https://bugs.llvm.org/show_bug.cgi?id=39877
Bug ID: 39877
Summary: [Hexagon] Cannot select:v2i16/v4i16 = any_extend
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: Hexagon
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: bcah...@codeaurora.org, kparz...@codeaurora.org,
llvm-bugs@lists.llvm.org, sgund...@codeaurora.org,
spatel+l...@rotateright.com
Created attachment 21193
--> https://bugs.llvm.org/attachment.cgi?id=21193&action=edit
ISD::EXTRACT_VECTOR_ELT SimplifyDemandedBits Support
The attached WIP patch to add SimplifyDemandedBits support for
ISD::EXTRACT_VECTOR_ELT exposes issues in Hexagon:
Failing Tests (2):
LLVM :: CodeGen/Hexagon/vect/setcc-v2i32.ll
LLVM :: CodeGen/Hexagon/vect/zext-v4i1.ll
LLVM ERROR: Cannot select: t41: v4i16 = any_extend t31
t31: v4i1 = setcc t26, t48, seteq:ch
t26: v4i16,ch = load<(load 8 from %ir.a0, align 64)> t0, t2, undef:i32
t2: i32,ch = CopyFromReg t0, Register:i32 %1
t1: i32 = Register %1
t4: i32 = undef
t48: v4i16 = bitcast Constant:i64<0>
t47: i64 = Constant<0>
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