1; RUN: llc -O3 -ppc-late-peephole=false -ppc-convert-rr-to-ri=false -o - %s | FileCheck %s 2target datalayout = "e-m:e-i64:64-n32:64" 3target triple = "powerpc64le-unknown-linux-gnu" 4 5%class1 = type { %union1 } 6%union1 = type { i64, [24 x i8] } 7%class2 = type { %class3 } 8%class3 = type { %class4 } 9%class4 = type { %class5, i64, %union.anon } 10%class5 = type { ptr } 11%union.anon = type { i64, [8 x i8] } 12 13@ext = external global %"class1", align 8 14 15; We can't select lxv for this because even though we're accessing an offset of 16; 16 from the stack slot, the stack slot is only guaranteed to be 8-byte 17; aligned. When the frame is finalized it is converted to lxv (frame-reg) + 18; (offset + 16). Because offset isn't guaranteed to be 16-byte aligned, we may 19; end up needing to translate the lxv instruction to lxvx 20; CHECK-LABEL: unaligned_slot: 21; CHECK-NOT: lxv {{[0-9]+}}, {{[-0-9]+}}({{[0-9]+}}) 22; CHECK: blr 23define void @unaligned_slot() #0 { 24 %1 = alloca %class2, align 8 25 %2 = getelementptr inbounds %class2, ptr %1, i64 0, i32 0, i32 0, i32 2 26 call void @llvm.memcpy.p0.p0.i64(ptr align 8 nonnull getelementptr inbounds (%class1, ptr @ext, i64 0, i32 0, i32 1, i64 8), ptr align 8 nonnull %2, i64 16, i1 false) #2 27 ret void 28} 29; CHECK-LABEL: aligned_slot: 30; CHECK: lxv {{[0-9]+}}, {{[-0-9]+}}({{[0-9]+}}) 31; CHECK: blr 32define void @aligned_slot() #0 { 33 %1 = alloca %class2, align 16 34 %2 = getelementptr inbounds %class2, ptr %1, i64 0, i32 0, i32 0, i32 2 35 call void @llvm.memcpy.p0.p0.i64(ptr align 8 nonnull getelementptr inbounds (%class1, ptr @ext, i64 0, i32 0, i32 1, i64 8), ptr align 8 nonnull %2, i64 16, i1 false) #2 36 ret void 37} 38 39; Function Attrs: argmemonly nounwind 40declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #1 41 42attributes #0 = { nounwind "target-cpu"="pwr9" "target-features"="+altivec,+bpermd,+crypto,+direct-move,+extdiv,+htm,+power8-vector,+power9-vector,+vsx" "unsafe-fp-math"="false" "use-soft-float"="false" } 43attributes #1 = { argmemonly nounwind } 44attributes #2 = { nounwind } 45