================
@@ -4742,6 +4742,125 @@ static __inline__ __m128d __DEFAULT_FN_ATTRS
_mm_castsi128_pd(__m128i __a) {
return (__m128d)__a;
}
+/// Compares each of the corresponding double-precision values of two
+/// 128-bit vectors of [2 x double], using the operation specified by the
+/// immediate integer operand.
+///
+/// Returns a [2 x double] vector consisting of two doubles corresponding to
+/// the two comparison results: zero if the comparison is false, and all 1's
+/// if the comparison is true.
+///
+/// \headerfile <x86intrin.h>
+///
+/// \code
+/// __m128d _mm_cmp_pd(__m128d a, __m128d b, const int c);
+/// \endcode
+///
+/// This intrinsic corresponds to the <c> VCMPPD </c> instruction.
+///
+/// \param a
+/// A 128-bit vector of [2 x double].
+/// \param b
+/// A 128-bit vector of [2 x double].
+/// \param c
+/// An immediate integer operand, with bits [4:0] specifying which
comparison
----------------
FreddyLeaf wrote:
```
$ echo "cmpsd \$8, %xmm1, %xmm0" | llvm-mc --show-encoding
cmpsd $8, %xmm1, %xmm0 # encoding:
[0xf2,0x0f,0xc2,0xc1,0x08]
$ echo "cmpsd \$0, %xmm1, %xmm0" | llvm-mc --show-encoding
cmpeqsd %xmm1, %xmm0 # encoding:
[0xf2,0x0f,0xc2,0xc1,0x00]
```
encoding won't omit higher bits for cmpsd, but maybe hardware will?
https://github.com/llvm/llvm-project/pull/67410
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
