diff options
| author |  Amaury Le Leyzour <amaury.leleyzour@arm.com> | 2017-03-07 16:58:08 -0800 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-04-26 22:45:15 +0000 |
| commit | ac0e705af1d68267e4f09a6486f4cb68903f7835 (patch) | |
| tree | 6af34355469d321f7c52dbcc13c4e00229bf4260 /include/private | |
| parent | b8a1392b021f480e292d66576e3da5198480845c (diff) | |
Fix new IT blocks ARMv8
ARMv8 specifies that an IT block should be followed by only one 16-bit instruction.
* SkFloatToFix is back to a C implementation that mirrors the assembly code.
* S32A_D565_Opaque_neon switched the usage of the temporary 'ip' register to let
the compiler choose what is best in the context of the IT block. And replaced
'keep_dst' by 'ip' where low register or high register does not matter.
BUG=skia:
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: If587110a0c74b637ae99460419d46cf969c694fc
Reviewed-on: https://skia-review.googlesource.com/9346
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Diffstat (limited to 'include/private')
| -rw-r--r-- | include/private/SkFixed.h | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/include/private/SkFixed.h b/include/private/SkFixed.h index b2eea5f624..6361bdaab5 100644 --- a/include/private/SkFixed.h +++ b/include/private/SkFixed.h @@ -102,19 +102,9 @@ inline SkFixed SkFixedMul_longlong(SkFixed a, SkFixed b) { */ SK_ALWAYS_INLINE SkFixed SkFloatToFixed_arm(float x) { - int32_t y, z; - asm("movs %1, %3, lsl #1 \n" - "mov %2, #0x8E \n" - "sub %1, %2, %1, lsr #24 \n" - "mov %2, %3, lsl #8 \n" - "orr %2, %2, #0x80000000 \n" - "mov %1, %2, lsr %1 \n" - "it cs \n" - "rsbcs %1, %1, #0 \n" - : "=r"(x), "=&r"(y), "=&r"(z) - : "r"(x) - : "cc" - ); + int32_t y; + asm("vcvt.s32.f32 %0, %0, #16": "+w"(x)); + memcpy(&y, &x, sizeof(y)); return y; } inline SkFixed SkFixedMul_arm(SkFixed x, SkFixed y) |