test/CodeGen/Hexagon/cext-opt-negative-fi.mir

# RUN: llc -march=hexagon -run-pass hexagon-cext-opt %s -o - | FileCheck %s

# Skip fixed stack indices in hexagon-cext. The reason is that they cannot
# be stored as indices (stackSlot2Index) together with registers and
# non-fixed stack slots.

# Check that this doesn't crash.
# CHECK: L2_loadrb_io %fixed-stack.0, 1496

--- |
  target triple = "hexagon"

  %s.0 = type { %s.1, i32, i8, i8, i8, i8, i8, i64, %s.2, %s.5, i8 }
  %s.1 = type { i8, i8, i8, i8 }
  %s.2 = type { %s.3 }
  %s.3 = type { i8, i8, %s.4, i32, i8 }
  %s.4 = type { [3 x i8] }
  %s.5 = type { i32, i32, [10 x %s.6], %s.9 }
  %s.6 = type { %s.7, i8, i32, i8, %s.7 }
  %s.7 = type { %s.8 }
  %s.8 = type { i64, i64, i64, i64, i64, i64, i64, i64 }
  %s.9 = type { i8, i8 }

  ; Function Attrs: nounwind optsize
  define dso_local void @f0(%s.0* byval nocapture readonly align 8 %a0) local_unnamed_addr #0 {
  b0:
    %v0 = getelementptr inbounds %s.0, %s.0* %a0, i32 0, i32 10
    %v1 = load i8, i8* %v0, align 8
    %v2 = tail call i8* @f1(i8 signext %v1) #0
    unreachable
  }

  ; Function Attrs: nounwind optsize
  declare dso_local i8* @f1(i8 signext) local_unnamed_addr #0

  attributes #0 = { nounwind optsize "target-cpu"="hexagonv65" }

...

name: f0
tracksRegLiveness: true
fixedStack:
- { id: 0, offset: 0, size: 1504, alignment: 8, isImmutable: true, isAliased: false }
body: |
  bb.0:
    %0:intregs = L2_loadrb_io %fixed-stack.0, 1496
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit $r31, implicit $r30, implicit $r29
    $r0 = COPY %0:intregs
    PS_call_nr @f1, implicit $r0, implicit-def $r29, implicit-def $r0
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit $r29
...