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Diffstat (limited to 'llvm/docs/LangRef.rst')
| -rw-r--r-- | llvm/docs/LangRef.rst | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index f3b28029936..9a8643bef8b 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -5423,6 +5423,21 @@ is a bit. If the bit operand value is 1 vectorization is enabled. A value of !0 = !{!"llvm.loop.vectorize.enable", i1 0} !1 = !{!"llvm.loop.vectorize.enable", i1 1} +'``llvm.loop.vectorize.predicate.enable``' Metadata +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +This metadata selectively enables or disables creating predicated instructions +for the loop, which can enable folding of the scalar epilogue loop into the +main loop. The first operand is the string +``llvm.loop.vectorize.predicate.enable`` and the second operand is a bit. If +the bit operand value is 1 vectorization is enabled. A value of 0 disables +vectorization: + +.. code-block:: llvm + + !0 = !{!"llvm.loop.vectorize.predicate.enable", i1 0} + !1 = !{!"llvm.loop.vectorize.predicate.enable", i1 1} + '``llvm.loop.vectorize.width``' Metadata ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
