|  | # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py | 
|  | # RUN: llc -mtriple=thumbv8.1m.main-none-eabi -mattr=+mve -run-pass=arm-block-placement -verify-machineinstrs %s -o - | FileCheck %s | 
|  | --- | | 
|  |  | 
|  | ; Checks that Predecessor gets moved (to before the LoopExit) if it contains a backward WLS. | 
|  | define void @backwards_branch(i32 %N, ptr nocapture %a, ptr nocapture readonly %b)   { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that Predecessor (containing a backwards WLS) does not get moved to before the loopExit if it is the entry block. | 
|  | define void @backwards_branch_entry_block(i32 %N, ptr nocapture %a, ptr nocapture readonly %b)   { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that Predecessor (to which a forward WLS exists) is not moved if moving it would cause the WLS to become backwards branching. | 
|  | define void @backwards_branch_backwards_wls(i32 %N, i32 %M, ptr nocapture %a, ptr nocapture %b, ptr nocapture %c)   { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that a MachineFunction is unaffected if it doesn't contain any WLS (pseudo) instruction. | 
|  | define void @no_predecessor(i32 %N, i32 %M, ptr nocapture %a, ptr nocapture %b, ptr nocapture %c)   { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Within a nested (Both the WLS and loopExit are at depth=3 here) loop, checks that Predecessor | 
|  | ; gets moved (in backward direction) if there exists a backdwards WLS from it to the LoopExit. | 
|  | define void @nested_loops(i32 %n, i32 %m, i32 %l, ptr noalias %X, ptr noalias %Y)   { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that Predecessor (to which a forward WLS exists) is moved if moving it would NOT cause the WLS | 
|  | ; to become backwards branching. | 
|  | define void @backwards_branch_forwards_wls(i32 %N, i32 %M, ptr nocapture %a, ptr nocapture %b, ptr nocapture %c) { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that multiple predecessor case is handled appropriately | 
|  | define void @multiple_predecessors(i32 %d, i32 %e, i32 %f) { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; Checks that blocks after jump tables work | 
|  | define void @jump_table(i32 %d, i32 %e, i32 %f) { | 
|  | entry: | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | declare dso_local i32 @g(...) | 
|  |  | 
|  | declare dso_local i32 @h(...) | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            backwards_branch | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: backwards_branch | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.2, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x7c000000), %bb.2(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.2, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.2(0x80000000) | 
|  | liveins: $r0, $r1, $r2, $lr | 
|  |  | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.1: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x80000000) | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.1, implicit-def dead $cpsr | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.3(0x7c000000), %bb.1(0x04000000) | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.3, implicit-def dead $cpsr | 
|  | t2B %bb.1, 14 /* CC::al */, $noreg | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            backwards_branch_entry_block | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: backwards_branch_entry_block | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.2(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.0, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x7c000000), %bb.1(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.1, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.2(0x80000000) | 
|  | liveins: $r0, $r1, $r2, $lr | 
|  |  | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.1: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x80000000) | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.0, implicit-def dead $cpsr | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.3(0x7c000000), %bb.1(0x04000000) | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.3, implicit-def dead $cpsr | 
