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| author | Bob Wilson <bob.wilson@apple.com> | 2010-09-13 17:37:55 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-09-13 17:37:55 +0000 |
| commit | 5b2fb956d2a9b55abccd58acd2781dd9323abce0 (patch) | |
| tree | 3bc55879f7090a568bef051b7156d577790921ad /docs | |
| parent | 8a6e53e1162663dd2bc1da783fe2ff5947fba9e0 (diff) | |
| download | llvm-5b2fb956d2a9b55abccd58acd2781dd9323abce0.tar.gz llvm-5b2fb956d2a9b55abccd58acd2781dd9323abce0.tar.bz2 llvm-5b2fb956d2a9b55abccd58acd2781dd9323abce0.tar.xz | |
Document NEON intrinsic changes for 2.8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113757 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ReleaseNotes.html | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index 7cca0fd9a6..6972b6af38 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -446,11 +446,50 @@ it run faster:</p> <ul> -<li></li> - +<li> + All of the NEON load and store intrinsics (llvm.arm.neon.vld* and + llvm.arm.neon.vst*) take an extra parameter to specify the alignment in bytes + of the memory being accessed. +</li> +<li> + The llvm.arm.neon.vaba intrinsic (vector absolute difference and + accumulate) has been removed. This operation is now represented using + the llvm.arm.neon.vabd intrinsic (vector absolute difference) followed by a + vector add. </ul> - - +<li> + The llvm.arm.neon.vabdl and llvm.arm.neon.vabal intrinsics (lengthening + vector absolute difference with and without accumlation) have been removed. + They are represented using the llvm.arm.neon.vabd intrinsic (vector absolute + difference) followed by a vector zero-extend operation, and for vabal, + a vector add. +</li> +<li> + The llvm.arm.neon.vmovn intrinsic has been removed. Calls of this intrinsic + are now replaced by vector truncate operations. +</li> +<li> + The llvm.arm.neon.vmovls and llvm.arm.neon.vmovlu intrinsics have been + removed. They are now represented as vector sign-extend (vmovls) and + zero-extend (vmovlu) operations. +</li> +<li> + The llvm.arm.neon.vaddl*, llvm.arm.neon.vaddw*, llvm.arm.neon.vsubl*, and + llvm.arm.neon.vsubw* intrinsics (lengthening vector add and subtract) have + been removed. They are replaced by vector add and vector subtract operations + where one (vaddw, vsubw) or both (vaddl, vsubl) of the operands are either + sign-extended or zero-extended. +</li> +<li> + The llvm.arm.neon.vmulls, llvm.arm.neon.vmullu, llvm.arm.neon.vmlal*, and + llvm.arm.neon.vmlsl* intrinsics (lengthening vector multiply with and without + accumulation and subtraction) have been removed. These operations are now + represented as vector multiplications where the operands are either + sign-extended or zero-extended, followed by a vector add for vmlal or a + vector subtract for vmlsl. Note that the polynomial vector multiply + intrinsic, llvm.arm.neon.vmullp, remains unchanged. +</li> + </div> <!--=========================================================================--> |