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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s --check-prefix=X863 4%S = type { i32, i32, i32, i32 }5 6declare void @foo(...)7 8; We can discard %entry and %land.rhs.i, but still merge the last 2 blocks.9define zeroext i1 @opeq1(10; X86-LABEL: @opeq1(11; X86-NEXT: entry:12; X86-NEXT: [[TMP0:%.*]] = load i32, ptr [[A:%.*]], align 413; X86-NEXT: [[TMP1:%.*]] = load i32, ptr [[B:%.*]], align 414; X86-NEXT: call void (...) @foo()15; X86-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]16; X86-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]]17; X86: land.rhs.i:18; X86-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds [[S:%.*]], ptr [[A]], i64 0, i32 119; X86-NEXT: [[TMP2:%.*]] = load i32, ptr [[SECOND_I]], align 420; X86-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 121; X86-NEXT: [[TMP3:%.*]] = load i32, ptr [[SECOND2_I]], align 422; X86-NEXT: call void (...) @foo()23; X86-NEXT: [[CMP2_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]24; X86-NEXT: br i1 [[CMP2_I]], label %"land.rhs.i.2+land.rhs.i.3", label [[OPEQ1_EXIT]]25; X86: "land.rhs.i.2+land.rhs.i.3":26; X86-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], ptr [[A]], i64 0, i32 227; X86-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 228; X86-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(ptr [[TMP4]], ptr [[TMP5]], i64 8)29; X86-NEXT: [[TMP6:%.*]] = icmp eq i32 [[MEMCMP]], 030; X86-NEXT: br label [[OPEQ1_EXIT]]31; X86: opeq1.exit:32; X86-NEXT: [[TMP7:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ false, [[LAND_RHS_I]] ], [ [[TMP6]], %"land.rhs.i.2+land.rhs.i.3" ]33; X86-NEXT: ret i1 [[TMP7]]34;35 ptr nocapture readonly dereferenceable(16) %a,36 ptr nocapture readonly dereferenceable(16) %b) local_unnamed_addr nofree nosync {37entry:38 %0 = load i32, ptr %a, align 439 %1 = load i32, ptr %b, align 440 ; Does other work.41 call void (...) @foo()42 %cmp.i = icmp eq i32 %0, %143 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit44 45land.rhs.i:46 %second.i = getelementptr inbounds %S, ptr %a, i64 0, i32 147 %2 = load i32, ptr %second.i, align 448 %second2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 149 %3 = load i32, ptr %second2.i, align 450 ; Does other work.51 call void (...) @foo()52 %cmp2.i = icmp eq i32 %2, %353 br i1 %cmp2.i, label %land.rhs.i.2, label %opeq1.exit54 55land.rhs.i.2:56 %third.i = getelementptr inbounds %S, ptr %a, i64 0, i32 257 %4 = load i32, ptr %third.i, align 458 %third2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 259 %5 = load i32, ptr %third2.i, align 460 %cmp3.i = icmp eq i32 %4, %561 br i1 %cmp3.i, label %land.rhs.i.3, label %opeq1.exit62 63land.rhs.i.3:64 %fourth.i = getelementptr inbounds %S, ptr %a, i64 0, i32 365 %6 = load i32, ptr %fourth.i, align 466 %fourth2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 367 %7 = load i32, ptr %fourth2.i, align 468 %cmp4.i = icmp eq i32 %6, %769 br label %opeq1.exit70 71opeq1.exit:72 %8 = phi i1 [ false, %entry ], [ false, %land.rhs.i] , [ false, %land.rhs.i.2 ], [ %cmp4.i, %land.rhs.i.3 ]73 ret i1 %874}75