|  | t2B %bb.1, 14 /* CC::al */, $noreg | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            backwards_branch_backwards_wls | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: backwards_branch_backwards_wls | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.2(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x40000000), %bb.6(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.6, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x7c000000), %bb.4(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   t2CMPri renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2Bcc %bb.1, 0 /* CC::eq */, $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r2, $r1, $r0 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2DoLoopStart renamable $r0 | 
|  | ; CHECK-NEXT:   t2B %bb.5, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.5: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x40000000), %bb.5(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.5, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.6: | 
|  | ; CHECK-NEXT:   successors: %bb.6(0x40000000), %bb.3(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.6, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.2(0x80000000) | 
|  | liveins: $r0, $r1, $r2, $lr | 
|  |  | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.1: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x80000000), %bb.5(0x80000000) | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.3, implicit-def dead $cpsr | 
|  | t2B %bb.5, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.1(0x7c000000), %bb.4(0x04000000) | 
|  | liveins: $lr, $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.1, implicit-def dead $cpsr | 
|  | t2B %bb.4, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.1, %bb.4 | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | t2B %bb.1, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.5: | 
|  | successors: %bb.5, %bb.3 | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.5, implicit-def dead $cpsr | 
|  | t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | ... | 
|  | --- | 
|  | name:            no_predecessor | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: no_predecessor | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.2(0x30000000), %bb.1(0x50000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r4, $r5, $r7, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $r5, $r7, killed $lr, implicit-def $sp, implicit $sp | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION def_cfa_offset 16 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r7, -8 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r5, -12 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r4, -16 | 
|  | ; CHECK-NEXT:   $r7 = frame-setup tADDrSPi $sp, 2, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION def_cfa $r7, 8 | 
|  | ; CHECK-NEXT:   $r4 = tMOVr killed $r0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tBL 14 /* CC::al */, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0 | 
|  | ; CHECK-NEXT:   tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2Bcc %bb.2, 0 /* CC::eq */, killed $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r4 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r0, dead $cpsr = tMOVi8 4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $r5 = t2LDRSHi12 killed renamable $r0, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   t2B %bb.4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r4 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r5, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   t2B %bb.4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r4, $r5 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $r0 = tMOVr $r5, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tBL 14 /* CC::al */, $noreg, @h, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x04000000), %bb.3(0x7c000000) | 
|  | ; CHECK-NEXT:   liveins: $r4, $r5 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r0 = tLDRi renamable $r4, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2Bcc %bb.3, 1 /* CC::ne */, killed $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.5: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $r5, def $r7, def $pc | 
|  | bb.0: | 
|  | successors: %bb.1(0x30000000), %bb.2(0x50000000) | 
|  | liveins: $r0, $r4, $r5, $r7, $lr | 
|  |  | 
|  | frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r4, killed $r5, $r7, killed $lr, implicit-def $sp, implicit $sp | 
|  | frame-setup CFI_INSTRUCTION def_cfa_offset 16 | 
