llvm/llvm/test/tools/llvm-reduce/mir/preserve-machine-function-info-riscv.mir

# REQUIRES: riscv-registered-target
# RUN: llvm-reduce -abort-on-invalid-reduction -simplify-mir --delta-passes=instructions -mtriple=riscv64-- --test FileCheck --test-arg --check-prefix=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t 2> %t.log
# RUN: FileCheck --check-prefix=RESULT %s < %t

# CHECK-INTERESTINGNESS: ADDW

# RESULT: name: func
# RESULT: stack:
# RESULT-NEXT: - { id: 0, offset: 16, size: 16, alignment: 8 }

# RESULT: machineFunctionInfo:
# RESULT-NEXT: varArgsFrameIndex: 4
# RESULT-NEXT: varArgsSaveSize: 12

# RESULT: $x10 = ADDW %stack.0, renamable $x10
--- |
  define i32 @func(i32 %arg) {
    ret i32 undef
  }

...

# Note the frame index value changes during printing/parsing, not the
# clone.
---
name: func
tracksRegLiveness: true
machineFunctionInfo:
  varArgsFrameIndex: 4
  varArgsSaveSize: 12
stack:
  - { id: 4, offset: 16, size: 16, alignment: 8 }

body:             |
  bb.0:
    liveins: $x10

    renamable $x10 = ADDW %stack.4, renamable $x10
    renamable $x10 = ADDIW killed renamable $x10, -4
    PseudoRET implicit $x10

...