1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=mergeicmps -S | FileCheck %s --check-prefix=NOEXPANSION 3 4%"struct.std::pair" = type { i32, i32 } 5 6define zeroext i1 @opeq1( 7; NOEXPANSION-LABEL: @opeq1( 8; NOEXPANSION-NEXT: entry: 9; NOEXPANSION-NEXT: [[TMP0:%.*]] = load i32, ptr [[A:%.*]], align 4 10; NOEXPANSION-NEXT: [[TMP1:%.*]] = load i32, ptr [[B:%.*]], align 4 11; NOEXPANSION-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]] 12; NOEXPANSION-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]] 13; NOEXPANSION: land.rhs.i: 14; NOEXPANSION-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds %"struct.std::pair", ptr [[A]], i64 0, i32 1 15; NOEXPANSION-NEXT: [[TMP2:%.*]] = load i32, ptr [[SECOND_I]], align 4 16; NOEXPANSION-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds %"struct.std::pair", ptr [[B]], i64 0, i32 1 17; NOEXPANSION-NEXT: [[TMP3:%.*]] = load i32, ptr [[SECOND2_I]], align 4 18; NOEXPANSION-NEXT: [[CMP3_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]] 19; NOEXPANSION-NEXT: br label [[OPEQ1_EXIT]] 20; NOEXPANSION: opeq1.exit: 21; NOEXPANSION-NEXT: [[TMP4:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[CMP3_I]], [[LAND_RHS_I]] ] 22; NOEXPANSION-NEXT: ret i1 [[TMP4]] 23; 24 ptr nocapture readonly dereferenceable(8) %a, 25 ptr nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 { 26entry: 27 %0 = load i32, ptr %a, align 4 28 %1 = load i32, ptr %b, align 4 29 %cmp.i = icmp eq i32 %0, %1 30 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit 31 32land.rhs.i: 33 %second.i = getelementptr inbounds %"struct.std::pair", ptr %a, i64 0, i32 1 34 %2 = load i32, ptr %second.i, align 4 35 %second2.i = getelementptr inbounds %"struct.std::pair", ptr %b, i64 0, i32 1 36 %3 = load i32, ptr %second2.i, align 4 37 %cmp3.i = icmp eq i32 %2, %3 38 br label %opeq1.exit 39 40opeq1.exit: 41 %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ] 42 ret i1 %4 43} 44 45; Same as above, but the two blocks are in inverse order. 46define zeroext i1 @opeq1_inverse( 47; NOEXPANSION-LABEL: @opeq1_inverse( 48; NOEXPANSION-NEXT: entry: 49; NOEXPANSION-NEXT: [[FIRST_I:%.*]] = getelementptr inbounds %"struct.std::pair", ptr [[A:%.*]], i64 0, i32 1 50; NOEXPANSION-NEXT: [[TMP0:%.*]] = load i32, ptr [[FIRST_I]], align 4 51; NOEXPANSION-NEXT: [[FIRST1_I:%.*]] = getelementptr inbounds %"struct.std::pair", ptr [[B:%.*]], i64 0, i32 1 52; NOEXPANSION-NEXT: [[TMP1:%.*]] = load i32, ptr [[FIRST1_I]], align 4 53; NOEXPANSION-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]] 54; NOEXPANSION-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]] 55; NOEXPANSION: land.rhs.i: 56; NOEXPANSION-NEXT: [[TMP2:%.*]] = load i32, ptr [[A]], align 4 57; NOEXPANSION-NEXT: [[TMP3:%.*]] = load i32, ptr [[B]], align 4 58; NOEXPANSION-NEXT: [[CMP3_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]] 59; NOEXPANSION-NEXT: br label [[OPEQ1_EXIT]] 60; NOEXPANSION: opeq1.exit: 61; NOEXPANSION-NEXT: [[TMP4:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[CMP3_I]], [[LAND_RHS_I]] ] 62; NOEXPANSION-NEXT: ret i1 [[TMP4]] 63; 64 ptr nocapture readonly dereferenceable(8) %a, 65 ptr nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 { 66entry: 67 %first.i = getelementptr inbounds %"struct.std::pair", ptr %a, i64 0, i32 1 68 %0 = load i32, ptr %first.i, align 4 69 %first1.i = getelementptr inbounds %"struct.std::pair", ptr %b, i64 0, i32 1 70 %1 = load i32, ptr %first1.i, align 4 71 %cmp.i = icmp eq i32 %0, %1 72 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit 73 74land.rhs.i: 75 %2 = load i32, ptr %a, align 4 76 %3 = load i32, ptr %b, align 4 77 %cmp3.i = icmp eq i32 %2, %3 78 br label %opeq1.exit 79 80opeq1.exit: 81 %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ] 82 ret i1 %4 83} 84 85 86 87