No need to open-code 64x64->128-bit multiplication.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/hexagon/fma_emu.c | 32 +++-----------------------------
1 file changed, 3 insertions(+), 29 deletions(-)
diff --git a/target/hexagon/fma_emu.c b/target/hexagon/fma_emu.c
index 343c40a686..6749538c09 100644
--- a/target/hexagon/fma_emu.c
+++ b/target/hexagon/fma_emu.c
@@ -82,38 +82,12 @@ int32_t float32_getexp(float32 f32)
return -1;
}
-static uint32_t int128_getw0(Int128 x)
-{
- return int128_getlo(x);
-}
-
-static uint32_t int128_getw1(Int128 x)
-{
- return int128_getlo(x) >> 32;
-}
-
static Int128 int128_mul_6464(uint64_t ai, uint64_t bi)
{
- Int128 a, b;
- uint64_t pp0, pp1a, pp1b, pp1s, pp2;
+ uint64_t l, h;
- a = int128_make64(ai);
- b = int128_make64(bi);
- pp0 = (uint64_t)int128_getw0(a) * (uint64_t)int128_getw0(b);
- pp1a = (uint64_t)int128_getw1(a) * (uint64_t)int128_getw0(b);
- pp1b = (uint64_t)int128_getw1(b) * (uint64_t)int128_getw0(a);
- pp2 = (uint64_t)int128_getw1(a) * (uint64_t)int128_getw1(b);
-
- pp1s = pp1a + pp1b;
- if ((pp1s < pp1a) || (pp1s < pp1b)) {
- pp2 += (1ULL << 32);
- }
- uint64_t ret_low = pp0 + (pp1s << 32);
- if ((ret_low < pp0) || (ret_low < (pp1s << 32))) {
- pp2 += 1;
- }
-
- return int128_make128(ret_low, pp2 + (pp1s >> 32));
+ mulu64(&l, &h, ai, bi);
+ return int128_make128(l, h);
}