| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s |
| |
| %S = type { i32, i32, i32, i32 } |
| |
| ; The entry block is part of the chain. It however can not be merged. We need to |
| ; make sure that the control flow is still consistent (goes through each of the |
| ; blocks). |
| |
| define zeroext i1 @opeq1( |
| ; CHECK-LABEL: @opeq1( |
| ; CHECK-NEXT: entry3: |
| ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 3 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP0]], align 4 |
| ; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4 |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]] |
| ; CHECK-NEXT: br i1 [[TMP4]], label %"land.rhs.i+land.rhs.i.2", label [[OPEQ1_EXIT:%.*]] |
| ; CHECK: "land.rhs.i+land.rhs.i.2": |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 0 |
| ; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 0 |
| ; CHECK-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP5]] to i8* |
| ; CHECK-NEXT: [[CSTR2:%.*]] = bitcast i32* [[TMP6]] to i8* |
| ; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR2]], i64 8) |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i32 [[MEMCMP]], 0 |
| ; CHECK-NEXT: br i1 [[TMP7]], label [[LAND_RHS_I_31:%.*]], label [[OPEQ1_EXIT]] |
| ; CHECK: land.rhs.i.31: |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 3 |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 3 |
| ; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]], align 4 |
| ; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP9]], align 4 |
| ; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[TMP10]], [[TMP11]] |
| ; CHECK-NEXT: br label [[OPEQ1_EXIT]] |
| ; CHECK: opeq1.exit: |
| ; CHECK-NEXT: [[TMP13:%.*]] = phi i1 [ [[TMP12]], [[LAND_RHS_I_31]] ], [ false, %"land.rhs.i+land.rhs.i.2" ], [ false, [[ENTRY3:%.*]] ] |
| ; CHECK-NEXT: ret i1 [[TMP13]] |
| ; |
| %S* nocapture readonly dereferenceable(16) %a, |
| %S* nocapture readonly dereferenceable(16) %b) local_unnamed_addr nofree nosync { |
| entry: |
| %first.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3 |
| %0 = load i32, i32* %first.i, align 4 |
| %first1.i = getelementptr inbounds %S, %S* %b, i64 0, i32 2 |
| %1 = load i32, i32* %first1.i, align 4 |
| %cmp.i = icmp eq i32 %0, %1 |
| br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit |
| |
| land.rhs.i: |
| %second.i = getelementptr inbounds %S, %S* %a, i64 0, i32 0 |
| %2 = load i32, i32* %second.i, align 4 |
| %second2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 0 |
| %3 = load i32, i32* %second2.i, align 4 |
| %cmp3.i = icmp eq i32 %2, %3 |
| br i1 %cmp3.i, label %land.rhs.i.2, label %opeq1.exit |
| |
| land.rhs.i.2: |
| %third.i = getelementptr inbounds %S, %S* %a, i64 0, i32 1 |
| %4 = load i32, i32* %third.i, align 4 |
| %third2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 1 |
| %5 = load i32, i32* %third2.i, align 4 |
| %cmp4.i = icmp eq i32 %4, %5 |
| br i1 %cmp4.i, label %land.rhs.i.3, label %opeq1.exit |
| |
| land.rhs.i.3: |
| %fourth.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3 |
| %6 = load i32, i32* %fourth.i, align 4 |
| %fourth2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 3 |
| %7 = load i32, i32* %fourth2.i, align 4 |
| %cmp5.i = icmp eq i32 %6, %7 |
| br label %opeq1.exit |
| |
| opeq1.exit: |
| %8 = phi i1 [ false, %entry ], [ false, %land.rhs.i], [ false, %land.rhs.i.2 ], [ %cmp5.i, %land.rhs.i.3 ] |
| ret i1 %8 |
| } |