File: shrink-instructions-illegal-fold.mir

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (23 lines) | stat: -rw-r--r-- 950 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=si-shrink-instructions --verify-machineinstrs %s -o - | FileCheck %s

# Make sure immediate folding into V_CNDMASK respects constant bus restrictions.
---

name:            shrink_cndmask_illegal_imm_folding
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0, $vgpr1
    ; CHECK-LABEL: name: shrink_cndmask_illegal_imm_folding
    ; CHECK: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
    ; CHECK: [[MOV:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 32768, implicit $exec
    ; CHECK: V_CMP_EQ_U32_e32 0, [[COPY]], implicit-def $vcc, implicit $exec
    ; CHECK: V_CNDMASK_B32_e32 [[MOV]], killed [[COPY]], implicit $vcc, implicit $exec

    %0:vgpr_32 = COPY $vgpr0
    %1:vgpr_32 = V_MOV_B32_e32 32768, implicit $exec
    V_CMP_EQ_U32_e32 0, %0:vgpr_32, implicit-def $vcc, implicit $exec
    %2:vgpr_32 = V_CNDMASK_B32_e64 0, %1:vgpr_32, 0, killed %0:vgpr_32, $vcc, implicit $exec
    S_NOP 0

...