|  | frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | frame-setup CFI_INSTRUCTION offset $r7, -8 | 
|  | frame-setup CFI_INSTRUCTION offset $r5, -12 | 
|  | frame-setup CFI_INSTRUCTION offset $r4, -16 | 
|  | $r7 = frame-setup tADDrSPi $sp, 2, 14 /* CC::al */, $noreg | 
|  | frame-setup CFI_INSTRUCTION def_cfa $r7, 8 | 
|  | $r4 = tMOVr killed $r0, 14 /* CC::al */, $noreg | 
|  | tBL 14 /* CC::al */, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0 | 
|  | tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2Bcc %bb.1, 0 /* CC::eq */, killed $cpsr | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x80000000) | 
|  | liveins: $r4 | 
|  |  | 
|  | renamable $r0, dead $cpsr = tMOVi8 4, 14 /* CC::al */, $noreg | 
|  | renamable $r5 = t2LDRSHi12 killed renamable $r0, 0, 14 /* CC::al */, $noreg | 
|  | t2B %bb.3, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.1: | 
|  | successors: %bb.3(0x80000000) | 
|  | liveins: $r4 | 
|  |  | 
|  | renamable $r5, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | t2B %bb.3, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.3(0x80000000) | 
|  | liveins: $r4, $r5 | 
|  |  | 
|  | $r0 = tMOVr $r5, 14 /* CC::al */, $noreg | 
|  | tBL 14 /* CC::al */, $noreg, @h, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0 | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.5(0x04000000), %bb.4(0x7c000000) | 
|  | liveins: $r4, $r5 | 
|  |  | 
|  | renamable $r0 = tLDRi renamable $r4, 0, 14 /* CC::al */, $noreg | 
|  | tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2Bcc %bb.4, 1 /* CC::ne */, killed $cpsr | 
|  |  | 
|  | bb.5: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r4, def $r5, def $r7, def $pc | 
|  | ... | 
|  | --- | 
|  | name:            nested_loops | 
|  | tracksRegLiveness: true | 
|  | liveins: | 
|  | - { reg: '$r0' } | 
|  | - { reg: '$r1' } | 
|  | - { reg: '$r2' } | 
|  | - { reg: '$r3' } | 
|  | frameInfo: | 
|  | stackSize:       32 | 
|  | maxAlignment:    4 | 
|  | maxCallFrameSize: 0 | 
|  | fixedStack: | 
|  | - { id: 0, size: 4, alignment: 8, isImmutable: true } | 
|  | stack: | 
|  | - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', | 
|  | callee-saved-restored: false } | 
|  | - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r10' } | 
|  | - { id: 2, type: spill-slot, offset: -12, size: 4, alignment: 4, callee-saved-register: '$r9' } | 
|  | - { id: 3, type: spill-slot, offset: -16, size: 4, alignment: 4, callee-saved-register: '$r8' } | 
|  | - { id: 4, type: spill-slot, offset: -20, size: 4, alignment: 4, callee-saved-register: '$r7' } | 
|  | - { id: 5, type: spill-slot, offset: -24, size: 4, alignment: 4, callee-saved-register: '$r6' } | 
|  | - { id: 6, type: spill-slot, offset: -28, size: 4, alignment: 4, callee-saved-register: '$r5' } | 
|  | - { id: 7, type: spill-slot, offset: -32, size: 4, alignment: 4, callee-saved-register: '$r4' } | 
|  | machineFunctionInfo: {} | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: nested_loops | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r6, $r7, $r8, $r9, $r10, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r4, killed $r5, killed $r6, killed $r7, killed $r8, killed $r9, killed $r10, killed $lr | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION def_cfa_offset 32 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r10, -8 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r9, -12 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r8, -16 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r7, -20 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r6, -24 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r5, -28 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r4, -32 | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   $sp = frame-destroy t2LDMIA_RET $sp, 11 /* CC::lt */, killed $cpsr, def $r4, def $r5, def $r6, def $r7, def $r8, def $r9, def $r10, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r3 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r12 = t2LDRi12 $sp, 32, 14 /* CC::al */, $noreg :: (load (s32) from %fixed-stack.0, align 8) | 
