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Diffstat (limited to '0243-Backport-SME-AArch64-Fix-Armv9-a-warnings-that-get-e.patch')
| -rw-r--r-- | 0243-Backport-SME-AArch64-Fix-Armv9-a-warnings-that-get-e.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/0243-Backport-SME-AArch64-Fix-Armv9-a-warnings-that-get-e.patch b/0243-Backport-SME-AArch64-Fix-Armv9-a-warnings-that-get-e.patch new file mode 100644 index 0000000..0e4b80b --- /dev/null +++ b/0243-Backport-SME-AArch64-Fix-Armv9-a-warnings-that-get-e.patch @@ -0,0 +1,63 @@ +From a1ba437195286af3389ba9f2d43b8cb6c73ba3d8 Mon Sep 17 00:00:00 2001 +From: Tamar Christina <tamar.christina@arm.com> +Date: Thu, 12 Oct 2023 15:55:58 +0100 +Subject: [PATCH 144/157] [Backport][SME] AArch64: Fix Armv9-a warnings that + get emitted whenever a ACLE header is used. + +Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=de593b3cffdc9c030c5e697ad9092b1b085dabc4 + +At the moment, trying to use -march=armv9-a with any ACLE header such as +arm_neon.h results in rows and rows of warnings saying: + +<built-in>: warning: "__ARM_ARCH" redefined +<built-in>: note: this is the location of the previous definition + +This is obviously not useful and happens because the header was defined at +__ARM_ARCH == 8 and the commandline changes it. + +The Arm port solves this by undef the macro during argument processing and we do +the same on AArch64 for the majority of macros. However we define this macro +using a different helper which requires the manual undef. + +Thanks, +Tamar + +gcc/ChangeLog: + + * config/aarch64/aarch64-c.cc (aarch64_update_cpp_builtins): Add undef. + +gcc/testsuite/ChangeLog: + + * gcc.target/aarch64/armv9_warning.c: New test. +--- + gcc/config/aarch64/aarch64-c.cc | 1 + + gcc/testsuite/gcc.target/aarch64/armv9_warning.c | 5 +++++ + 2 files changed, 6 insertions(+) + create mode 100644 gcc/testsuite/gcc.target/aarch64/armv9_warning.c + +diff --git a/gcc/config/aarch64/aarch64-c.cc b/gcc/config/aarch64/aarch64-c.cc +index 745719d8b..2d2ac42c4 100644 +--- a/gcc/config/aarch64/aarch64-c.cc ++++ b/gcc/config/aarch64/aarch64-c.cc +@@ -129,6 +129,7 @@ aarch64_update_cpp_builtins (cpp_reader *pfile) + { + aarch64_def_or_undef (flag_unsafe_math_optimizations, "__ARM_FP_FAST", pfile); + ++ cpp_undef (pfile, "__ARM_ARCH"); + builtin_define_with_int_value ("__ARM_ARCH", AARCH64_ISA_V9A ? 9 : 8); + + builtin_define_with_int_value ("__ARM_SIZEOF_MINIMAL_ENUM", +diff --git a/gcc/testsuite/gcc.target/aarch64/armv9_warning.c b/gcc/testsuite/gcc.target/aarch64/armv9_warning.c +new file mode 100644 +index 000000000..35690d5bc +--- /dev/null ++++ b/gcc/testsuite/gcc.target/aarch64/armv9_warning.c +@@ -0,0 +1,5 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-march=armv9-a -Wpedantic -Werror" } */ ++ ++#include <arm_neon.h> ++ +-- +2.33.0 + |