| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -o -| FileCheck %s |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| ; This test covers a case where an AArch64 DUP instruction is generated with an |
| ; invalid encoding, resulting in a crash. We don't care about the specific output |
| ; here, only that this case no longer causes said crash. |
| define dso_local i32 @dupext_crashtest(i32 %e) local_unnamed_addr { |
| ; CHECK-LABEL: dupext_crashtest: |
| ; CHECK: // %bb.0: // %for.body.lr.ph |
| ; CHECK-NEXT: mov w8, w0 |
| ; CHECK-NEXT: dup v0.2s, w8 |
| ; CHECK-NEXT: .LBB0_1: // %vector.body |
| ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr d1, [x8] |
| ; CHECK-NEXT: smull v1.2d, v0.2s, v1.2s |
| ; CHECK-NEXT: xtn v1.2s, v1.2d |
| ; CHECK-NEXT: str d1, [x8] |
| ; CHECK-NEXT: b .LBB0_1 |
| for.body.lr.ph: |
| %conv314 = zext i32 %e to i64 |
| br label %vector.memcheck |
| |
| vector.memcheck: ; preds = %for.body.lr.ph |
| br label %vector.ph |
| |
| vector.ph: ; preds = %vector.memcheck |
| %broadcast.splatinsert = insertelement <2 x i64> poison, i64 %conv314, i32 0 |
| %broadcast.splat = shufflevector <2 x i64> %broadcast.splatinsert, <2 x i64> poison, <2 x i32> zeroinitializer |
| br label %vector.body |
| |
| vector.body: ; preds = %vector.body, %vector.ph |
| %wide.load = load <2 x i32>, <2 x i32>* undef, align 4 |
| %0 = zext <2 x i32> %wide.load to <2 x i64> |
| %1 = mul nuw <2 x i64> %broadcast.splat, %0 |
| %2 = trunc <2 x i64> %1 to <2 x i32> |
| %3 = select <2 x i1> undef, <2 x i32> undef, <2 x i32> %2 |
| %4 = bitcast i32* undef to <2 x i32>* |
| store <2 x i32> %3, <2 x i32>* %4, align 4 |
| br label %vector.body |
| } |