|  | ; CHECK-NEXT:   $r9 = tMOVr killed $r2, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $r8 = t2MOVi 0, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.9(0x04000000), %bb.3(0x7c000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r8 = nuw nsw t2ADDri killed renamable $r8, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   renamable $r3, dead $cpsr = tADDi8 killed renamable $r3, 1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tCMPhir renamable $r8, renamable $r0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   renamable $r12 = t2ADDri killed renamable $r12, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   t2Bcc %bb.9, 0 /* CC::eq */, killed $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x50000000), %bb.2(0x30000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r1, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2Bcc %bb.2, 11 /* CC::lt */, killed $cpsr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r4, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   $r10 = tMOVr $r12, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   $r2 = tMOVr $r3, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   t2B %bb.5, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.5: | 
|  | ; CHECK-NEXT:   successors: %bb.7(0x50000000), %bb.6(0x30000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2WhileLoopStartLR killed renamable $r9, %bb.6, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.7, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.6: | 
|  | ; CHECK-NEXT:   successors: %bb.2(0x04000000), %bb.5(0x7c000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r4, dead $cpsr = nuw nsw tADDi8 killed renamable $r4, 1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $r2, dead $cpsr = tADDi8 killed renamable $r2, 1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tCMPr renamable $r4, renamable $r1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   renamable $r10 = t2ADDri killed renamable $r10, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   t2Bcc %bb.2, 0 /* CC::eq */, killed $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.5, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.7: | 
|  | ; CHECK-NEXT:   successors: %bb.8(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $r5 = tMOVr $r10, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   $r6 = tMOVr $r2, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   t2B %bb.8, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.8: | 
|  | ; CHECK-NEXT:   successors: %bb.8(0x7c000000), %bb.6(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1, $r2, $r3, $r4, $r5, $r6, $r8, $r9, $r10, $r12 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tSTRi killed $r0, $r1, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.8, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.6, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.9: | 
|  | ; CHECK-NEXT:   $sp = frame-destroy t2LDMIA_RET $sp, 14 /* CC::al */, $noreg, def $r4, def $r5, def $r6, def $r7, def $r8, def $r9, def $r10, def $pc | 
|  | bb.0: | 
|  | successors: %bb.1 | 
|  | liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r6, $r7, $r8, $r9, $r10, $lr | 
|  |  | 
|  | $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r4, killed $r5, killed $r6, killed $r7, killed $r8, killed $r9, killed $r10, killed $lr | 
|  | frame-setup CFI_INSTRUCTION def_cfa_offset 32 | 
|  | frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | frame-setup CFI_INSTRUCTION offset $r10, -8 | 
|  | frame-setup CFI_INSTRUCTION offset $r9, -12 | 
|  | frame-setup CFI_INSTRUCTION offset $r8, -16 | 
|  | frame-setup CFI_INSTRUCTION offset $r7, -20 | 
|  | frame-setup CFI_INSTRUCTION offset $r6, -24 | 
|  | frame-setup CFI_INSTRUCTION offset $r5, -28 | 
|  | frame-setup CFI_INSTRUCTION offset $r4, -32 | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | $sp = frame-destroy t2LDMIA_RET $sp, 11 /* CC::lt */, killed $cpsr, def $r4, def $r5, def $r6, def $r7, def $r8, def $r9, def $r10, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.1: | 
|  | liveins: $r0, $r1, $r2, $r3 | 
|  |  | 
|  | renamable $r12 = t2LDRi12 $sp, 32, 14 /* CC::al */, $noreg :: (load (s32) from %fixed-stack.0, align 8) | 
|  | $r9 = tMOVr killed $r2, 14 /* CC::al */, $noreg | 
|  | renamable $r8 = t2MOVi 0, 14 /* CC::al */, $noreg, $noreg | 
|  | t2B %bb.2, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.8: | 
|  | successors: %bb.9(0x04000000), %bb.2(0x7c000000) | 
|  | liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  |  | 
