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tests/tcg/arm: Use vmrs/vmsr instead of mcr/mrc 

Clang 14 generates

/home/rth/qemu/src/tests/tcg/arm/fcvt.c:431:9: error: invalid operand for instruction
    asm("mrc p10, 7, r1, cr1, cr0, 0\n\t"
        ^
<inline asm>:1:6: note: instantiated into assembly here
        mrc p10, 7, r1, cr1, cr0, 0
            ^
/home/rth/qemu/src/tests/tcg/arm/fcvt.c:432:32: error: invalid operand for instruction
        "orr r1, r1, %[flags]\n\t"
                               ^
<inline asm>:3:6: note: instantiated into assembly here
        mcr p10, 7, r1, cr1, cr0, 0
            ^

This is perhaps a clang bug, but using the neon mnemonic is clearer.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20240630190050.160642-14-richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-19-alex.bennee@linaro.org>
This commit is contained in:
Richard Henderson 2024-07-05 09:40:25 +01:00 committed by Alex Bennée
parent e3693cd3c9
commit 2f93ff3113
1 changed files with 2 additions and 3 deletions
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5
tests/tcg/arm/fcvt.c
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@ -427,10 +427,9 @@ int main(int argc, char *argv[argc])
/* And now with ARM alternative FP16 */
#if defined(__arm__)
/* See glibc sysdeps/arm/fpu_control.h */
asm("mrc p10, 7, r1, cr1, cr0, 0\n\t"
asm("vmrs r1, fpscr\n\t"
"orr r1, r1, %[flags]\n\t"
"mcr p10, 7, r1, cr1, cr0, 0\n\t"
"vmsr fpscr, r1"
: /* no output */ : [flags] "n" (1 << 26) : "r1" );
#else
asm("mrs x1, fpcr\n\t"