<commit_before>; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s

; InstCombine should mark null-checked argument as nonnull at callsite
declare void @dummy(i32*, i32)

define void @test(i32* %a, i32 %b) {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[COND1:%.*]] = icmp eq i32* %a, null
; CHECK-NEXT:    br i1 [[COND1]], label %dead, label %not_null
; CHECK:       not_null:
; CHECK-NEXT:    [[COND2:%.*]] = icmp eq i32 %b, 0
; CHECK-NEXT:    br i1 [[COND2]], label %dead, label %not_zero
; CHECK:       not_zero:
; CHECK-NEXT:    call void @dummy(i32* nonnull %a, i32 %b)
; CHECK-NEXT:    ret void
; CHECK:       dead:
; CHECK-NEXT:    unreachable
;
entry:
  %cond1 = icmp eq i32* %a, null
  br i1 %cond1, label %dead, label %not_null
not_null:
  %cond2 = icmp eq i32 %b, 0
  br i1 %cond2, label %dead, label %not_zero
not_zero:
  call void @dummy(i32* %a, i32 %b)
  ret void
dead:
  unreachable
}

declare void @bar(i8*, i8* nonnull)
declare void @baz(i8*, i8*)

define void @deduce_nonnull_from_another_call(i8* %a, i8* %b) {
; CHECK-LABEL: @deduce_nonnull_from_another_call(
; CHECK-NEXT:    call void @bar(i8* %a, i8* %b)
; CHECK-NEXT:    call void @baz(i8* %b, i8* %b)
; CHECK-NEXT:    ret void
;
  call void @bar(i8* %a, i8* %b)
  call void @baz(i8* %b, i8* %b)
  ret void
}

<commit_msg>[InstCombine] add explanatory comment to test; NFC<commit_after>; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s

; InstCombine should mark null-checked argument as nonnull at callsite
declare void @dummy(i32*, i32)

define void @test(i32* %a, i32 %b) {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[COND1:%.*]] = icmp eq i32* %a, null
; CHECK-NEXT:    br i1 [[COND1]], label %dead, label %not_null
; CHECK:       not_null:
; CHECK-NEXT:    [[COND2:%.*]] = icmp eq i32 %b, 0
; CHECK-NEXT:    br i1 [[COND2]], label %dead, label %not_zero
; CHECK:       not_zero:
; CHECK-NEXT:    call void @dummy(i32* nonnull %a, i32 %b)
; CHECK-NEXT:    ret void
; CHECK:       dead:
; CHECK-NEXT:    unreachable
;
entry:
  %cond1 = icmp eq i32* %a, null
  br i1 %cond1, label %dead, label %not_null
not_null:
  %cond2 = icmp eq i32 %b, 0
  br i1 %cond2, label %dead, label %not_zero
not_zero:
  call void @dummy(i32* %a, i32 %b)
  ret void
dead:
  unreachable
}

; FIXME: The nonnull attribute in the 'bar' declaration could be 
; propagated to the parameters of the 'baz' callsite. 

declare void @bar(i8*, i8* nonnull)
declare void @baz(i8*, i8*)

define void @deduce_nonnull_from_another_call(i8* %a, i8* %b) {
; CHECK-LABEL: @deduce_nonnull_from_another_call(
; CHECK-NEXT:    call void @bar(i8* %a, i8* %b)
; CHECK-NEXT:    call void @baz(i8* %b, i8* %b)
; CHECK-NEXT:    ret void
;
  call void @bar(i8* %a, i8* %b)
  call void @baz(i8* %b, i8* %b)
  ret void
}


{'fraction_non_alphanumeric': 0.15134950461223096, 'fraction_numerical': 0.03553126067646054, 'mean_word_length': 3.6698564593301435, 'pattern_counts': {'":': 0, '<': 5, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '2394780', 'n_tokens_mistral': 1233, 'n_tokens_neox': 1198, 'n_words': 372}