<commit_before>; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
; PR5438

; TODO: This should also optimize down.
;define i32 @test1(i32 %a, i32 %b) nounwind readnone {
;entry:
;        %0 = icmp sgt i32 %a, -1
;        %1 = icmp slt i32 %b, 0
;        %2 = xor i1 %1, %0
;        %3 = zext i1 %2 to i32
;        ret i32 %3
;}

; TODO: This optimizes partially but not all the way.
;define i32 @test2(i32 %a, i32 %b) nounwind readnone {
;entry:
;        %0 = and i32 %a, 8
;        %1 = and i32 %b, 8
;        %2 = icmp eq i32 %0, %1
;        %3 = zext i1 %2 to i32
;        ret i32 %3
;}

define i32 @test3(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test3(
; CHECK-NEXT:    [[T2_UNSHIFTED:%.*]] = xor i32 %a, %b
; CHECK-NEXT:    [[T2_UNSHIFTED_LOBIT:%.*]] = lshr i32 [[T2_UNSHIFTED]], 31
; CHECK-NEXT:    [[T2_UNSHIFTED_LOBIT_NOT:%.*]] = xor i32 [[T2_UNSHIFTED_LOBIT]], 1
; CHECK-NEXT:    ret i32 [[T2_UNSHIFTED_LOBIT_NOT]]
;
  %t0 = lshr i32 %a, 31
  %t1 = lshr i32 %b, 31
  %t2 = icmp eq i32 %t0, %t1
  %t3 = zext i1 %t2 to i32
  ret i32 %t3
}

; Variation on @test3: checking the 2nd bit in a situation where the 5th bit
; is one, not zero.
define i32 @test3i(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test3i(
; CHECK-NEXT:    [[T01:%.*]] = xor i32 %a, %b
; CHECK-NEXT:    [[TMP1:%.*]] = lshr i32 [[T01]], 31
; CHECK-NEXT:    [[T4:%.*]] = xor i32 [[TMP1]], 1<commit_msg>[InstCombine] Uncomment two test cases that were commented out with a TODO about them not optimizing.<commit_after>; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
; PR5438

; TODO: This should also optimize down.
define i32 @test1(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    [[T0:%.*]] = icmp sgt i32 [[A:%.*]], -1
; CHECK-NEXT:    [[T1:%.*]] = icmp slt i32 [[B:%.*]], 0
; CHECK-NEXT:    [[T2:%.*]] = xor i1 [[T1]], [[T0]]
; CHECK-NEXT:    [[T3:%.*]] = zext i1 [[T2]] to i32
; CHECK-NEXT:    ret i32 [[T3]]
;
  %t0 = icmp sgt i32 %a, -1
  %t1 = icmp slt i32 %b, 0
  %t2 = xor i1 %t1, %t0
  %t3 = zext i1 %t2 to i32
  ret i32 %t3
}

; TODO: This optimizes partially but not all the way.
define i32 @test2(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    [[TMP1:%.*]] = xor i32 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP2:%.*]] = lshr i32 [[TMP1]], 3
; CHECK-NEXT:    [[DOTLOBIT:%.*]] = and i32 [[TMP2]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = xor i32 [[DOTLOBIT]], 1
; CHECK-NEXT:    ret i32 [[TMP3]]
;
  %t0 = and i32 %a, 8
  %t1 = and i32 %b, 8
  %t2 = icmp eq i32 %t0, %t1
  %t3 = zext i1 %t2 to i32
  ret i32 %t3
}

define i32 @test3(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test3(
; CHECK-NEXT:    [[T2_UNSHIFTED:%.*]] = xor i32 %a, %b
; CHECK-NEXT:    [[T2_UNSHIFTED_LOBIT:%.*]] = lshr i32 [[T2_UNSHIFTED]], 31
; CHECK-NEXT:    [[T2_UNSHIFTED_LOBIT_NOT:%.*]] = xor i32 [[T2_UNSHIFTED_LOBIT]], 1
; CHECK-NEXT:    ret i32 [[T2_UNSHIFTED_LOBIT_NOT]]
;
  %t0 = lshr i32 %a, 31
  %t1 = lshr i32 %b, 31
  %t2 = icmp eq i32 %t0, %t1
  %t3 = zext i1 %t2 to i32
  ret i32 %t3
}

; Variation on @test3: checking the 2nd bit in a situation where the 5th bit
; is one, not zero.
define i32 @test3i(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: @test3i(
; CHECK-NEXT:    [[T01:%.*]] = xor i32 %a, %b
; CHECK-NEXT:    [[TMP1:%.*]] = lshr i32 [[T01]], 31
; CHECK-NEXT:    [[T4:%.*]] = xor i32 [[TMP1]], 1
{'fraction_non_alphanumeric': 0.18869540393948045, 'fraction_numerical': 0.08821010562375108, 'mean_word_length': 3.0696864111498257, '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': '3424415', 'n_tokens_mistral': 1647, 'n_tokens_neox': 1567, 'n_words': 481}