# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=si-optimize-exec-masking-pre-ra,greedy -verify-machineinstrs -o - %s
# This sample can trigger a "Non-empty but used interval" assert in regalloc if
# SIOptimizeExecMaskingPreRA does not update live intervals correctly.
---
name: foo
tracksRegLiveness: true
body: |
bb.0:
%0:sreg_32 = IMPLICIT_DEF
%1:sreg_32_xm0_xexec = IMPLICIT_DEF
%2:sreg_64_xexec_xnull = IMPLICIT_DEF
%3:sgpr_32 = IMPLICIT_DEF
%4:sreg_32_xexec_hi = IMPLICIT_DEF
%5:sreg_32 = IMPLICIT_DEF
%6:sreg_32 = IMPLICIT_DEF
%7:sreg_32 = IMPLICIT_DEF
%8:sreg_32 = IMPLICIT_DEF
%9:sreg_32 = IMPLICIT_DEF
%10:sreg_32 = IMPLICIT_DEF
%11:sreg_32 = IMPLICIT_DEF
%12:sreg_64_xexec = IMPLICIT_DEF
%13:sreg_64_xexec_xnull = IMPLICIT_DEF
%14:sreg_32 = IMPLICIT_DEF
%15:sreg_32 = IMPLICIT_DEF
%16:sreg_32 = IMPLICIT_DEF
%17:sreg_32 = IMPLICIT_DEF
%18:sgpr_32 = IMPLICIT_DEF
$exec_lo = S_MOV_B32_term undef %9
S_BRANCH %bb.2
bb.1:
$exec_lo = S_XOR_B32_term $exec_lo, undef %10, implicit-def $scc
S_CBRANCH_EXECZ %bb.39, implicit $exec
S_BRANCH %bb.32
bb.2:
S_CMP_EQ_U32 %15, undef %15, implicit-def $scc
%19:sreg_32_xm0_xexec = S_CSELECT_B32 -1, 0, implicit killed undef $scc
%20:sreg_32 = IMPLICIT_DEF
$vcc_lo = COPY undef %20
S_CBRANCH_VCCNZ %bb.3, implicit $vcc
S_BRANCH %bb.3
bb.3:
$vcc_lo = S_AND_B32 $exec_lo, undef %19, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.6, implicit $vcc
S_BRANCH %bb.4
bb.4:
%21:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %19, implicit $exec
%22:sreg_32_xm0_xexec = V_CMP_NE_U32_e64 1, undef %21, implicit $exec
$vcc_lo = S_AND_B32 $exec_lo, undef %22, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.7, implicit $vcc
S_BRANCH %bb.5
bb.5:
S_BRANCH %bb.7
bb.6:
$vcc_lo = COPY %20
%18:sgpr_32 = COPY %18
S_CBRANCH_VCCNZ %bb.1, implicit killed $vcc
S_BRANCH %bb.2
bb.7:
%23:sreg_32 = S_AND_B32 undef %20, %9, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %23
S_CBRANCH_EXECZ %bb.10, implicit $exec
S_BRANCH %bb.9
bb.8:
%24:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %13, undef %21, 0, 0, implicit $exec
S_BRANCH %bb.28
bb.9:
S_BRANCH %bb.11
bb.10:
$exec_lo = S_XOR_B32_term $exec_lo, %23, implicit-def $scc
S_CBRANCH_EXECZ %bb.31, implicit $exec
S_BRANCH %bb.8
bb.11:
%25:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %2, undef %21, 0, 0, implicit $exec
$exec_lo = S_MOV_B32_term undef %23
S_CBRANCH_EXECZ %bb.12, implicit $exec
S_BRANCH %bb.14
bb.12:
$exec_lo = S_XOR_B32_term $exec_lo, undef %23, implicit-def $scc
S_CBRANCH_EXECZ %bb.15, implicit $exec
S_BRANCH %bb.13
bb.13:
$exec_lo = S_MOV_B32_term undef %23
S_CBRANCH_EXECZ %bb.15, implicit $exec
S_BRANCH %bb.15
bb.14:
%26:vgpr_32 = V_BFI_B32_e64 2147483647, %3, undef %25, implicit $exec
%27:vgpr_32 = V_CNDMASK_B32_e64 0, undef %26, 0, 2143289344, %1, implicit $exec
dead %28:vgpr_32, %29:sreg_32_xm0_xexec = V_ADD_CO_U32_e64 %12.sub0, undef %27, 0, implicit $exec
%30:vgpr_32, dead %31:sreg_32_xm0_xexec = V_ADDC_U32_e64 %12.sub1, undef %27, undef %22, 0, implicit $exec
