Akihiko Odaki <[email protected]> writes:
> sme-smopa-2.c requires sme-i16i64 but the compiler option used not to
> specify it. Instead, the extension was specified with the inline
> assembly, resulting in mixing assembly code targeting sme-i1664 and C
> code that does not target sme-i1664.
>
> clang version 18.1.6 does not support such mixing so properly specify
> the extension with the compiler option instead.
I think we need fixes for older clangs supported by our distros as well:
16:08:26 [alex@aarch64:~/l/q/b/all.clang] plugins/next|✚1…(+0/-0) 2 + clang
--version
Ubuntu clang version 14.0.0-1ubuntu1.1
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Gives:
tests/tcg/aarch64-linux-user: -Wa,-march=armv9-a+sme-i16i64 detected
/home/alex/lsrc/qemu.git/tests/tcg/aarch64/sme-smopa-1.c:17:19: error:
instruction requires: sve or sme
"smstart\n\t"
^
<inline asm>:3:2: note: instantiated into assembly here
index z0.b, #0, #1
^
/home/alex/lsrc/qemu.git/tests/tcg/aarch64/sme-smopa-1.c:18:30: error:
instruction requires: sve or sme
"index z0.b, #0, #1\n\t"
^
<inline asm>:4:2: note: instantiated into assembly here
movprfx z1, z0
^
/home/alex/lsrc/qemu.git/tests/tcg/aarch64/sme-smopa-1.c:19:26: error:
instruction requires: sve or sme
"movprfx z1, z0\n\t"
^
<inline asm>:5:2: note: instantiated into assembly here
add z1.b, z1.b, #16
^
/home/alex/lsrc/qemu.git/tests/tcg/aarch64/sme-smopa-1.c:20:31: error:
instruction requires: sve or sme
"add z1.b, z1.b, #16\n\t"
^
<inline asm>:6:2: note: instantiated into assembly here
ptrue p0.b
^
/home/alex/lsrc/qemu.git/tests/tcg/aarch64/sme-smopa-1.c:22:47: error:
instruction requires: sve or sme
"smopa za0.s, p0/m, p0/m, z0.b, z1.b\n\t"
^
<inline asm>:8:2: note: instantiated into assembly here
ptrue p0.s, vl4
^
5 errors generated.
>
> Signed-off-by: Akihiko Odaki <[email protected]>
> ---
> tests/tcg/aarch64/sme-smopa-2.c | 2 +-
> tests/tcg/aarch64/Makefile.target | 12 ++++++++++--
> 2 files changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/tests/tcg/aarch64/sme-smopa-2.c b/tests/tcg/aarch64/sme-smopa-2.c
> index c9f48c3bfca2..2c9707065992 100644
> --- a/tests/tcg/aarch64/sme-smopa-2.c
> +++ b/tests/tcg/aarch64/sme-smopa-2.c
> @@ -14,7 +14,7 @@ int main()
> long svl;
>
> /* Validate that we have a wide enough vector for 4 elements. */
> - asm(".arch armv8-r+sme-i64\n\trdsvl %0, #1" : "=r"(svl));
> + asm("rdsvl %0, #1" : "=r"(svl));
> if (svl < 32) {
> return 0;
> }
> diff --git a/tests/tcg/aarch64/Makefile.target
> b/tests/tcg/aarch64/Makefile.target
> index 70d728ae9af7..f53a1d615c21 100644
> --- a/tests/tcg/aarch64/Makefile.target
> +++ b/tests/tcg/aarch64/Makefile.target
> @@ -27,7 +27,8 @@ config-cc.mak: Makefile
> $(call cc-option,-march=armv8.5-a,
> CROSS_CC_HAS_ARMV8_5); \
> $(call cc-option,-mbranch-protection=standard,
> CROSS_CC_HAS_ARMV8_BTI); \
> $(call cc-option,-march=armv8.5-a+memtag,
> CROSS_CC_HAS_ARMV8_MTE); \
> - $(call cc-option,-Wa$(COMMA)-march=armv9-a+sme,
> CROSS_AS_HAS_ARMV9_SME)) 3> config-cc.mak
> + $(call cc-option,-Wa$(COMMA)-march=armv9-a+sme,
> CROSS_AS_HAS_ARMV9_SME); \
> + $(call cc-option,-Wa$(COMMA)-march=armv9-a+sme-i16i64,
> CROSS_AS_HAS_ARMV9_SME_I1664)) 3> config-cc.mak
> -include config-cc.mak
>
> ifneq ($(CROSS_CC_HAS_ARMV8_2),)
> @@ -68,7 +69,14 @@ endif
>
> # SME Tests
> ifneq ($(CROSS_AS_HAS_ARMV9_SME),)
> -AARCH64_TESTS += sme-outprod1 sme-smopa-1 sme-smopa-2
> +AARCH64_TESTS += sme-outprod1 sme-smopa-1
> +sme-%: CFLAGS += -march=armv9-a+sme
> +endif
> +
> +# SME I16I64 Tests
> +ifneq ($(CROSS_AS_HAS_ARMV9_SME_I1664),)
> +AARCH64_TESTS += sme-smopa-2
> +sme-smopa-2: CFLAGS += -march=armv9-a+sme-i16i64+sme
> endif
>
> # System Registers Tests
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
