From: Akihiko Odaki Date: Fri, 5 Jul 2024 08:40:23 +0000 (+0100) Subject: tests/tcg/arm: Manually register allocate half-precision numbers X-Git-Tag: qemu-xen-4.20.0~85^2~24 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1e7c9ba4a24d97dfeb59de2c0ac158c749945abc;p=qemu-xen.git tests/tcg/arm: Manually register allocate half-precision numbers 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 [rth: Use one single inline asm block.] Signed-off-by: Richard Henderson Reviewed-by: Akihiko Odaki Message-Id: <20240630190050.160642-12-richard.henderson@linaro.org> Signed-off-by: Alex Bennée Message-Id: <20240705084047.857176-17-alex.bennee@linaro.org> --- diff --git a/tests/tcg/arm/fcvt.c b/tests/tcg/arm/fcvt.c index 157790e679..d8c61cd29f 100644 --- a/tests/tcg/arm/fcvt.c +++ b/tests/tcg/arm/fcvt.c @@ -355,7 +355,12 @@ static void convert_half_to_single(void) print_half_number(i, input); #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 asm("fcvt %s0, %h1" : "=w" (output) : "w" (input)); #endif