1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=i686-unknown-unknown -mcpu=i686 | FileCheck %s --check-prefix=X86
3; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
4
5; Combine BSWAP (lowered to rolw 8) with a second rotate.
6; This test checks for combining rotates with inconsistent constant value types.
7
8define i16 @combine_bswap_rotate(i16 %a0) {
9; X86-LABEL: combine_bswap_rotate:
10; X86:       # %bb.0:
11; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
12; X86-NEXT:    rolw $9, %ax
13; X86-NEXT:    retl
14;
15; X64-LABEL: combine_bswap_rotate:
16; X64:       # %bb.0:
17; X64-NEXT:    movl %edi, %eax
18; X64-NEXT:    rolw $9, %ax
19; X64-NEXT:    # kill: def $ax killed $ax killed $eax
20; X64-NEXT:    retq
21  %1 = call i16 @llvm.bswap.i16(i16 %a0)
22  %2 = shl i16 %1, 1
23  %3 = lshr i16 %1, 15
24  %4 = or i16 %2, %3
25  ret i16 %4
26}
27
28declare i16 @llvm.bswap.i16(i16)
29