llvm/test/MachineVerifier/verify-regops.mir

# RUN: not --crash llc -march=x86 -o - %s -run-pass=none -verify-machineinstrs \
# RUN:   2>&1 | FileCheck %s
# REQUIRES: x86-registered-target
#
# Check that MachineVerifier catches corrupt operands where MO->isReg()
# returns true, but the descriptor says it should be an OPERAND_IMMEDIATE or
# OPERAND_PCREL. Conversely, if MO->isReg() (and MO->isFI()) returns false,
# check that not an OPERAND_REGISTER is expected.

# CHECK-LABEL: fun

# CHECK: *** Bad machine code: Expected a register operand. ***
# CHECK: - instruction: %1:gr32 = XOR32rm -1, %fixed-stack.1, 1, $noreg, 0, $noreg, implicit-def dead $eflags :: (load 4 from %fixed-stack.1, align 8)
# CHECK: - operand 1:   -1

# CHECK: *** Bad machine code: Expected a non-register operand. ***
# CHECK: - instruction: %2:gr32 = OR32ri %1:gr32(tied-def 0), %0:gr32, implicit-def dead $eflags
# CHECK: - operand 2:   %0:gr32


name:            fun
tracksRegLiveness: true
fixedStack:
  - { id: 1, offset: 8, size: 4, alignment: 8, isImmutable: true }
  - { id: 3, size: 4, alignment: 16, isImmutable: true }
body:             |
  bb.0:
    %0:gr32 = MOV32rm %fixed-stack.3, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.3, align 16)
    ; Was: %1:gr32 = XOR32rm %0, %fixed-stack.1, 1, $noreg, 0, $noreg, implicit-def dead $eflags :: (load 4 from %fixed-stack.1, align 8)
    %1:gr32 = XOR32rm -1, %fixed-stack.1, 1, $noreg, 0, $noreg, implicit-def dead $eflags :: (load 4 from %fixed-stack.1, align 8)
    ; Was: %2:gr32 = OR32ri %1, -256, implicit-def dead $eflags
    %2:gr32 = OR32ri %1, %0, implicit-def dead $eflags
    %3:gr32 = MOV32ri -1
    $eax = COPY %2
    $edx = COPY %3
    RET 0, $eax, $edx
...