third_party/llvm-7.0/llvm/test/CodeGen/Hexagon/early-if-conv-lifetime.mir

# RUN: llc -march=hexagon -run-pass hexagon-early-if %s -o - | FileCheck %s

# Test that the LIFETIME_END instruction is not speculated and moved to a
# different basic block.

# CHECK: bb.1.b1:
# CHECK: LIFETIME_END
# CHECK: bb.2.b2:

--- |

  %s.0 = type { %s.1 }
  %s.1 = type { %s.2 }
  %s.2 = type { %s.3 }
  %s.3 = type { %s.4 }
  %s.4 = type { %s.5 }
  %s.5 = type { i32, i32, i8* }

  declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #0

  define hidden fastcc void @f0() {
  b0:
    %v0 = alloca %s.0, align 4
    %v1 = load i8, i8* undef, align 1
    %v2 = add i8 %v1, -102
    %v3 = icmp ult i8 %v2, 1
    br i1 %v3, label %b1, label %b2

  b1:                                               ; preds = %b0
    %v4 = bitcast %s.0* %v0 to i8*
    call void @llvm.lifetime.end.p0i8(i64 12, i8* nonnull %v4)
    br label %b2

  b2:                                               ; preds = %b1, %b0
    ret void
  }

  attributes #0 = { argmemonly nounwind }

...
---
name:            f0
alignment:       4
registers:
  - { id: 0, class: intregs, preferred-register: '' }
  - { id: 1, class: intregs, preferred-register: '' }
  - { id: 2, class: predregs, preferred-register: '' }
  - { id: 3, class: predregs, preferred-register: '' }
liveins:
frameInfo:
  maxAlignment:    4
fixedStack:
stack:
  - { id: 0, name: v0, type: default, offset: 0, size: 12, alignment: 4 }
constants:
body:             |
  bb.0.b0:
    successors: %bb.1.b1(0x40000000), %bb.2.b2(0x40000000)

    %1 = IMPLICIT_DEF
    %0 = L2_loadrb_io killed %1, 0 :: (load 1 from `i8* undef`)
    %2 = C2_cmpeqi killed %0, 102
    %3 = COPY killed %2
    J2_jumpf killed %3, %bb.2.b2, implicit-def dead $pc
    J2_jump %bb.1.b1, implicit-def dead $pc

  bb.1.b1:
    successors: %bb.2.b2(0x80000000)

    LIFETIME_END %stack.0.v0

  bb.2.b2:
    PS_jmpret $r31, implicit-def dead $pc

...