| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -force-streaming-compatible-sve < %s | FileCheck %s |
| |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| ; Currently there is no custom lowering for vector shuffles operating on types |
| ; bigger than NEON. However, having no support opens us up to a code generator |
| ; hang when expanding BUILD_VECTOR. Here we just validate the promblematic case |
| ; successfully exits code generation. |
| define void @hang_when_merging_stores_after_legalisation(ptr %a, <2 x i32> %b) #0 { |
| ; CHECK-LABEL: hang_when_merging_stores_after_legalisation: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: // kill: def $d0 killed $d0 def $z0 |
| ; CHECK-NEXT: mov z0.s, s0 |
| ; CHECK-NEXT: stp q0, q0, [x0] |
| ; CHECK-NEXT: ret |
| %splat = shufflevector <2 x i32> %b, <2 x i32> undef, <8 x i32> zeroinitializer |
| %interleaved.vec = shufflevector <8 x i32> %splat, <8 x i32> undef, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7> |
| store <8 x i32> %interleaved.vec, ptr %a, align 4 |
| ret void |
| } |
| |
| ; Ensure we don't crash when trying to lower a shuffle via an extract |
| define void @crash_when_lowering_extract_shuffle(ptr %dst, i1 %cond) #0 { |
| ; CHECK-LABEL: crash_when_lowering_extract_shuffle: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: ret |
| %broadcast.splat = shufflevector <32 x i1> zeroinitializer, <32 x i1> zeroinitializer, <32 x i32> zeroinitializer |
| br i1 %cond, label %exit, label %vector.body |
| |
| vector.body: |
| %1 = load <32 x i32>, ptr %dst, align 16 |
| %predphi = select <32 x i1> %broadcast.splat, <32 x i32> zeroinitializer, <32 x i32> %1 |
| store <32 x i32> %predphi, ptr %dst, align 16 |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| attributes #0 = { "target-features"="+sve" } |