File: branch-folder-oneinst.mir

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (29 lines) | stat: -rw-r--r-- 781 bytes parent folder | download | duplicates (23)
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
# RUN: llc -o - %s -mtriple=aarch64 -run-pass branch-folder -verify-machineinstrs | FileCheck %s
# Check that BranchFolding pass is able to hoist a common instruction into a block with a single branch instruction.
name: func
tracksRegLiveness: true
body: |
  bb.0:
    ; CHECK-LABEL: name: func
    ; CHECK-LABEL: bb.0:
    ; CHECK: $x0 = ADDXri $x0, 1, 0
    ; CHECK: CBZX $x1, %bb.2
    liveins: $x0, $x1
    CBZX $x1, %bb.2

  bb.1:
    ; CHECK-LABEL: bb.1:
    ; CHECK-NOT: $x0 = ADDXri $x0, 1, 0
    liveins: $x0
    $x0 = ADDXri $x0, 1, 0
    $x0 = ADDXri $x0, 2, 0
    RET_ReallyLR implicit $x0

  bb.2:
    ; CHECK-LABEL: bb.2:
    ; CHECK-NOT: $x0 = ADDXri $x0, 1, 0
    liveins: $x0
    $x0 = ADDXri $x0, 1, 0
    $x0 = ADDXri $x0, 3, 0
    RET_ReallyLR implicit $x0
...