File: explicit-locals.mir

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# RUN: llc -mtriple=wasm32-unknown-unknown -run-pass wasm-explicit-locals -wasm-keep-registers %s -o - | FileCheck %s

# When a drop instruction is inserted to drop a dead register operand, the
# original operand should be marked not dead anymore because it is now used by
# the new drop instruction. And the operand to the new drop instruction should
# be marked killed instead.
---
name: drop_test
liveins:
  - { reg: '$arguments' }
tracksRegLiveness: true
body: |
  bb.0:
    successors: %bb.1
    liveins: $arguments

  bb.1:
  ; predecessors: %bb.0
    ; CHECK-NOT: dead %{{[0-9]+}}
    ; CHECK: DROP_I32 killed %{{[0-9]+}}
    dead %0:i32 = CONST_I32 0, implicit-def dead $arguments, implicit $sp32, implicit $sp64
    RETURN implicit-def dead $arguments
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