diff options
Diffstat (limited to 'llvm/test/CodeGen/AArch64/signbit-shift.ll')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/signbit-shift.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AArch64/signbit-shift.ll b/llvm/test/CodeGen/AArch64/signbit-shift.ll index 521a0b8c149..c2f62c24026 100644 --- a/llvm/test/CodeGen/AArch64/signbit-shift.ll +++ b/llvm/test/CodeGen/AArch64/signbit-shift.ll @@ -222,3 +222,26 @@ define <4 x i32> @sub_lshr_not_vec_splat(<4 x i32> %x) { ret <4 x i32> %r } +define i32 @sub_lshr(i32 %x) { +; CHECK-LABEL: sub_lshr: +; CHECK: // %bb.0: +; CHECK-NEXT: mov w8, #43 +; CHECK-NEXT: sub w0, w8, w0, lsr #31 +; CHECK-NEXT: ret + %sh = lshr i32 %x, 31 + %r = sub i32 43, %sh + ret i32 %r +} + +define <4 x i32> @sub_lshr_vec_splat(<4 x i32> %x) { +; CHECK-LABEL: sub_lshr_vec_splat: +; CHECK: // %bb.0: +; CHECK-NEXT: ushr v0.4s, v0.4s, #31 +; CHECK-NEXT: movi v1.4s, #42 +; CHECK-NEXT: sub v0.4s, v1.4s, v0.4s +; CHECK-NEXT: ret + %e = lshr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31> + %r = sub <4 x i32> <i32 42, i32 42, i32 42, i32 42>, %e + ret <4 x i32> %r +} + |