SCRATCH_STORE_DWORD_SADDR undef %27, %4, 0, 0, implicit $exec, implicit $flat_scr
S_BRANCH %bb.12
bb.15:
%32:sreg_32 = IMPLICIT_DEF
$exec_lo = S_MOV_B32_term undef %32
S_CBRANCH_EXECZ %bb.17, implicit $exec
S_BRANCH %bb.16
bb.16:
%33:sreg_32 = S_AND_B32 undef %32, %16, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %33
S_CBRANCH_EXECZ %bb.17, implicit $exec
S_BRANCH %bb.17
bb.17:
$exec_lo = S_XOR_B32_term $exec_lo, undef %32, implicit-def $scc
S_CBRANCH_EXECZ %bb.30, implicit $exec
S_BRANCH %bb.18
bb.18:
%34:sreg_32 = IMPLICIT_DEF
%35:sreg_32 = S_AND_B32 undef %34, %17, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %35
S_CBRANCH_EXECZ %bb.20, implicit $exec
S_BRANCH %bb.19
bb.19:
dead %36:vgpr_32, $sgpr_null = V_ADD_CO_U32_e64 %14, undef %25, 0, implicit $exec
%37:sreg_32 = IMPLICIT_DEF
S_BRANCH %bb.21
bb.20:
$exec_lo = S_OR_B32 $exec_lo, %34, implicit-def $scc
S_BRANCH %bb.30
bb.21:
%38:sreg_32 = IMPLICIT_DEF
$exec_lo = S_MOV_B32_term undef %38
S_CBRANCH_EXECZ %bb.23, implicit $exec
S_BRANCH %bb.22
bb.22:
S_BRANCH %bb.24
bb.23:
S_BRANCH %bb.26
bb.24:
%39:sreg_32 = S_AND_B32 undef %38, %11, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %39
S_CBRANCH_EXECZ %bb.38, implicit $exec
S_BRANCH %bb.25
bb.25:
%40:sreg_32 = S_AND_B32 %5, $exec_lo, implicit-def dead $scc
S_BRANCH %bb.38
bb.26:
%37:sreg_32 = S_OR_B32 %38, %37, implicit-def $scc
$exec_lo = S_ANDN2_B32_term $exec_lo, undef %37, implicit-def $scc
S_CBRANCH_EXECNZ %bb.21, implicit $exec
S_BRANCH %bb.27
bb.27:
%41:sreg_32 = S_OR_B32 undef %37, %35, implicit-def $scc
$exec_lo = S_ANDN2_B32_term $exec_lo, undef %35, implicit-def $scc
S_CBRANCH_EXECNZ %bb.21, implicit $exec
S_BRANCH %bb.20
bb.28:
$vcc_lo = S_AND_B32 $exec_lo, %22, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.29, implicit $vcc
S_BRANCH %bb.29
bb.29:
$exec_lo = S_ANDN2_B32_term $exec_lo, undef %23, implicit-def $scc
S_CBRANCH_EXECNZ %bb.28, implicit $exec
S_BRANCH %bb.31
bb.30:
$exec_lo = S_OR_B32 $exec_lo, %32, implicit-def $scc
S_BRANCH %bb.10
bb.31:
%42:sreg_32_xm0_xexec = V_CMP_NE_U32_e64 undef %23, %21, implicit $exec
$vcc_lo = S_AND_B32 $exec_lo, undef %42, implicit-def dead $scc
S_CBRANCH_VCCZ %bb.6, implicit killed $vcc
bb.32:
%43:sreg_32 = S_AND_B32 %10, %8, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %43
S_CBRANCH_EXECZ %bb.37, implicit $exec
S_BRANCH %bb.33
bb.33:
%44:sreg_32 = S_AND_B32 undef %43, %0, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %44
S_CBRANCH_EXECZ %bb.37, implicit $exec
S_BRANCH %bb.34
bb.34:
%45:sreg_32 = S_AND_B32 undef %44, %6, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %45
S_CBRANCH_EXECZ %bb.37, implicit $exec
S_BRANCH %bb.35
bb.35:
%46:sreg_32 = S_AND_B32 undef %45, %7, implicit-def dead $scc
$exec_lo = S_MOV_B32_term undef %46
S_CBRANCH_EXECZ %bb.36, implicit $exec
S_BRANCH %bb.37
bb.36:
S_BRANCH %bb.37
bb.37:
dead $vcc_lo = COPY undef %47:sreg_32
S_BRANCH %bb.39
bb.38:
S_BRANCH %bb.26
bb.39:
SI_RETURN
...
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