|  | renamable $r8 = nuw nsw t2ADDri killed renamable $r8, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | renamable $r3, dead $cpsr = tADDi8 killed renamable $r3, 1, 14 /* CC::al */, $noreg | 
|  | tCMPhir renamable $r8, renamable $r0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | renamable $r12 = t2ADDri killed renamable $r12, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | t2Bcc %bb.9, 0 /* CC::eq */, killed $cpsr | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x50000000), %bb.8(0x30000000) | 
|  | liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  |  | 
|  | tCMPi8 renamable $r1, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2Bcc %bb.8, 11 /* CC::lt */, killed $cpsr | 
|  |  | 
|  | bb.3: | 
|  | liveins: $r0, $r1, $r3, $r8, $r9, $r12 | 
|  |  | 
|  | renamable $r4, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | $r10 = tMOVr $r12, 14 /* CC::al */, $noreg | 
|  | $r2 = tMOVr $r3, 14 /* CC::al */, $noreg | 
|  | t2B %bb.4, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.7: | 
|  | successors: %bb.8(0x04000000), %bb.4(0x7c000000) | 
|  | liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  |  | 
|  | renamable $r4, dead $cpsr = nuw nsw tADDi8 killed renamable $r4, 1, 14 /* CC::al */, $noreg | 
|  | renamable $r2, dead $cpsr = tADDi8 killed renamable $r2, 1, 14 /* CC::al */, $noreg | 
|  | tCMPr renamable $r4, renamable $r1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | renamable $r10 = t2ADDri killed renamable $r10, 1, 14 /* CC::al */, $noreg, $noreg | 
|  | t2Bcc %bb.8, 0 /* CC::eq */, killed $cpsr | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.5(0x50000000), %bb.7(0x30000000) | 
|  | liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  |  | 
|  | renamable $lr = t2WhileLoopStartLR killed renamable $r9, %bb.7, implicit-def dead $cpsr | 
|  |  | 
|  | bb.5: | 
|  | liveins: $r0, $r1, $r2, $r3, $r4, $r8, $r9, $r10, $r12 | 
|  |  | 
|  | $r5 = tMOVr $r10, 14 /* CC::al */, $noreg | 
|  | $r6 = tMOVr $r2, 14 /* CC::al */, $noreg | 
|  | t2B %bb.6, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.6: | 
|  | successors: %bb.6(0x7c000000), %bb.7(0x04000000) | 
|  | liveins: $lr, $r0, $r1, $r2, $r3, $r4, $r5, $r6, $r8, $r9, $r10, $r12 | 
|  |  | 
|  | tSTRi killed $r0, $r1, 0, 14 /* CC::al */, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.6, implicit-def dead $cpsr | 
|  | t2B %bb.7, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.9: | 
|  | $sp = frame-destroy t2LDMIA_RET $sp, 14 /* CC::al */, $noreg, def $r4, def $r5, def $r6, def $r7, def $r8, def $r9, def $r10, def $pc | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            backwards_branch_forwards_wls | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: backwards_branch_forwards_wls | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.5(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.2, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.5, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x40000000), %bb.3(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x40000000), %bb.4(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.5: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x40000000), %bb.2(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.5, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.2, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.2 | 
|  | liveins: $r0, $r1, $r2, $lr | 
|  |  | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3, %bb.5 | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.3, implicit-def dead $cpsr | 
|  | t2B %bb.5, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.1: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.4, %bb.1 | 
|  | liveins: $lr, $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.1, implicit-def dead $cpsr | 
|  | t2B %bb.4, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.1, %bb.4 | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | t2B %bb.1, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.5: | 
|  | successors: %bb.5, %bb.3 | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.5, implicit-def dead $cpsr | 
|  | t2B %bb.3, 14 /* CC::al */, $noreg | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            multiple_predecessors | 
