[LLVMbugs] [Bug 3260] C++ API to shufflevector wants mask the same size as arg 1
bugzilla-daemon at cs.uiuc.edu
bugzilla-daemon at cs.uiuc.edu
Tue Dec 23 08:02:28 PST 2008
http://llvm.org/bugs/show_bug.cgi?id=3260
Nick Lewycky <nlewycky at google.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
--- Comment #1 from Nick Lewycky <nlewycky at google.com> 2008-12-23 10:02:23 ---
You're looking at the current in-CVS documentation while using LLVM 2.4.
According to llvm.org/releases/2.4/docs/LangRef.html, shufflevector is defined
as:
"Overview:
"The 'shufflevector' instruction constructs a permutation of elements from two
input vectors, returning a vector of the same type.
Arguments:
"The first two operands of a 'shufflevector' instruction are vectors with types
that match each other and types that match the result of the instruction. The
third argument is a shuffle mask, which has the same number of elements as the
other vector type, but whose element type is always 'i32'.
"The shuffle mask operand is required to be a constant vector with either
constant integer or undef values."
You can either refer to the 2.4 version of the language reference, or update to
LLVM trunk.
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