diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/SystemZ/codegenprepare-splitstore.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SystemZ/codegenprepare-splitstore.ll b/llvm/test/CodeGen/SystemZ/codegenprepare-splitstore.ll new file mode 100644 index 00000000000..0b1e2b477c2 --- /dev/null +++ b/llvm/test/CodeGen/SystemZ/codegenprepare-splitstore.ll @@ -0,0 +1,22 @@ +; Test that CodeGenPrepare respects endianness when splitting a store. +; +; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -force-split-store < %s | FileCheck %s + +define void @fun(i16* %Src, i16* %Dst) { +; CHECK-LABEL: # %bb.0: +; CHECK: lh %r0, 0(%r2) +; CHECK-NEXT: stc %r0, 1(%r3) +; CHECK-NEXT: srl %r0, 8 +; CHECK-NEXT: stc %r0, 0(%r3) +; CHECK-NEXT: br %r14 + %1 = load i16, i16* %Src + %2 = trunc i16 %1 to i8 + %3 = lshr i16 %1, 8 + %4 = trunc i16 %3 to i8 + %5 = zext i8 %2 to i16 + %6 = zext i8 %4 to i16 + %7 = shl nuw i16 %6, 8 + %8 = or i16 %7, %5 + store i16 %8, i16* %Dst + ret void +} |
