llvm/test/CodeGen/X86/licm-regpressure.ll

; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
; RUN: llc < %s -mtriple=x86_64-linux -stop-after=early-machinelicm -o - | FileCheck %s

; FIXME: MachineLICM does not compute register pressure correctly and we end up
; emitting too many ADD64ri32s. More details: llvm.org/PR23143

%struct.A = type { i32, i32, i32, i32, i32, i32, i32 }

define void @test(i1 %b, ptr %a) nounwind {
  ; CHECK-LABEL: name: test
  ; CHECK: bb.0.entry:
  ; CHECK-NEXT:   successors: %bb.1(0x80000000)
  ; CHECK-NEXT:   liveins: $edi, $rsi
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:gr64 = COPY $rsi
  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:gr32 = COPY $edi
  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:gr8 = COPY [[COPY1]].sub_8bit
  ; CHECK-NEXT:   [[ADD64ri32_:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 4, implicit-def dead $eflags
  ; CHECK-NEXT:   [[ADD64ri32_1:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 8, implicit-def dead $eflags
  ; CHECK-NEXT:   [[ADD64ri32_2:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 12, implicit-def dead $eflags
  ; CHECK-NEXT:   [[ADD64ri32_3:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 16, implicit-def dead $eflags
  ; CHECK-NEXT:   [[ADD64ri32_4:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 20, implicit-def dead $eflags
  ; CHECK-NEXT:   [[ADD64ri32_5:%[0-9]+]]:gr64 = nuw ADD64ri32 [[COPY]], 24, implicit-def dead $eflags
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.1.loop-body:
  ; CHECK-NEXT:   successors: %bb.1(0x7c000000), %bb.2(0x04000000)
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[COPY]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_1]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_2]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_3]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_4]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   $rdi = COPY [[ADD64ri32_5]]
  ; CHECK-NEXT:   CALL64pcrel32 target-flags(x86-plt) @assign, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp
  ; CHECK-NEXT:   ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
  ; CHECK-NEXT:   TEST8ri [[COPY2]], 1, implicit-def $eflags
  ; CHECK-NEXT:   JCC_1 %bb.1, 5, implicit $eflags
  ; CHECK-NEXT:   JMP_1 %bb.2
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.2.loop-exit:
  ; CHECK-NEXT:   RET 0
entry:
  br label %loop-header

loop-header:
  br label %loop-body

loop-body:
  %0 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 1
  %1 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 2
  %2 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 3
  %3 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 4
  %4 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 5
  %5 = getelementptr inbounds %struct.A, ptr %a, i64 0, i32 6
  call void @assign(ptr %a)
  call void @assign(ptr %0)
  call void @assign(ptr %1)
  call void @assign(ptr %2)
  call void @assign(ptr %3)
  call void @assign(ptr %4)
  call void @assign(ptr %5)
  br i1 %b, label %loop-body, label %loop-exit

loop-exit:
  ret void
}

declare void @assign(ptr)