| Jonas Paulsson | 5612bb2 | 2018-03-13 08:36:20 +0000 | [diff] [blame] | 1 | ; Test that CodeGenPrepare respects endianness when splitting a store. |
| 2 | ; |
| 3 | ; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -force-split-store < %s | FileCheck %s |
| 4 | |
| 5 | define void @fun(i16* %Src, i16* %Dst) { |
| 6 | ; CHECK-LABEL: # %bb.0: |
| 7 | ; CHECK: lh %r0, 0(%r2) |
| 8 | ; CHECK-NEXT: stc %r0, 1(%r3) |
| 9 | ; CHECK-NEXT: srl %r0, 8 |
| 10 | ; CHECK-NEXT: stc %r0, 0(%r3) |
| 11 | ; CHECK-NEXT: br %r14 |
| 12 | %1 = load i16, i16* %Src |
| 13 | %2 = trunc i16 %1 to i8 |
| 14 | %3 = lshr i16 %1, 8 |
| 15 | %4 = trunc i16 %3 to i8 |
| 16 | %5 = zext i8 %2 to i16 |
| 17 | %6 = zext i8 %4 to i16 |
| 18 | %7 = shl nuw i16 %6, 8 |
| 19 | %8 = or i16 %7, %5 |
| 20 | store i16 %8, i16* %Dst |
| 21 | ret void |
| 22 | } |