| ; Test byteswaps between registers. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| declare i32 @llvm.bswap.i32(i32 %a) |
| declare i64 @llvm.bswap.i64(i64 %a) |
| |
| ; Check 32-bit register-to-register byteswaps. |
| define i32 @f1(i32 %a) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: lrvr [[REGISTER:%r[0-5]]], %r2 |
| ; CHECK: br %r14 |
| %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| ret i32 %swapped |
| } |
| |
| ; Check 64-bit register-to-register byteswaps. |
| define i64 @f2(i64 %a) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: lrvgr %r2, %r2 |
| ; CHECK: br %r14 |
| %swapped = call i64 @llvm.bswap.i64(i64 %a) |
| ret i64 %swapped |
| } |