File: self-phi.ll

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llvm-toolchain-19 1%3A19.1.7-3
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -S -passes=infer-address-spaces %s | FileCheck %s

define amdgpu_kernel void @phi_self(ptr addrspace(1) %arg) {
; CHECK-LABEL: @phi_self(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[I:%.*]] = phi ptr addrspace(1) [ [[I]], [[LOOP]] ], [ [[ARG:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[I1:%.*]] = load i8, ptr addrspace(1) [[I]], align 1
; CHECK-NEXT:    [[I2:%.*]] = icmp eq i8 [[I1]], 0
; CHECK-NEXT:    br i1 [[I2]], label [[LOOP]], label [[RET:%.*]]
; CHECK:       ret:
; CHECK-NEXT:    ret void
;
entry:
  %cast = addrspacecast ptr addrspace(1) %arg to ptr
  br label %loop

loop:
  %i = phi ptr [%i, %loop], [%cast, %entry]
  %i1 = load i8, ptr %i, align 1
  %i2 = icmp eq i8 %i1, 0
  br i1 %i2, label %loop, label %ret

ret:
  ret void
}