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tests/tcg/arm: Manually register allocate half-precision numbers

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Clang does not allow specifying an integer as the value of a single
precision register.  Explicitly move value from a general register.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
[rth: Use one single inline asm block.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20240630190050.160642-12-richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-17-alex.bennee@linaro.org>
This commit is contained in:
Akihiko Odaki 2024-07-05 09:40:23 +01:00 • committed by Alex Bennée
parent 40126a16bd
commit 1e7c9ba4a2
1 changed files with 6 additions and 1 deletions
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7
tests/tcg/arm/fcvt.c
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@ -355,7 +355,12 @@ static void convert_half_to_single(void)
print_half_number(i, input); print_half_number(i, input);
#if defined(__arm__) #if defined(__arm__)
asm("vcvtb.f32.f16 %0, %1" : "=w" (output) : "x" ((uint32_t)input)); /*
* Clang refuses to allocate an integer to a fp register.
* Perform the move from a general register by hand.
*/
asm("vmov %0, %1\n\t"
"vcvtb.f32.f16 %0, %0" : "=w" (output) : "r" (input));
#else #else
asm("fcvt %s0, %h1" : "=w" (output) : "w" (input)); asm("fcvt %s0, %h1" : "=w" (output) : "w" (input));
#endif #endif