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
6 ; This tests a function with two complex basic blocks.
7 define zeroext i1 @twocomplexblocks(
8 ; X86-LABEL: @twocomplexblocks(
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:%.*]]
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]]
24 ; X86-NEXT: [[TMP4:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[CMP3_I]], [[LAND_RHS_I]] ]
25 ; X86-NEXT: ret i1 [[TMP4]]
27 ptr nocapture readonly dereferenceable(8) %a,
28 ptr nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
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
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
48 %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]