File: regcoalesce-prune.mir

package info (click to toggle)
llvm-toolchain-18 1%3A18.1.8-18
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,908,340 kB
  • sloc: cpp: 6,667,937; ansic: 1,440,452; asm: 883,619; python: 230,549; objc: 76,880; f90: 74,238; lisp: 35,989; pascal: 16,571; sh: 10,229; perl: 7,459; ml: 5,047; awk: 3,523; makefile: 2,987; javascript: 2,149; xml: 892; fortran: 649; cs: 573
file content (31 lines) | stat: -rw-r--r-- 925 bytes parent folder | download | duplicates (17) 
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
 
# RUN: llc -o - %s -mtriple=amdgcn-amd-amdhsa-opencl -run-pass=register-coalescer | FileCheck %s
---
# Checks for a bug where subregister liveranges were not properly pruned for
# an IMPLCITI_DEF that gets removed completely.
#
# CHECK-LABEL: name: func
# IMPLICIT_DEF should be gone without llc hitting assertion failures.
# CHECK-NOT: IMPLICIT_DEF
name: func
tracksRegLiveness: true
body: |
  bb.0:
    undef %5.sub1 = V_MOV_B32_e32 0, implicit $exec
    %6 = COPY %5
    S_CBRANCH_VCCZ %bb.2, implicit undef $vcc

  bb.1:
    %1 : sreg_32_xm0 = S_MOV_B32 0
    undef %0.sub0 : sreg_64 = COPY %1
    %0.sub1 = COPY %1
    %4 : vreg_64 = COPY killed %0
    %5 : vreg_64 = IMPLICIT_DEF
    %6 : vreg_64 = COPY killed %4

  bb.2:
    %2 : vgpr_32 = V_CVT_F32_I32_e32 killed %5.sub1, implicit $mode, implicit $exec

  bb.3:
    %3 : vgpr_32 = V_CVT_F32_I32_e32 killed %6.sub1, implicit $mode, implicit $exec
    S_ENDPGM 0
...