|  | tracksRegLiveness: true | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: multiple_predecessors | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x55555555), %bb.2(0x2aaaaaab) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $r7, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION def_cfa_offset 8 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION offset $r7, -8 | 
|  | ; CHECK-NEXT:   $sp = frame-setup tSUBspi $sp, 1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   frame-setup CFI_INSTRUCTION def_cfa_offset 12 | 
|  | ; CHECK-NEXT:   tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 0, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   tCMPi8 killed renamable $r1, 8, 0 /* CC::eq */, killed $cpsr, implicit-def $cpsr, implicit killed $itstate | 
|  | ; CHECK-NEXT:   t2Bcc %bb.2, 0 /* CC::eq */, killed $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.6(0x40000000), %bb.3(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2WhileLoopStartLR killed renamable $r2, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.6, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x40000000), %bb.3(0x40000000) | 
|  | ; CHECK-NEXT:   liveins: $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $lr = t2WhileLoopStartLR renamable $r2, %bb.3, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   $sp = frame-destroy tADDspi $sp, 1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc, implicit undef $r0 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $r1 = t2ADDri $sp, 2, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   renamable $r0 = IMPLICIT_DEF | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.5: | 
|  | ; CHECK-NEXT:   successors: %bb.5(0x7c000000), %bb.1(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1, $r2, $r3 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $q0, renamable $r0 = MVE_VIWDUPu16 killed renamable $r0, renamable $r3, 1, 0, $noreg, $noreg, undef renamable $q0 | 
|  | ; CHECK-NEXT:   MVE_VSTRH16_rq undef renamable $q0, renamable $r1, killed renamable $q0, 0, $noreg, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.5, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.1, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.6: | 
|  | ; CHECK-NEXT:   successors: %bb.7(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.7: | 
|  | ; CHECK-NEXT:   successors: %bb.7(0x7c000000), %bb.3(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r0, $r1, $r3 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $q0, renamable $r0 = MVE_VIWDUPu16 killed renamable $r0, renamable $r3, 2, 0, $noreg, $noreg, undef renamable $q0 | 
|  | ; CHECK-NEXT:   MVE_VSTRH16_rq undef renamable $q0, renamable $r1, killed renamable $q0, 0, $noreg, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.7, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.3, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.7(0x80000000), %bb.1(0x40000000) | 
|  | liveins: $r0, $r1, $r2, $r7, $lr | 
|  |  | 
|  | frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp | 
|  | frame-setup CFI_INSTRUCTION def_cfa_offset 8 | 
|  | frame-setup CFI_INSTRUCTION offset $lr, -4 | 
|  | frame-setup CFI_INSTRUCTION offset $r7, -8 | 
|  | $sp = frame-setup tSUBspi $sp, 1, 14 /* CC::al */, $noreg | 
|  | frame-setup CFI_INSTRUCTION def_cfa_offset 12 | 
|  | tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 0, 8, implicit-def $itstate | 
|  | tCMPi8 killed renamable $r1, 8, 0 /* CC::eq */, killed $cpsr, implicit-def $cpsr, implicit killed $itstate | 
|  | t2Bcc %bb.1, 0 /* CC::eq */, killed $cpsr | 
|  |  | 
|  | bb.7: | 
|  | $sp = frame-destroy tADDspi $sp, 1, 14 /* CC::al */, $noreg | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc, implicit undef $r0 | 
|  |  | 
|  | bb.1: | 
|  | successors: %bb.3(0x40000000), %bb.7(0x40000000) | 
|  | liveins: $r2 | 
|  |  | 
|  | renamable $lr = t2WhileLoopStartLR renamable $r2, %bb.7, implicit-def dead $cpsr | 
|  | t2B %bb.3, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.4(0x80000000) | 
|  | liveins: $lr, $r2 | 
|  |  | 
|  | renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  | renamable $r1 = t2ADDri $sp, 2, 14 /* CC::al */, $noreg, $noreg | 
|  | renamable $r0 = IMPLICIT_DEF | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.4(0x7c000000), %bb.2(0x04000000) | 
|  | liveins: $lr, $r0, $r1, $r2, $r3 | 
|  |  | 
|  | renamable $q0, renamable $r0 = MVE_VIWDUPu16 killed renamable $r0, renamable $r3, 1, 0, $noreg, $noreg, undef renamable $q0 | 
