1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s --check-prefix=X86 3 4%S = type { i32, i32 } 5 6; This tests a function with two complex basic blocks. 7define zeroext i1 @twocomplexblocks( 8; X86-LABEL: @twocomplexblocks( 9; X86-NEXT: entry: 10; X86-NEXT: [[TMP0:%.*]] = load i32, ptr [[A:%.*]], align 4 11; X86-NEXT: [[TMP1:%.*]] = load i32, ptr [[B:%.*]], align 4 12; X86-NEXT: [[EXTRAWORK:%.*]] = add i32 [[TMP0]], [[TMP1]] 13; X86-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]] 14; X86-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]] 15; X86: land.rhs.i: 16; X86-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds [[S:%.*]], ptr [[A]], i64 0, i32 1 17; X86-NEXT: [[TMP2:%.*]] = load i32, ptr [[SECOND_I]], align 4 18; X86-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 1 19; X86-NEXT: [[TMP3:%.*]] = load i32, ptr [[SECOND2_I]], align 4 20; X86-NEXT: [[EXTRAWORK2:%.*]] = add i32 [[TMP2]], [[TMP3]] 21; X86-NEXT: [[CMP3_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]] 22; X86-NEXT: br label [[OPEQ1_EXIT]] 23; X86: opeq1.exit: 24; X86-NEXT: [[TMP4:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[CMP3_I]], [[LAND_RHS_I]] ] 25; X86-NEXT: ret i1 [[TMP4]] 26; 27 ptr nocapture readonly dereferenceable(8) %a, 28 ptr nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 { 29entry: 30 ; This is a complex BCE Basic Block. 31 %0 = load i32, ptr %a, align 4 32 %1 = load i32, ptr %b, align 4 33 %extrawork = add i32 %0, %1 34 %cmp.i = icmp eq i32 %0, %1 35 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit 36 37land.rhs.i: 38 ; This is a complex BCE Basic Block. 39 %second.i = getelementptr inbounds %S, ptr %a, i64 0, i32 1 40 %2 = load i32, ptr %second.i, align 4 41 %second2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 1 42 %3 = load i32, ptr %second2.i, align 4 43 %extrawork2 = add i32 %2, %3 44 %cmp3.i = icmp eq i32 %2, %3 45 br label %opeq1.exit 46 47opeq1.exit: 48 %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ] 49 ret i1 %4 50} 51