http://llvm.org/bugs/show_bug.cgi?id=2472
Summary: Missing VZEXT_MOVL pattern for <4 x i32>
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
Testcase:
define <4 x i32> @a(<4 x i32> %a) {
entry:
%vecext = extractelement <4 x i32> %a, i32 0
insertelement <4 x i32> zeroinitializer, i32 %vecext, i32 0
%add = add <4 x i32> %a, %0
ret <4 x i32> %add
}
Run through llvm-as | llc, prints the following and aborts:
Cannot yet select: 0x8a470c8: v4i32 = X86ISD::VZEXT_MOVL 0x8a473d8
It looks like general patterns are also missing for v8i16 and v16i8; I'm not
completely sure if those are supposed to be legal, though.
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