File: verifier-ec-subreg-liveness.mir

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# RUN: llc -mtriple amdgcn-amd-amdhsa -run-pass=liveintervals,pipeliner -verify-machineinstrs -o - %s | FileCheck %s
# REQUIRES: amdgpu-registered-target

# This test checks that the verifier doesn't crash on early clobbered subreg arguments.

---
name:            sub0
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0_vgpr1

    ; CHECK-NOT: *** Bad machine code: Inconsistent valno->def ***
    INLINEASM &"", 0 /* attdialect */,  1835019 /* regdef-ec:VGPR_32 */, def undef early-clobber %0.sub0:vreg_64, 1835018 /* regdef:VGPR_32 */, def undef %0.sub1:vreg_64
    FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %0, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
    S_ENDPGM 0

...
---
name:            sub1
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0_vgpr1

    ; CHECK-NOT: *** Bad machine code: Inconsistent valno->def ***
    INLINEASM &"", 0 /* attdialect */, 1835018 /* regdef:VGPR_32 */, def undef %0.sub0:vreg_64, 1835019 /* regdef-ec:VGPR_32 */, def undef early-clobber %0.sub1:vreg_64
    FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %0, 0, 0, implicit $exec, implicit $flat_scr :: (store (s64))
    S_ENDPGM 0

...