[PATCH v2 6/6] tests/tcg/arm: Manually bit-cast half-precision numbers

Akihiko Odaki posted 6 patches 5 months ago
Maintainers: Peter Maydell <peter.maydell@linaro.org>
There is a newer version of this series
[PATCH v2 6/6] tests/tcg/arm: Manually bit-cast half-precision numbers
Posted by Akihiko Odaki 5 months ago
clang version 18.1.6 does not allow specifying an integer as the value
of a single-precision register. Manually bit-cast into float with vmov
first.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 tests/tcg/arm/fcvt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/tcg/arm/fcvt.c b/tests/tcg/arm/fcvt.c
index 157790e67961..14c9bb669c91 100644
--- a/tests/tcg/arm/fcvt.c
+++ b/tests/tcg/arm/fcvt.c
@@ -355,7 +355,9 @@ 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));
+        float tmp;
+        asm("vmov %0, %1" : "=w" (tmp) : "r" (input));
+        asm("vcvtb.f32.f16 %0, %1" : "=w" (output) : "x" (tmp));
 #else
         asm("fcvt %s0, %h1" : "=w" (output) : "w" (input));
 #endif

-- 
2.45.2