbf35a3ba331afddfb6679a8092
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/pr94577.c
> +++ b/gcc/testsuite/gcc.target/aarch64/pr94577.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-mcmodel=large -mabi=ilp32 -fno-pie" } */
> +/* { dg-options "-mcmodel=large -mabi=ilp32 -Wno-deprecated -fno-pie" } */
>
> void
> foo ()
> diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pr108603.c
> b/gcc/testsuite/gcc.target/aarch64/sve/pr108603.c
> index
> a2aea9f0b12bfa9a491e32577140e28f89c3392d..18aa4cfe7f72f6767919b1612568b6164e4f3b7d
> 100644
> --- a/gcc/testsuite/gcc.target/aarch64/sve/pr108603.c
> +++ b/gcc/testsuite/gcc.target/aarch64/sve/pr108603.c
> @@ -1,4 +1,4 @@
> -/* { dg-options "-O2 -mabi=ilp32 -fdata-sections" } */
> +/* { dg-options "-O2 -mabi=ilp32 -Wno-deprecated -fdata-sections" } */
>
> int a[128];
> long long *p;
>
