https://bugs.llvm.org/show_bug.cgi?id=38658
Bug ID: 38658
Summary: [X86] Failure to lower VSELECT on pre-SSE41 targets
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: andrea.dibia...@gmail.com, craig.top...@gmail.com,
llvm-bugs@lists.llvm.org, spatel+l...@rotateright.com
define <16 x i8> @sdiv(<16 x i8>) {
%2 = sdiv <16 x i8> %0, <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8
1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 7>
ret <16 x i8> %2
}
llc -mcpu=btver1
LLVM ERROR: Cannot select: t158: v8i16 = vselect t249, t250, t152
t249: v8i16 = X86ISD::VSRAI t153, Constant:i8<15>
Better VSELECT support in SelectionDAGLegalize::ExpandNode?
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