|  | MVE_VSTRH16_rq undef renamable $q0, renamable $r1, killed renamable $q0, 0, $noreg, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | t2B %bb.2, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.5(0x40000000), %bb.7(0x40000000) | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | renamable $lr = t2WhileLoopStartLR killed renamable $r2, %bb.7, implicit-def dead $cpsr | 
|  | t2B %bb.5, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.5: | 
|  | successors: %bb.6(0x80000000) | 
|  | liveins: $lr, $r0, $r1 | 
|  |  | 
|  | renamable $r3, dead $cpsr = tMOVi8 0, 14 /* CC::al */, $noreg | 
|  |  | 
|  | bb.6: | 
|  | successors: %bb.6(0x7c000000), %bb.7(0x04000000) | 
|  | liveins: $lr, $r0, $r1, $r3 | 
|  |  | 
|  | renamable $q0, renamable $r0 = MVE_VIWDUPu16 killed renamable $r0, renamable $r3, 2, 0, $noreg, $noreg, undef renamable $q0 | 
|  | MVE_VSTRH16_rq undef renamable $q0, renamable $r1, killed renamable $q0, 0, $noreg, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.6, implicit-def dead $cpsr | 
|  | t2B %bb.7, 14 /* CC::al */, $noreg | 
|  |  | 
|  | ... | 
|  | --- | 
|  | name:            jump_table | 
|  | tracksRegLiveness: true | 
|  | jumpTable: | 
|  | kind:            inline | 
|  | entries: | 
|  | - id:              0 | 
|  | blocks:          [ '%bb.3', '%bb.1' ] | 
|  | body:             | | 
|  | ; CHECK-LABEL: name: jump_table | 
|  | ; CHECK: bb.0: | 
|  | ; CHECK-NEXT:   successors: %bb.3(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2, $lr | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | ; CHECK-NEXT:   t2IT 11, 8, implicit-def $itstate | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.1: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x80000000) | 
|  | ; CHECK-NEXT:   liveins: $r0, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   $lr = t2WhileLoopStartLR killed renamable $r0, %bb.2, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.4, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.2: | 
|  | ; CHECK-NEXT:   frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.3: | 
|  | ; CHECK-NEXT:   successors: %bb.1(0x7c000000), %bb.2(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $r0 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r5 = t2LEApcrelJT %jump-table.0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $r5 = t2ADDrs killed renamable $r5, renamable $r0, 18, 14 /* CC::al */, $noreg, $noreg | 
|  | ; CHECK-NEXT:   t2BR_JT killed renamable $r5, killed renamable $r0, %jump-table.0 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT: bb.4: | 
|  | ; CHECK-NEXT:   successors: %bb.4(0x7c000000), %bb.2(0x04000000) | 
|  | ; CHECK-NEXT:   liveins: $lr, $r1, $r2 | 
|  | ; CHECK-NEXT: {{  $}} | 
|  | ; CHECK-NEXT:   renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | ; CHECK-NEXT:   renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | ; CHECK-NEXT:   t2B %bb.2, 14 /* CC::al */, $noreg | 
|  | bb.0: | 
|  | successors: %bb.2(0x80000000) | 
|  | liveins: $r0, $r1, $r2, $lr | 
|  |  | 
|  | tCMPi8 renamable $r0, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr | 
|  | t2IT 11, 8, implicit-def $itstate | 
|  | frame-destroy tPOP_RET 11 /* CC::lt */, killed $cpsr, def $r7, def $pc, implicit killed $itstate | 
|  |  | 
|  | bb.1: | 
|  | frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc | 
|  |  | 
|  | bb.2: | 
|  | successors: %bb.3(0x7c000000), %bb.1(0x04000000) | 
|  | liveins: $r0 | 
|  |  | 
|  | renamable $r5 = t2LEApcrelJT %jump-table.0, 14 /* CC::al */, $noreg | 
|  | renamable $r5 = t2ADDrs killed renamable $r5, renamable $r0, 18, 14 /* CC::al */, $noreg, $noreg | 
|  | t2BR_JT killed renamable $r5, killed renamable $r0, %jump-table.0 | 
|  |  | 
|  | bb.3: | 
|  | successors: %bb.4(0x80000000) | 
|  | liveins: $r0, $r1, $r2 | 
|  |  | 
|  | $lr = t2WhileLoopStartLR killed renamable $r0, %bb.1, implicit-def dead $cpsr | 
|  |  | 
|  | bb.4: | 
|  | successors: %bb.4(0x7c000000), %bb.1(0x04000000) | 
|  | liveins: $lr, $r1, $r2 | 
|  |  | 
|  | renamable $r0 = tLDRi renamable $r2, 0, 14 /* CC::al */, $noreg | 
|  | tSTRi killed renamable $r0, renamable $r1, 0, 14 /* CC::al */, $noreg | 
|  | renamable $lr = t2LoopEndDec killed renamable $lr, %bb.4, implicit-def dead $cpsr | 
|  | t2B %bb.1, 14 /* CC::al */, $noreg | 
|  |  | 
|  | ... |