xref: /llvm-project/llvm/test/CodeGen/ARM/GlobalISel/select-clz.mir (revision 7efabe5c7de46fe190638741c6ee81ae13255e38) 
1# RUN: llc -O0 -mtriple arm-- -mattr=+v6 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,ARM
2# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,THUMB
3--- |
4  define void @test_clz() { ret void }
5...
6---
7name:            test_clz
8# CHECK-LABEL: name: test_clz
9legalized:       true
10regBankSelected: true
11selected:        false
12# CHECK: selected: true
13registers:
14  - { id: 0, class: gprb }
15  - { id: 1, class: gprb }
16body:             |
17  bb.0:
18    liveins: $r0
19
20    %0(s32) = COPY $r0
21    ; ARM: [[VREGX:%[0-9]+]]:gpr = COPY $r0
22    ; THUMB: [[VREGX:%[0-9]+]]:rgpr = COPY $r0
23
24    %1(s32) = G_CTLZ %0(s32)
25    ; ARM: [[VREGR:%[0-9]+]]:gpr = CLZ [[VREGX]], 14 /* CC::al */, $noreg
26    ; THUMB: [[VREGR:%[0-9]+]]:rgpr = t2CLZ [[VREGX]], 14 /* CC::al */, $noreg
27
28    $r0 = COPY %1(s32)
29    ; CHECK: $r0 = COPY [[VREGR]]
30
31    BX_RET 14, $noreg, implicit $r0
32    ; CHECK: BX_RET 14 /* CC::al */, $noreg, implicit $r0
33...
34