https://bugs.llvm.org/show_bug.cgi?id=39666
Bug ID: 39666
Summary: Improve generic expansion of expandload and
compressstore intrinsics
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
These generic intrinsics fail without a legal lowering.
define <2 x i64> @test5(i64* %base, <2 x i64> %src0) {
%res = call <2 x i64> @llvm.masked.expandload.v2i64(i64* %base, <2 x i1> <i1
false, i1 true>, <2 x i64> %src0)
ret <2 x i64>%res
}
declare <2 x i64> @llvm.masked.expandload.v2i64(i64*, <2 x i1>, <2 x i64>)
define void @test11(i64* %base, <2 x i64> %V, <2 x i1> %mask) {
call void @llvm.masked.compressstore.v2i64(<2 x i64> %V, i64* %base, <2 x i1>
%mask)
ret void
}
declare void @llvm.masked.compressstore.v2i64(<2 x i64>, i64* , <2 x i1>)
llc -mcpu=btver2
LLVM ERROR: Cannot select: 0x557bba23b478: v2i64,ch = masked_load<(load 16 from
%ir.base)> 0x557bba1c8b68, 0x557bba23b208, 0x557bba23b6e8, 0x557bba23b2d8
0x557bba23b208: i64,ch = CopyFromReg 0x557bba1c8b68, Register:i64 %0
0x557bba23b1a0: i64 = Register %0
0x557bba23b6e8: v2i64 = bitcast 0x557bba23b680
0x557bba23b680: v16i8 = X86ISD::VSHLDQ 0x557bba23b3a8, Constant:i8<8>
0x557bba23b3a8: v16i8 = bitcast 0x557bba23b340
0x557bba23b340: v2i64 = scalar_to_vector Constant:i64<-1>
0x557bba23b888: i64 = Constant<-1>
0x557bba23b410: i8 = Constant<8>
0x557bba23b2d8: v2i64,ch = CopyFromReg 0x557bba1c8b68, Register:v2i64 %1
0x557bba23b270: v2i64 = Register %1
In function: test5
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