File: select-clz.mir

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (33 lines) | stat: -rw-r--r-- 1,055 bytes parent folder | download | duplicates (22) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# RUN: llc -O0 -mtriple arm-- -mattr=+v6 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,ARM
# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,THUMB
--- |
  define void @test_clz() { ret void }
...
---
name:            test_clz
# CHECK-LABEL: name: test_clz
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; ARM: [[VREGX:%[0-9]+]]:gpr = COPY $r0
    ; THUMB: [[VREGX:%[0-9]+]]:rgpr = COPY $r0

    %1(s32) = G_CTLZ %0(s32)
    ; ARM: [[VREGR:%[0-9]+]]:gpr = CLZ [[VREGX]], 14 /* CC::al */, $noreg
    ; THUMB: [[VREGR:%[0-9]+]]:rgpr = t2CLZ [[VREGX]], 14 /* CC::al */, $noreg

    $r0 = COPY %1(s32)
    ; CHECK: $r0 = COPY [[VREGR]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14 /* CC::al */, $noreg, implicit $r0
...