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1# RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass si-load-store-opt -o - %s | FileCheck %s2 3# Check that SILoadStoreOptimizer honors physregs defs/uses between moved4# instructions.5#6# The following IR snippet would usually be optimized by the peephole optimizer.7# However, an equivalent situation can occur with buffer instructions as well.8 9# CHECK-LABEL: name: scc_def_and_use_no_dependency10# CHECK: DS_READ2_B3211# CHECK: S_ADD_U3212# CHECK: S_ADDC_U3213---14name: scc_def_and_use_no_dependency15machineFunctionInfo:16 isEntryFunction: true17body: |18 bb.0:19 liveins: $vgpr0, $sgpr020 21 %1:vgpr_32 = COPY $vgpr022 %10:sgpr_32 = COPY $sgpr023 24 $m0 = S_MOV_B32 -125 %2:vgpr_32 = DS_READ_B32 %1, 0, 0, implicit $m0, implicit $exec :: (load (s32))26 27 %11:sgpr_32 = S_ADD_U32 %10, 4, implicit-def $scc28 %12:sgpr_32 = S_ADDC_U32 %10, 0, implicit-def dead $scc, implicit $scc29 30 %3:vgpr_32 = DS_READ_B32 %1, 64, 0, implicit $m0, implicit $exec :: (load (s32))31 S_ENDPGM 032 33...34 35# CHECK-LABEL: name: scc_def_and_use_dependency36# CHECK: DS_READ2_B3237# CHECK: S_ADD_U3238# CHECK: S_ADDC_U3239---40name: scc_def_and_use_dependency41machineFunctionInfo:42 isEntryFunction: true43 44body: |45 bb.0:46 liveins: $vgpr0, $sgpr047 48 %1:vgpr_32 = COPY $vgpr049 %10:sgpr_32 = COPY $sgpr050 51 $m0 = S_MOV_B32 -152 %2:vgpr_32 = DS_READ_B32 %1, 0, 0, implicit $m0, implicit $exec :: (load (s32))53 %20:sreg_32_xm0 = V_READFIRSTLANE_B32 %2, implicit $exec54 55 %21:sgpr_32 = S_ADD_U32 %20, 4, implicit-def $scc56 ; The S_ADDC_U32 depends on the first DS_READ_B32 only via SCC57 %11:sgpr_32 = S_ADDC_U32 %10, 0, implicit-def dead $scc, implicit $scc58 59 %3:vgpr_32 = DS_READ_B32 %1, 64, 0, implicit $m0, implicit $exec :: (load (s32))60 S_ENDPGM 061 62...63